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• Ubuntu 12.04 / 12.10 Randomly Freezing - nVidia?

  - by Alix Axel

  My Ubuntu install frequently freezes, sometimes showing a black screen (not very common anymore - in my latest installs), some other times the mouse and keyboard just fail to move and respond (not even Ctrl + Alt + F1 works) and some other times I'm able to move the mouse with a huge delay (2-5 seconds) but I'm not able to do/click anything. I have a pretty strong feeling that this problem is related to my graphic card drivers because: after hard reset, I usually get error reports about X.org / jockey it's common for artifacts to appear during loading / shutdown / whenever, for instance: pattern filled with £ during log off ugly-colored squared pattern during boot windows that are partially moved (i.e.: only the top half) Firefox renderings that leave the bottom ~30% of the page black These artifacts appear right before the system freezes. I've installed Ubuntu 12.04 LTS and after several failed attempts to get my dual monitor setup to work properly I tried installing the new 12.10 version, hoping that this new version would have this problem solved... Unfortunatly, that was not the case, so I reverted to Ubuntu 12.04. I've tried all the drivers in the Additional Drivers application (even the experimental ones), I've also tried the nvidia-current package from the PPA repository ubuntu-x-swat/x-updates as well as the nouveau OSS driver. Nothing (except no driver at all with a 640*480 resolution) at all seems stable. Here is the info of my graphic card: alix@alix-E500:~$ lspci | grep VGA 01:00.0 VGA compatible controller: NVIDIA Corporation G86 [GeForce 8400M G] (rev a1) alix@alix-E500:~$ sudo lshw -C video [sudo] password for alix: *-display description: VGA compatible controller product: G86 [GeForce 8400M G] vendor: NVIDIA Corporation physical id: 0 bus info: pci@0000:01:00.0 version: a1 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress vga_controller bus_master cap_list rom configuration: driver=nouveau latency=0 resources: irq:16 memory:fd000000-fdffffff memory:d0000000-dfffffff memory:fa000000-fbffffff ioport:cc00(size=128) memory:fe0e0000-fe0fffff Right now, I don't even have my 22" monitor connected as I can't even get my laptop display to work properly and without freezes. I've searched, read and tried all that I could (over several fresh reinstalls) to fix the problem, but so far, no solution has proven definitive. I'm sorry I can't precise which symptom maps to each driver but I've been trying to solve this one on my own without logging what I'm doing, perhaps someone here will be able to point me to a certain-fix solution, if not I'll keep updating this question as I go along. Please let me know if any more info is needed to pinpoint the exact problem. Trying out NVIDIA accelerated graphics driver (version 173). The scrolling, minimizing / maximizing windows takes between 2 and 5 seconds to finalize. Context menus also pop up very slowly and the typing seems delayed by ~1 second. No critical issues so far. Firefox rendering of the Save Edits button is consistently messed up (random black lines in the top). Trying out NVIDIA accelerated graphics driver (version current) [Recommended]. All the delays mentioned above and the buggy rendering of the Save Edits button are gone, but I'm noticing that the whole screen flashes black for a couple of microseconds and while I was writing this test for the first time, the bottom 30% of the screen went black and I couldn't do anything (not even Ctrl + Alt + F1 would work). Had to force a hard reset. Also, the system hanged a little for a couple of seconds with the fade out of the "Restart" menu. Trying out NVIDIA accelerated graphics driver (*experimental*beta) (version experimental-304). Same symptoms as before, it crashed once while I was trying to install Chromium and again after a hard reset when I was trying to remove the driver. The bottom of the screen did not went black and I could move my mouse both times. Ctrl + Alt + F1 didn't work. The ugly-colored pattern also showed up during the second boot. Trying out NVIDIA accelerated graphics driver (*experimental*beta) (version experimental-307). The system crashed as soon as I clicked something. Had to do a fresh re-install. Trying out Nouveau: Accelerated Open Source driver for nVidia cards. Artifacts still show up during boot but other than that this one seems stable. As soon as I connected my second monitor, the responsiveness dropped a lot, animations and video are somewhat slow. I'm gonna try this solution http://askubuntu.com/a/98871/9018 later on.

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• SQLAuthority News – Random Thoughts and Random Ideas

  - by pinaldave

  There are days when I keep on wondering about SQL, and even my life overall. Today is Saturday so I decided to write about SQL Server. Just like any other mornings, I woke up at 5 and opened my blog editor. I usually do not open Twitter or Facebook when I am planning to focus on my work, as they are little distractions for me. But today I opened my Twitter account and came across a very interesting quote from a friend: ‘Can I expect you to be different today?’ Well, I think it was very powerful quote for me to read first thing on a new day. This quote froze me for a while and made me think, “Do I really want to write about an SQL Server tip, or something different?”  After a little thinking, I’ve realized that for today I would go on and write something different. I am going to write about a few of the ideas and thoughts I had yesterday. After writing all these, I realized that if I am thinking so much in a day, and if I write a blog post of my random musing of the week or month, it can be so long (and boring). Here are some of my random thoughts I’d like to share with you: When the airplane lands, why does everybody get up and try to rush out when their luggage would be coming probably 20-30 minutes later? I really do not like this question when it was asked to me: “SQL Server is not using optimal index which I just created – how can I force it?” I am not going elaborate on this statement but you are allowed to in the comment section. Why do some people wish Good Morning even when they meet us after 4 PM? Can I optimize a query so much that it gives me a result before I execute it? Is it corruption when someone does their personal household work at office? The lane where I drive is always the slowest lane. Why waste time on correcting others when there are a lot of pending improvements for ourselves? If I have to get Tattoo, which SQL Server Execution Plan symbol should I get? Why do I reach office so early that the coffee machine is yet running its daily cleaning job? Why does every laptop have a ‘Page Up’ key at different locations on the keyboard? While I like color movies, I really appreciate black and white photographs. I do not appreciate statements like, “If I receive your books in PDF, I will spread it to many people to give you much greater exposure. So would you please send them to me ASAP?” Do not tell me, “Why does the database grow back after shrinking it every day?” I suggest you use “Search this blog” for the explanation. Petrol prices are currently at INR 74. I hope the rate remains there. Let me ask you the same question which started my day today:  “Can I expect you to be different today?” Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: About Me, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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• XNA RenderTarget2D Sample

  - by Michael B. McLaughlin

  I remember being scared of render targets when I first started with XNA. They seemed like weird magic and I didn’t understand them at all. There’s nothing to be frightened of, though, and they are pretty easy to learn how to use. The first thing you need to know is that when you’re drawing in XNA, you aren’t actually drawing to the screen. Instead you’re drawing to this thing called the “back buffer”. Internally, XNA maintains two sections of graphics memory. Each one is exactly the same size as the other and has all the same properties (such as surface format, whether there’s a depth buffer and/or a stencil buffer, and so on). XNA flips between these two sections of memory every update-draw cycle. So while you are drawing to one, it’s busy drawing the other one on the screen. Then the current update-draw cycle ends, it flips, and the section you were just drawing to gets drawn to the screen while the one that was being drawn to the screen before is now the one you’ll be drawing on. This is what’s meant by “double buffering”. If you drew directly to the screen, the player would see all of those draws taking place as they happened and that would look odd and not very good at all. Those two sections of graphics memory are render targets. All a render target is, is a section of graphics memory to which things can be drawn. In addition to the two that XNA maintains automatically, you can also create and set your own using RenderTarget2D and GraphicsDevice.SetRenderTarget. Using render targets lets you do all sorts of neat post-processing effects (like bloom) to make your game look cooler. It also just lets you do things like motion blur and lets you create mirrors in 3D games. There are quite a lot of things that render targets let you do. To go along with this post, I wrote up a simple sample for how to create and use a RenderTarget2D. It’s available under the terms of the Microsoft Public License and is available for download on my website here: http://www.bobtacoindustries.com/developers/utils/RenderTarget2DSample.zip . Other than the ‘using’ statements, every line is commented in detail so that it should (hopefully) be easy to follow along with and understand. If you have any questions, leave a comment here or drop me a line on Twitter. One last note. While creating the sample I came across an interesting quirk. If you start by creating a Windows Game, and then make a copy for Windows Phone 7, the drop-down that lets you choose between drawing to a WP7 device and the WP7 emulator stays grayed-out. To resolve this, you need to right click on the Windows Phone 7 version in the Solution Explorer, and choose “Set as StartUp Project”. The bar will then become active, letting you change the target you which to deploy to. If you want another version to be the one that starts up when you press F5 to start debugging, just go and right-click on that version and choose “Set as StartUp Project” for it once you’ve set the WP7 target (device or emulator) that you want.

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• Hardware wireless switch has no effect after suspend and 13.10 upgrade

  - by blaineh

  This seems to be a fairly chronic problem, as shown by the following questions: How do I fix a "Wireless is disabled by hardware switch" error? Wireless disabled by hardware switch "Wireless disabled by hardware switch" after suspend and other hardware buttons ineffective - how can I solve this? but no good solutions have been found! Wireless works fine after a reboot, but after a suspend the hardware switch (for my laptop this is f12) has no effect on the wireless, it is just permanently off, and shows that it is with a red LED. All My rfkill list all reads: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: yes 1: hp-wifi: Wireless LAN Soft blocked: no Hard blocked: yes Any combination with rfkill <un>block wifi doesn't work, although one time first blocking then unblocking actually turned it on again. sudo lshw -C network reads: *-network DISABLED description: Wireless interface product: AR9285 Wireless Network Adapter (PCI-Express) vendor: Qualcomm Atheros physical id: 0 bus info: pci@0000:02:00.0 logical name: wlan0 version: 01 serial: 78:e4:00:65:2e:3f width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=ath9k driverversion=3.11.0-12-generic firmware=N/A ip=155.99.215.79 latency=0 link=yes multicast=yes wireless=IEEE 802.11bgn resources: irq:17 memory:90100000-9010ffff *-network DISABLED description: Ethernet interface product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:03:00.0 logical name: eth0 version: 02 serial: c8:0a:a9:89:b4:30 size: 10Mbit/s capacity: 100Mbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list rom ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half latency=0 link=no multicast=yes port=MII speed=10Mbit/s resources: irq:42 ioport:2000(size=256) memory:90010000-90010fff memory:90000000-9000ffff memory:90020000-9002ffff Also, adding a /etc/pm/sleep.d/brcm.sh file as recommended here simply prevents the laptop from suspending at all, which of course is no good. This question has an answer urging to install the original driver, but it wasn't an "accepted answer" so I'd rather not take a chance on it. Also I'll admit I'm a bit lost on that and would like help doing so with the specific information I've given. xev shows that no internal event is triggered for my wireless switch (f12), but other function keys also acting as hardware switches work fine. I would be happy to provide more information, so long as you're willing to help me find it for you! This is a very annoying bug. I have a Compaq Presario CQ62. Edit. I just tried to reload bios defaults (or something) as shown by this video. Didn't work. Edit. I tried the contents of this answer, and it didn't work. Edit. I made a pastebin of dmesg. I couldn't even begin to understand the contents. Edit. Output of lspci | grep Network: 02:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01)

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• Can't join OS X Mavericks to AD Domain

  - by watkipet

  I'm attempting to join an OS X Mavericks (10.9) client to a Windows Server 2008 Active Directory domain, however the bind fails with this error in the OS X client's system.log: Oct 24 15:03:15 host.domain.com com.apple.preferences.users.remoteservice[5547]: -[ODCAddServerSheetController handleOtherActionError: gotError: Error Domain=com.apple.OpenDirectory Code=5202 "Authentication server encountered an error while attempting the requested operation." UserInfo=0x7f9e6cb3e180 {NSLocalizedDescription=Authentication server encountered an error while attempting the requested operation., NSLocalizedFailureReason=Authentication server encountered an error while attempting the requested operation.}, Authentication server encountered an error while attempting the requested operation. I've joined (bound) Ubuntu Linux clients to the same domain with net ads join in the past with no problems (using the same administrative user). I don't have access to any server logs. Here's the GUI error (from Directory Utility) on the OS X client: Here's the GUI error (from User's and Groups) in System Preferences on the OS X client: Update After some Wiresharking I've got some more info: OS X Client - KDC (over UDP): AS_REQ (no padata) OS X Client <- KDC (over UDP): KRB5KDC_ERR_PREAUTH_REQUIRED OS X Client - KDC (over UDP): AS_REQ (this time with PA-ENC-TIMESTAMP in padata) OS X Client <- KDC (over UDP): KRB5KDC_ERR_RESPONSE_TOO_BIG OS X Client - KDC (over TCP): AS_REQ (also with PA-ENC-TIMESTAMP in padata) OS X Client <- KDC (over TCP): KDC_ERR_ETYPE_NOSUPP ...and that's it. This is what I think is going on: The OS X client sends a kerberos request. The KDC says, "You need to pre-authenticate. Try again" The OS X client tries to pre-authenticate (all this so far is over UDP) Something gets lost on our network and the KDC says, "Oops something went wrong" The OS X client switches to TCP and tries again. Over TCP, the KDC says, "You're using an encryption type I don't support" Note that in its padata records, the OS X client is always using "aes256-cts-hmac-sha1-96" as its encryption type. However, in its KDC_REQ_BODY record it lists the aes256-cts-hmac-sha1-96, aes128-cts-hmac-sha1-96, des3-cbc-sha1, and rc4-hmac encryption types. When the KDC comes back with KDC_ERR_ETYPE_NOSUPP, it uses rc4-hmac as its encryption type in its padata record. I know next to nothing about Kerberos, but it seems to me that the OS X client should go ahead and try the rc4-hmac encryption type. However, it does nothing after this. Update 2 Here's the debug log from Directory Services on the OS X client. Sorry--it's long. 2013-10-25 14:19:13.219128 PDT - 10544.20463 - ODNodeCustomCall request, NodeID: 52A65FAE-4B24-455D-86EC-2199A780D234, Code: 80 2013-10-25 14:19:13.220409 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - client requested OU - 'CN=Computers,DC=domain,DC=com' 2013-10-25 14:19:13.220427 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - Binding using '[email protected]' for kerberos ID 2013-10-25 14:19:13.220571 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - new kerberos credential cache 'MEMORY:0x7fa713635470' for '[email protected]' 2013-10-25 14:19:13.220623 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_get_init_creds: loop 1 2013-10-25 14:19:13.220639 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - KDC send 0 patypes 2013-10-25 14:19:13.220653 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - fast disabled, not doing any fast wrapping 2013-10-25 14:19:13.220699 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - Trying to find service kdc for realm DOMAIN.COM flags 0 2013-10-25 14:19:13.221275 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - submissing new requests to new host 2013-10-25 14:19:13.221326 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - connecting to host: udp 192.168.0.1:kerberos (192.168.0.1) tid: 00000001 2013-10-25 14:19:13.221373 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - writing packet: udp 192.168.0.1:kerberos (192.168.0.1) tid: 00000001 2013-10-25 14:19:13.222588 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - reading packet: udp 192.168.0.1:kerberos (192.168.0.1) tid: 00000001 2013-10-25 14:19:13.222617 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - host completed: udp 192.168.0.1:kerberos (192.168.0.1) tid: 00000001 2013-10-25 14:19:13.222665 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_sendto_context DOMAIN.COM done: 0 hosts 1 packets 1 wc: 0.001960 nr: 0.000000 kh: 0.000560 tid: 00000001 2013-10-25 14:19:13.222705 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_get_init_creds: loop 2 2013-10-25 14:19:13.222737 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_get_init_creds: processing input 2013-10-25 14:19:13.222752 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_get_init_creds: got an KRB-ERROR from KDC 2013-10-25 14:19:13.222775 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_get_init_creds: KRB-ERROR -1765328359/Additional pre-authentication required 2013-10-25 14:19:13.222791 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - KDC send 4 patypes 2013-10-25 14:19:13.222800 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - KDC send PA-DATA type: 19 2013-10-25 14:19:13.222808 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - KDC send PA-DATA type: 2 2013-10-25 14:19:13.222816 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - KDC send PA-DATA type: 16 2013-10-25 14:19:13.222825 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - KDC send PA-DATA type: 15 2013-10-25 14:19:13.222840 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_get_init_creds: using ENC-TS with enctype 18 2013-10-25 14:19:13.222850 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_get_init_creds: using default_s2k_func 2013-10-25 14:19:13.227443 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - fast disabled, not doing any fast wrapping 2013-10-25 14:19:13.227502 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - Trying to find service kdc for realm DOMAIN.COM flags 0 2013-10-25 14:19:13.228233 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - submissing new requests to new host 2013-10-25 14:19:13.228320 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - connecting to host: udp 192.168.0.1:kerberos (192.168.0.1) tid: 00010001 2013-10-25 14:19:13.228374 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - writing packet: udp 192.168.0.1:kerberos (192.168.0.1) tid: 00010001 2013-10-25 14:19:13.229930 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - reading packet: udp 192.168.0.1:kerberos (192.168.0.1) tid: 00010001 2013-10-25 14:19:13.229957 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - host completed: udp 192.168.0.1:kerberos (192.168.0.1) tid: 00010001 2013-10-25 14:19:13.229975 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_sendto trying over again (reset): 0 2013-10-25 14:19:13.230023 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - Trying to find service kdc for realm DOMAIN.COM flags 2 2013-10-25 14:19:13.230664 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - submissing new requests to new host 2013-10-25 14:19:13.230726 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - connecting to host: tcp 192.168.0.1:kerberos (192.168.0.1) tid: 00010002 2013-10-25 14:19:13.230818 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - connecting to 11: tcp 192.168.0.1:kerberos (192.168.0.1) tid: 00010002 2013-10-25 14:19:13.231101 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - writing packet: tcp 192.168.0.1:kerberos (192.168.0.1) tid: 00010002 2013-10-25 14:19:13.232743 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - reading packet: tcp 192.168.0.1:kerberos (192.168.0.1) tid: 00010002 2013-10-25 14:19:13.232777 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - host completed: tcp 192.168.0.1:kerberos (192.168.0.1) tid: 00010002 2013-10-25 14:19:13.232798 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_sendto_context DOMAIN.COM done: 0 hosts 2 packets 2 wc: 0.005316 nr: 0.000000 kh: 0.001339 tid: 00010002 2013-10-25 14:19:13.232856 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_get_init_creds: loop 3 2013-10-25 14:19:13.232868 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_get_init_creds: processing input 2013-10-25 14:19:13.232900 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_get_init_creds: using keyproc 2013-10-25 14:19:13.232910 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_get_init_creds: using default_s2k_func 2013-10-25 14:19:13.236487 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_get_init_creds: extracting ticket 2013-10-25 14:19:13.236557 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_get_init_creds: wc: 0.015944 2013-10-25 14:19:13.237022 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - Trying to find service kdc for realm DOMAIN.COM flags 2 2013-10-25 14:19:13.237444 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - submissing new requests to new host 2013-10-25 14:19:13.237482 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - connecting to host: tcp 192.168.0.1:kerberos (192.168.0.1) tid: 00020001 2013-10-25 14:19:13.237551 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - connecting to 11: tcp 192.168.0.1:kerberos (192.168.0.1) tid: 00020001 2013-10-25 14:19:13.237900 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - writing packet: tcp 192.168.0.1:kerberos (192.168.0.1) tid: 00020001 2013-10-25 14:19:13.238616 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - reading packet: tcp 192.168.0.1:kerberos (192.168.0.1) tid: 00020001 2013-10-25 14:19:13.238645 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - host completed: tcp 192.168.0.1:kerberos (192.168.0.1) tid: 00020001 2013-10-25 14:19:13.238674 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_sendto_context DOMAIN.COM done: 0 hosts 1 packets 1 wc: 0.001656 nr: 0.000000 kh: 0.000409 tid: 00020001 2013-10-25 14:19:13.238839 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - Trying to find service kdc for realm DOMAIN.COM flags 2 2013-10-25 14:19:13.239302 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - submissing new requests to new host 2013-10-25 14:19:13.239360 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - connecting to host: tcp 192.168.0.1:kerberos (192.168.0.1) tid: 00030001 2013-10-25 14:19:13.239429 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - connecting to 11: tcp 192.168.0.1:kerberos (192.168.0.1) tid: 00030001 2013-10-25 14:19:13.239683 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - writing packet: tcp 192.168.0.1:kerberos (192.168.0.1) tid: 00030001 2013-10-25 14:19:13.240350 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - reading packet: tcp 192.168.0.1:kerberos (192.168.0.1) tid: 00030001 2013-10-25 14:19:13.240387 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - host completed: tcp 192.168.0.1:kerberos (192.168.0.1) tid: 00030001 2013-10-25 14:19:13.240415 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_sendto_context DOMAIN.COM done: 0 hosts 1 packets 1 wc: 0.001578 nr: 0.000000 kh: 0.000445 tid: 00030001 2013-10-25 14:19:13.240514 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - krb5_credential - krb5_get_credentials_with_flags: DOMAIN.COM wc: 0.003615 2013-10-25 14:19:13.240537 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - valid credentials for [email protected] 2013-10-25 14:19:13.240541 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - switching to cache 'MEMORY:0x7fa713635470' 2013-10-25 14:19:13.240545 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - switching GSS to cache 'MEMORY:0x7fa713635470 2013-10-25 14:19:13.240555 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - Bind Step 5 - Bind/Join computer to domain - 'domain.com' 2013-10-25 14:19:13.241345 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - resolving 'server.domain.com' 2013-10-25 14:19:13.241646 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - added socket 12 for host 'server.domain.com:389' address '192.168.0.2' to kqueue list 2013-10-25 14:19:13.241930 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - Setting kerberos server for 'Kerberos:DOMAIN.COM' to 'server.domain.com' 2013-10-25 14:19:13.241962 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - switching to cache 'MEMORY:0x7fa713635470' 2013-10-25 14:19:13.241969 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - switching GSS to cache 'MEMORY:0x7fa713635470 2013-10-25 14:19:13.242231 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - GSSAPI allow Confidentiality 2013-10-25 14:19:13.242234 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - setting realm 'DOMAIN.COM' for node '/Active Directory/domain.com' 2013-10-25 14:19:13.242239 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - GSSAPI allow Integrity (signing) 2013-10-25 14:19:13.242274 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - GSSAPI using hostname 'server.domain.com' 2013-10-25 14:19:13.242282 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - GSSAPI using initiator credential '[email protected]' 2013-10-25 14:19:13.250771 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - Authenticate to LDAP using Kerberos credential - 0 2013-10-25 14:19:13.250784 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - verified connectivity to '192.168.0.2' with socket 12 2013-10-25 14:19:13.251513 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - locating site using domain domain.com using CLDAP 2013-10-25 14:19:13.252145 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - using site of 'DOMAINGROUP' from CLDAP 2013-10-25 14:19:13.253626 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - resolving 'server2.domain.com' 2013-10-25 14:19:13.253933 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - added socket 13 for host 'server2.domain.com:389' address '192.168.0.1' to kqueue list 2013-10-25 14:19:13.254428 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - Setting kerberos server for 'Kerberos:DOMAIN.COM' to 'server2.domain.com' 2013-10-25 14:19:13.254462 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - switching to cache 'MEMORY:0x7fa713635470' 2013-10-25 14:19:13.254468 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - switching GSS to cache 'MEMORY:0x7fa713635470 2013-10-25 14:19:13.254617 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - setting realm 'DOMAIN.COM' for node '/Active Directory/domain.com' 2013-10-25 14:19:13.254661 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - GSSAPI allow Confidentiality 2013-10-25 14:19:13.254670 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - GSSAPI allow Integrity (signing) 2013-10-25 14:19:13.254689 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - GSSAPI using hostname 'server2.domain.com' 2013-10-25 14:19:13.254695 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - GSSAPI using initiator credential '[email protected]' 2013-10-25 14:19:13.262092 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - Authenticate to LDAP using Kerberos credential - 0 2013-10-25 14:19:13.262108 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - verified connectivity to '192.168.0.1' with socket 13 2013-10-25 14:19:13.262982 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - Computer account either already exists or DC is already Read/Write 2013-10-25 14:19:13.264968 PDT - 10544.20463, Node: /Active Directory, Module: ActiveDirectory - Adding record 'cn=spike,CN=Computers,DC=domain,DC=com' in 'domain.com' The failure point seems to be Computer account either already exists or DC is already Read/Write, however, I can search for 'spike' on the Active Directory server using Active Directory Explorer and it's not there. If I do the same search for the Linux and Windows PCs I added previously, I can find them.

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• Exception converting Office files to PDF using ABCpdf.NET onWindows Server 2008

  - by drivendevelopment

  Has anyone delt with this exception from ABCpdf? We're running on Server 2008 and only have issues converting Office files (Word and Excel). This all worked well on Server 2003. Because we're only having issues with Office files I wonder if it's related to the XPS support on Server 2008? The code that calls into this function is running as a Windows Service. Private Overloads Function ConvertMicrosoftOfficeDocToPdf(ByVal inputFile As Byte(), ByVal fileExt As String) As Byte() Dim abcDoc As WebSupergoo.ABCpdf7.Doc = Nothing Try abcDoc = New WebSupergoo.ABCpdf7.Doc() Dim xro As New WebSupergoo.ABCpdf7.XReadOptions() xro.FileExtension = fileExt Try abcDoc.Read(inputFile, xro) Catch ex As Exception System.Diagnostics.Trace.Write(ex.ToString()) Throw ex End Try Dim fileBytes As Byte() = abcDoc.GetData() Return fileBytes Finally If Not abcDoc Is Nothing Then abcDoc.Clear() abcDoc.Dispose() End If End Try End Function WebSupergoo.ABCpdf7.Internal.PDFException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. --- System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at WebSupergoo.ABCpdf7.Internal.NDoc._InvokeMethod(IntPtr inDoc, Int32 inMethod, Int32 inIndex, Int32 inFlags, String inParams, String& outErr) at WebSupergoo.ABCpdf7.Internal.NDoc.InvokeMethod(IntPtr inDoc, Int32 inMethod, Int32 inIndex, Int32 inFlags, String inParams, String& outErr) at WebSupergoo.ABCpdf7.Doc.PrintToXps(String inputFile, String outputFile, Int32 timeout, String printerName) at WebSupergoo.ABCpdf7.Operations.XpsImportOperation.ImportAny(Doc doc, String path, Int32 timeout) at WebSupergoo.ABCpdf7.XReadOptions.ImportXpsAny(Doc doc, String path, Boolean clear) at WebSupergoo.ABCpdf7.XReadOptions.Read(Doc doc, Byte[] data, ReadModuleType module) at WebSupergoo.ABCpdf7.XReadOptions.Read(Doc doc, Byte[] data)

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• App using MonoTouch Core Graphics mysteriously crashes

  - by Stephen Ashley

  My app launches with a view controller and a simple view consisting of a button and a subview. When the user touches the button, the subview is populated with scrollviews that display the column headers, row headers, and cells of a spreadsheet. To draw the cells, I use CGBitmapContext to draw the cells, generate an image, and then put the image into the imageview contained in the scrollview that displays the cells. When I run the app on the iPad, it displays the cells just fine, and the scrollview lets the user scroll around in the spreadsheet without any problems. If the user touches the button a second time, the spreadsheet redraws and continues to work perfectly, If, however, the user touches the button a third time, the app crashes. There is no exception information display in the Application Output window. My first thought was that the successive button pushes were using up all the available memory, so I overrode the DidReceiveMemoryWarning method in the view controller and used a breakpoint to confirm that this method was not getting called. My next thought was that the CGBitmapContext was not getting released and looked for a Monotouch equivalent of Objective C's CGContextRelease() function. The closest I could find was the CGBitmapContext instance method Dispose(), which I called, without solving the problem. In order to free up as much memory as possible (in case I was somehow running out of memory without tripping a warning), I tried forcing garbage collection each time I finished using a CGBitmapContext. This made the problem worse. Now the program would crash moments after displaying the spreadsheet the first time. This caused me to wonder whether the Garbage Collector was somehow collecting something necessary to the continued display of graphics on the screen. I would be grateful for any suggestions on further avenues to investigate for the cause of these crashes. I have included the source code for the SpreadsheetView class. The relevant method is DrawSpreadsheet(), which is called when the button is touched. Thank you for your assistance on this matter. Stephen Ashley public class SpreadsheetView : UIView { public ISpreadsheetMessenger spreadsheetMessenger = null; public UIScrollView cellsScrollView = null; public UIImageView cellsImageView = null; public SpreadsheetView(RectangleF frame) : base() { Frame = frame; BackgroundColor = Constants.backgroundBlack; AutosizesSubviews = true; } public void DrawSpreadsheet() { UInt16 RowHeaderWidth = spreadsheetMessenger.RowHeaderWidth; UInt16 RowHeaderHeight = spreadsheetMessenger.RowHeaderHeight; UInt16 RowCount = spreadsheetMessenger.RowCount; UInt16 ColumnHeaderWidth = spreadsheetMessenger.ColumnHeaderWidth; UInt16 ColumnHeaderHeight = spreadsheetMessenger.ColumnHeaderHeight; UInt16 ColumnCount = spreadsheetMessenger.ColumnCount; // Add the corner UIImageView cornerView = new UIImageView(new RectangleF(0f, 0f, RowHeaderWidth, ColumnHeaderHeight)); cornerView.BackgroundColor = Constants.headingColor; CGColorSpace cornerColorSpace = null; CGBitmapContext cornerContext = null; IntPtr buffer = Marshal.AllocHGlobal(RowHeaderWidth * ColumnHeaderHeight * 4); if (buffer == IntPtr.Zero) throw new OutOfMemoryException("Out of memory."); try { cornerColorSpace = CGColorSpace.CreateDeviceRGB(); cornerContext = new CGBitmapContext (buffer, RowHeaderWidth, ColumnHeaderHeight, 8, 4 * RowHeaderWidth, cornerColorSpace, CGImageAlphaInfo.PremultipliedFirst); cornerContext.SetFillColorWithColor(Constants.headingColor.CGColor); cornerContext.FillRect(new RectangleF(0f, 0f, RowHeaderWidth, ColumnHeaderHeight)); cornerView.Image = UIImage.FromImage(cornerContext.ToImage()); } finally { Marshal.FreeHGlobal(buffer); if (cornerContext != null) { cornerContext.Dispose(); cornerContext = null; } if (cornerColorSpace != null) { cornerColorSpace.Dispose(); cornerColorSpace = null; } } cornerView.Image = DrawBottomRightCorner(cornerView.Image); AddSubview(cornerView); // Add the cellsScrollView cellsScrollView = new UIScrollView (new RectangleF(RowHeaderWidth, ColumnHeaderHeight, Frame.Width - RowHeaderWidth, Frame.Height - ColumnHeaderHeight)); cellsScrollView.ContentSize = new SizeF (ColumnCount * ColumnHeaderWidth, RowCount * RowHeaderHeight); Size iContentSize = new Size((int)cellsScrollView.ContentSize.Width, (int)cellsScrollView.ContentSize.Height); cellsScrollView.BackgroundColor = UIColor.Black; AddSubview(cellsScrollView); CGColorSpace colorSpace = null; CGBitmapContext context = null; CGGradient gradient = null; UIImage image = null; int bytesPerRow = 4 * iContentSize.Width; int byteCount = bytesPerRow * iContentSize.Height; buffer = Marshal.AllocHGlobal(byteCount); if (buffer == IntPtr.Zero) throw new OutOfMemoryException("Out of memory."); try { colorSpace = CGColorSpace.CreateDeviceRGB(); context = new CGBitmapContext (buffer, iContentSize.Width, iContentSize.Height, 8, 4 * iContentSize.Width, colorSpace, CGImageAlphaInfo.PremultipliedFirst); float[] components = new float[] {.75f, .75f, .75f, 1f, .25f, .25f, .25f, 1f}; float[] locations = new float[]{0f, 1f}; gradient = new CGGradient(colorSpace, components, locations); PointF startPoint = new PointF(0f, (float)iContentSize.Height); PointF endPoint = new PointF((float)iContentSize.Width, 0f); context.DrawLinearGradient(gradient, startPoint, endPoint, 0); context.SetLineWidth(Constants.lineWidth); context.BeginPath(); for (UInt16 i = 1; i <= RowCount; i++) { context.MoveTo (0f, iContentSize.Height - i * RowHeaderHeight + (Constants.lineWidth/2)); context.AddLineToPoint((float)iContentSize.Width, iContentSize.Height - i * RowHeaderHeight + (Constants.lineWidth/2)); } for (UInt16 j = 1; j <= ColumnCount; j++) { context.MoveTo((float)j * ColumnHeaderWidth - Constants.lineWidth/2, (float)iContentSize.Height); context.AddLineToPoint((float)j * ColumnHeaderWidth - Constants.lineWidth/2, 0f); } context.StrokePath(); image = UIImage.FromImage(context.ToImage()); } finally { Marshal.FreeHGlobal(buffer); if (gradient != null) { gradient.Dispose(); gradient = null; } if (context != null) { context.Dispose(); context = null; } if (colorSpace != null) { colorSpace.Dispose(); colorSpace = null; } // GC.Collect(); //GC.WaitForPendingFinalizers(); } UIImage finalImage = ActivateCell(1, 1, image); finalImage = ActivateCell(0, 0, finalImage); cellsImageView = new UIImageView(finalImage); cellsImageView.Frame = new RectangleF(0f, 0f, iContentSize.Width, iContentSize.Height); cellsScrollView.AddSubview(cellsImageView); } private UIImage ActivateCell(UInt16 column, UInt16 row, UIImage backgroundImage) { UInt16 ColumnHeaderWidth = (UInt16)spreadsheetMessenger.ColumnHeaderWidth; UInt16 RowHeaderHeight = (UInt16)spreadsheetMessenger.RowHeaderHeight; CGColorSpace cellColorSpace = null; CGBitmapContext cellContext = null; UIImage cellImage = null; IntPtr buffer = Marshal.AllocHGlobal(4 * ColumnHeaderWidth * RowHeaderHeight); if (buffer == IntPtr.Zero) throw new OutOfMemoryException("Out of memory: ActivateCell()"); try { cellColorSpace = CGColorSpace.CreateDeviceRGB(); // Create a bitmap the size of a cell cellContext = new CGBitmapContext (buffer, ColumnHeaderWidth, RowHeaderHeight, 8, 4 * ColumnHeaderWidth, cellColorSpace, CGImageAlphaInfo.PremultipliedFirst); // Paint it white cellContext.SetFillColorWithColor(UIColor.White.CGColor); cellContext.FillRect(new RectangleF(0f, 0f, ColumnHeaderWidth, RowHeaderHeight)); // Convert it to an image cellImage = UIImage.FromImage(cellContext.ToImage()); } finally { Marshal.FreeHGlobal(buffer); if (cellContext != null) { cellContext.Dispose(); cellContext = null; } if (cellColorSpace != null) { cellColorSpace.Dispose(); cellColorSpace = null; } // GC.Collect(); //GC.WaitForPendingFinalizers(); } // Draw the border on the cell image cellImage = DrawBottomRightCorner(cellImage); CGColorSpace colorSpace = null; CGBitmapContext context = null; Size iContentSize = new Size((int)backgroundImage.Size.Width, (int)backgroundImage.Size.Height); buffer = Marshal.AllocHGlobal(4 * iContentSize.Width * iContentSize.Height); if (buffer == IntPtr.Zero) throw new OutOfMemoryException("Out of memory: ActivateCell()."); try { colorSpace = CGColorSpace.CreateDeviceRGB(); // Set up a bitmap context the size of the whole grid context = new CGBitmapContext (buffer, iContentSize.Width, iContentSize.Height, 8, 4 * iContentSize.Width, colorSpace, CGImageAlphaInfo.PremultipliedFirst); // Draw the original grid into the bitmap context.DrawImage(new RectangleF(0f, 0f, iContentSize.Width, iContentSize.Height), backgroundImage.CGImage); // Draw the cell image into the bitmap context.DrawImage(new RectangleF(column * ColumnHeaderWidth, iContentSize.Height - (row + 1) * RowHeaderHeight, ColumnHeaderWidth, RowHeaderHeight), cellImage.CGImage); // Convert the bitmap back to an image backgroundImage = UIImage.FromImage(context.ToImage()); } finally { Marshal.FreeHGlobal(buffer); if (context != null) { context.Dispose(); context = null; } if (colorSpace != null) { colorSpace.Dispose(); colorSpace = null; } // GC.Collect(); //GC.WaitForPendingFinalizers(); } return backgroundImage; } private UIImage DrawBottomRightCorner(UIImage image) { int width = (int)image.Size.Width; int height = (int)image.Size.Height; float lineWidth = Constants.lineWidth; CGColorSpace colorSpace = null; CGBitmapContext context = null; UIImage returnImage = null; IntPtr buffer = Marshal.AllocHGlobal(4 * width * height); if (buffer == IntPtr.Zero) throw new OutOfMemoryException("Out of memory: DrawBottomRightCorner()."); try { colorSpace = CGColorSpace.CreateDeviceRGB(); context = new CGBitmapContext (buffer, width, height, 8, 4 * width, colorSpace, CGImageAlphaInfo.PremultipliedFirst); context.DrawImage(new RectangleF(0f, 0f, width, height), image.CGImage); context.BeginPath(); context.MoveTo(0f, (int)(lineWidth/2f)); context.AddLineToPoint(width - (int)(lineWidth/2f), (int)(lineWidth/2f)); context.AddLineToPoint(width - (int)(lineWidth/2f), height); context.SetLineWidth(Constants.lineWidth); context.SetStrokeColorWithColor(UIColor.Black.CGColor); context.StrokePath(); returnImage = UIImage.FromImage(context.ToImage()); } finally { Marshal.FreeHGlobal(buffer); if (context != null){ context.Dispose(); context = null;} if (colorSpace != null){ colorSpace.Dispose(); colorSpace = null;} // GC.Collect(); //GC.WaitForPendingFinalizers(); } return returnImage; } }

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• Images in the project NOT adding to array - don't know why.

  - by Sam Jarman

  Hi there, I have to sets of images. Each set has 16 images. One set is called 0.png through to 15.png the other is a0.png through to a15.png. In my app, it loads each one dependent on a variable (which by logging, I have proved it works) here is the code [MemoryManager sharedMemoryManager]; NSLog(@"THEME: %@", [MemoryManager sharedMemoryManager].themeName); imageArray = [[NSMutableArray alloc] init]; if([MemoryManager sharedMemoryManager].themeName == @"hand"){ NSLog(@"Here 2"); [imageArray addObject:[UIImage imageNamed:@"0.png"]]; // [imageArray addObject:[UIImage imageNamed:@"1.png"]];//1 [imageArray addObject:[UIImage imageNamed:@"2.png"]];//2 [imageArray addObject:[UIImage imageNamed:@"3.png"]];//3 [imageArray addObject:[UIImage imageNamed:@"4.png"]];//4 [imageArray addObject:[UIImage imageNamed:@"5.png"]];//5 [imageArray addObject:[UIImage imageNamed:@"6.png"]];//6 [imageArray addObject:[UIImage imageNamed:@"7.png"]];//7 [imageArray addObject:[UIImage imageNamed:@"8.png"]];//8 [imageArray addObject:[UIImage imageNamed:@"9.png"]];//9 [imageArray addObject:[UIImage imageNamed:@"10.png"]];//10 [imageArray addObject:[UIImage imageNamed:@"11.png"]];//11 [imageArray addObject:[UIImage imageNamed:@"12.png"]];//12 [imageArray addObject:[UIImage imageNamed:@"13.png"]];//13 [imageArray addObject:[UIImage imageNamed:@"14.png"]];//14 [imageArray addObject:[UIImage imageNamed:@"15.png"]];//15 } if([MemoryManager sharedMemoryManager].themeName == @"letters"){ NSLog(@"Here 3"); //[imageArray removeAllObjects]; [imageArray addObject:[UIImage imageNamed:@"a0.png"]]; // [imageArray addObject:[UIImage imageNamed:@"a1.png"]];//1 [imageArray addObject:[UIImage imageNamed:@"a2.png"]];//2 [imageArray addObject:[UIImage imageNamed:@"a3.png"]];//3 [imageArray addObject:[UIImage imageNamed:@"a4.png"]];//4 [imageArray addObject:[UIImage imageNamed:@"a5.png"]];//5 [imageArray addObject:[UIImage imageNamed:@"a6.png"]];//6 [imageArray addObject:[UIImage imageNamed:@"a7.png"]];//7 [imageArray addObject:[UIImage imageNamed:@"a8.png"]];//8 [imageArray addObject:[UIImage imageNamed:@"a9.png"]];//9 [imageArray addObject:[UIImage imageNamed:@"a10.png"]];//10 [imageArray addObject:[UIImage imageNamed:@"a11.png"]];//11 [imageArray addObject:[UIImage imageNamed:@"a12.png"]];//12 [imageArray addObject:[UIImage imageNamed:@"a13.png"]];//13 [imageArray addObject:[UIImage imageNamed:@"a14.png"]];//14 [imageArray addObject:[UIImage imageNamed:@"a15.png"]];//15 NSLog(@"Here 4"); } The log says 2010-05-26 21:30:57.092 Memory[22155:207] Here 1 2010-05-26 21:30:57.093 Memory[22155:207] THEME: letters 2010-05-26 21:30:57.095 Memory[22155:207] Here 3 2010-05-26 21:30:57.109 Memory[22155:207] Here 4 The images are in the same folder the .xproj file is. They simply is just not working. Any ideas? Cheers

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• Rails - difference between config.cache_store and config.action_controller.cache_store?

  - by gsmendoza

  If I set this in my environment config.action_controller.cache_store = :mem_cache_store ActionController::Base.cache_store will use a memcached store but Rails.cache will use a memory store instead: $ ./script/console >> ActionController::Base.cache_store => #<ActiveSupport::Cache::MemCacheStore:0xb6eb4bbc @data=<MemCache: 1 servers, ns: nil, ro: false>> >> Rails.cache => #<ActiveSupport::Cache::MemoryStore:0xb78b5e54 @data={}> In my app, I use Rails.cache.fetch(key){ object } to cache objects inside my helpers. All this time, I assumed that Rails.cache uses the memcached store so I'm surprised that it uses memory store. If I change the cache_store setting in my environment to config.cache_store = :mem_cache_store both ActionController::Base.cache_store and Rails.cache will now use the same memory store, which is what I expect: $ ./script/console >> ActionController::Base.cache_store => #<ActiveSupport::Cache::MemCacheStore:0xb7b8e928 @data=<MemCache: 1 servers, ns: nil, ro: false>, @middleware=#<Class:0xb7b73d44>, @thread_local_key=:active_support_cache_mem_cache_store_local_cache> >> Rails.cache => #<ActiveSupport::Cache::MemCacheStore:0xb7b8e928 @data=<MemCache: 1 servers, ns: nil, ro: false>, @middleware=#<Class:0xb7b73d44>, @thread_local_key=:active_support_cache_mem_cache_store_local_cache> However, when I run the app, I get a "marshal dump" error in the line where I call Rails.cache.fetch(key){ object } no marshal_dump is defined for class Proc Extracted source (around line #1): 1: Rails.cache.fetch(fragment_cache_key(...), :expires_in => 15.minutes) { ... } vendor/gems/memcache-client-1.8.1/lib/memcache.rb:359:in 'dump' vendor/gems/memcache-client-1.8.1/lib/memcache.rb:359:in 'set_without_newrelic_trace' What gives? Is Rails.cache meant to be a memory store? Should I call controller.cache_store.fetch in the places where I call Rails.cache.fetch?

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• Scalable / Parallel Large Graph Analysis Library?

  - by Joel Hoff

  I am looking for good recommendations for scalable and/or parallel large graph analysis libraries in various languages. The problems I am working on involve significant computational analysis of graphs/networks with 1-100 million nodes and 10 million to 1+ billion edges. The largest SMP computer I am using has 256 GB memory, but I also have access to an HPC cluster with 1000 cores, 2 TB aggregate memory, and MPI for communication. I am primarily looking for scalable, high-performance graph libraries that could be used in either single or multi-threaded scenarios, but parallel analysis libraries based on MPI or a similar protocol for communication and/or distributed memory are also of interest for high-end problems. Target programming languages include C++, C, Java, and Python. My research to-date has come up with the following possible solutions for these languages: C++ -- The most viable solutions appear to be the Boost Graph Library and Parallel Boost Graph Library. I have looked briefly at MTGL, but it is currently slanted more toward massively multithreaded hardware architectures like the Cray XMT. C - igraph and SNAP (Small-world Network Analysis and Partitioning); latter uses OpenMP for parallelism on SMP systems. Java - I have found no parallel libraries here yet, but JGraphT and perhaps JUNG are leading contenders in the non-parallel space. Python - igraph and NetworkX look like the most solid options, though neither is parallel. There used to be Python bindings for BGL, but these are now unsupported; last release in 2005 looks stale now. Other topics here on SO that I've looked at have discussed graph libraries in C++, Java, Python, and other languages. However, none of these topics focused significantly on scalability. Does anyone have recommendations they can offer based on experience with any of the above or other library packages when applied to large graph analysis problems? Performance, scalability, and code stability/maturity are my primary concerns. Most of the specialized algorithms will be developed by my team with the exception of any graph-oriented parallel communication or distributed memory frameworks (where the graph state is distributed across a cluster).

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• android compile error: could not reserve enough space for object heap

  - by moonlightcheese

  I'm getting this error during compilation: Error occurred during initialization of VM Could not create the Java virtual machine. Could not reserve enough space for object heap What's worse, the error occurs intermittently. Sometimes it happens, sometimes it doesn't. It seems to be dependent on the amount of code in the application. If I get rid of some variables or drop some imported libraries, it will compile. Then when I add more to it, I get the error again. I've included the following sources into the application in the [project_root]/src/ directory: org.apache.httpclient (I've stripped all references to log4j from the sources, so don't need it) org.apache.codec (as a dependency) org.apache.httpcore (dependency of httpclient) and my own activity code consisting of nothing more than an instance of HttpClient. I know this has something to do with the amount of memory necessary during compile time or some compiler options, and I'm not really stressing my system while i'm coding. I've got 2GB of memory on this Core Duo laptop and windows reports only 860MB page file usage (haven't used any other memory tools. I should have plenty of memory and processing power for this... and I'm only compiling some common http libs... total of 406 source files. What gives? Android API Level: 5 Android SDK rel 5 JDK version: 1.6.0_12

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• C# PInvoke VerQueryValue returns back OutOfMemoryException?

  - by Bopha

  Hi, Below is the code sample which I got from online resource but it's suppose to work with fullframework, but when I try to build it using C# smart device, it throws exception saying it's out of memory. Does anybody know how can I fix it to use on compact? the out of memory exception when I make the second call to VerQueryValue which is the last one. thanks, [DllImport("coredll.dll")] public static extern bool VerQueryValue(byte[] buffer, string subblock, out IntPtr blockbuffer, out uint len); [DllImport("coredll.dll")] public static extern bool VerQueryValue(byte[] pBlock, string pSubBlock, out string pValue, out uint len); // private static void GetAssemblyVersion() { string filename = @"\Windows\MyLibrary.dll"; if (File.Exists(filename)) { try { int handle = 0; Int32 size = 0; size = GetFileVersionInfoSize(filename, out handle); if (size > 0) { bool retValue; byte[] buffer = new byte[size]; retValue = GetFileVersionInfo(filename, handle, size, buffer); if (retValue == true) { bool success = false; IntPtr blockbuffer = IntPtr.Zero; uint len = 0; //success = VerQueryValue(buffer, "\\", out blockbuffer, out len); success = VerQueryValue(buffer, @"\VarFileInfo\Translation", out blockbuffer, out len); if(success) { int p = (int)blockbuffer; //Reads a 16-bit signed integer from unmanaged memory int j = Marshal.ReadInt16((IntPtr)p); p += 2; //Reads a 16-bit signed integer from unmanaged memory int k = Marshal.ReadInt16((IntPtr)p); string sb = string.Format("{0:X4}{1:X4}", j, k); string spv = @"\StringFileInfo\" + sb + @"\ProductVersion"; string versionInfo; VerQueryValue(buffer, spv, out versionInfo, out len); } } } } catch (Exception err) { string error = err.Message; } } }

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• How to read a database record with a DataReader and add it to a DataTable

  - by Olga

  Hello I have some data in a Oracle database table(around 4 million records) which i want to transform and store in a MSSQL database using ADO.NET. So far i used (for much smaller tables) a DataAdapter to read the data out of the Oracle DataBase and add the DataTable to a DataSet for further processing. When i tried this with my huge table, there was a outofmemory exception thrown. ( I assume this is because i cannot load the whole table into my memory) :) Now i am looking for a good way to perform this extract/transfer/load, without storing the whole table in the memory. I would like to use a DataReader and read the single dataRecords in a DataTable. If there are about 100k rows in it, I would like to process them and clear the DataTable afterwards(to have free memory again). Now i would like to know how to add a single datarecord as a row to a dataTable with ado.net and how to completly clear the dataTable out of memory: My code so far: Dim dt As New DataTable Dim count As Int32 count = 0 ' reads data records from oracle database table' While rdr.Read() 'read n records and add them to a dataTable' While count < 10000 dt.Rows.Add(????) count = count + 1 End While 'transform data in the dataTable, and insert it to the destination' ' flush the dataTable after insertion' count = 0 End While Thank you very much for your response!

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• How best to use XPath with very large XML files in .NET?

  - by glenatron

  I need to do some processing on fairly large XML files ( large here being potentially upwards of a gigabyte ) in C# including performing some complex xpath queries. The problem I have is that the standard way I would normally do this through the System.XML libraries likes to load the whole file into memory before it does anything with it, which can cause memory problems with files of this size. I don't need to be updating the files at all just reading them and querying the data contained in them. Some of the XPath queries are quite involved and go across several levels of parent-child type relationship - I'm not sure whether this will affect the ability to use a stream reader rather than loading the data into memory as a block. One way I can see of making it work is to perform the simple analysis using a stream-based approach and perhaps wrapping the XPath statements into XSLT transformations that I could run across the files afterward, although it seems a little convoluted. Alternately I know that there are some elements that the XPath queries will not run across, so I guess I could break the document up into a series of smaller fragments based on it's original tree structure, which could perhaps be small enough to process in memory without causing too much havoc. I've tried to explain my objective here so if I'm barking up totally the wrong tree in terms of general approach I'm sure you folks can set me right...

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• image analysis and 64bit OS

  - by picciopiccio

  I developed a C# application that makes use of Congex vision library (VPro). My application is developed with Visual Studio 2008 Pro on a 32bit Windows PC with 3GB of RAM. During the startup of application I see that a large amount of memory is allocated. So far so good, but when I add many and many vision elaboration the memory allocation increases and a part of application (only Cognex OCX) stops working well. The rest of application stills to work (working threads, com on socket....) I did whatever I could to save memory, but when the memory allocated is about 700MB I begin to have the problems. A note on the documentation of Cognex library tells that /LARGEADDRESSWARE is not supported. Anyway I'm thinking to try the migration of my app on win64 but what do I have to do? Can I simply use a processor with 64bit and windows 64bit without recompiling my application that would remain a 32bit application to take advantage of 64bit ? Or I should recompile my application ? If I don't need to recompile my application, can I link it with 64bit Congnex library? If I have to recompile my application, is it possible to cross compile the application so that my develop suite is on a 32bit PC? Every help will be very appreciated!! Thank in advance

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• implementing a download manager that supports resuming

  - by Idan K

  hi, I intend on writing a small download manager in C++ that supports resuming (and multiple connections per download). From the info I gathered so far, when sending the http request I need to add a header field with a key of "Range" and the value "bytes=startoff-endoff". Then the server returns a http response with the data between those offsets. So roughly what I have in mind is to split the file to the number of allowed connections per file and send a http request per splitted part with the appropriate "Range". So if I have a 4mb file and 4 allowed connections, I'd split the file to 4 and have 4 http requests going, each with the appropriate "Range" field. Implementing the resume feature would involve remembering which offsets are already downloaded and simply not request those. Is this the right way to do this? What if the web server doesn't support resuming? (my guess is it will ignore the "Range" and just send the entire file) When sending the http requests, should I specify in the range the entire splitted size? Or maybe ask smaller pieces, say 1024k per request? When reading the data, should I write it immediately to the file or do some kind of buffering? I guess it could be wasteful to write small chunks. Should I use a memory mapped file? If I remember correctly, it's recommended for frequent reads rather than writes (I could be wrong). Is it memory wise? What if I have several downloads simultaneously? If I'm not using a memory mapped file, should I open the file per allowed connection? Or when needing to write to the file simply seek? (if I did use a memory mapped file this would be really easy, since I could simply have several pointers). Note: I'll probably be using Qt, but this is a general question so I left code out of it.

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• How does PHP PDO work internally ?

  - by Rachel

  I want to use pdo in my application, but before that I want to understand how internally PDOStatement->fetch and PDOStatement->fetchAll. For my application, I want to do something like "SELECT * FROM myTable" and insert into csv file and it has around 90000 rows of data. My question is, if I use PDOStatement->fetch as I am using it here: // First, prepare the statement, using placeholders $query = "SELECT * FROM tableName"; $stmt = $this->connection->prepare($query); // Execute the statement $stmt->execute(); var_dump($stmt->fetch(PDO::FETCH_ASSOC)); while ($row = $stmt->fetch(PDO::FETCH_ASSOC)) { echo "Hi"; // Export every row to a file fputcsv($data, $row); } Will after every fetch from database, result for that fetch would be store in memory ? Meaning when I do second fetch, memory would have data of first fetch as well as data for second fetch. And so if I have 90000 rows of data and if am doing fetch every time than memory is being updated to take new fetch result without removing results from previous fetch and so for the last fetch memory would already have 89999 rows of data. Is this how PDOStatement::fetch works ? Performance wise how does this stack up against PDOStatement::fetchAll ?

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• what exactly is the danger of an uninitialized pointer in C

  - by akh2103

  I am trying get a handle on C as I work my way thru Jim Trevor's "Cyclone: A safe dialect of C" for a PL class. Trevor and his co-authors are trying to make a safe version of C, so they eliminate uninitialized pointers in their language. Googling around a bit on uninitialized pointers, it seems like un-initialized pointers point to random locations in memory. It seems like this alone makes them unsafe. If you reference an un-itilialized pointer, you jump to an unsafe part of memory. Period. But the way Trevor talks about them seems to imply that it is more complex. He cites the following code, and explains that when the function FrmGetObjectIndex dereferences f, it isn’t accessing a valid pointer, but rather an unpredictable address — whatever was on the stack when the space for f was allocated. What does Trevor mean by "whatever was on the stack when the space for f was allocated"? Are "un-initialized" pointers initialized to random locations in memory by default? Or does their "random" behavior have to do with the memory allocated for these pointers getting filled with strange values (that are then referenced) because of unexpected behavior on the stack. Form *f; switch (event->eType) { case frmOpenEvent: f = FrmGetActiveForm(); ... case ctlSelectEvent: i = FrmGetObjectIndex(f, field); ... }

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• Mysql Database Question about Large Columns

  - by murat

  Hi, I have a table that has 100.000 rows, and soon it will be doubled. The size of the database is currently 5 gb and most of them goes to one particular column, which is a text column for PDF files. We expect to have 20-30 GB or maybe 50 gb database after couple of month and this system will be used frequently. I have couple of questions regarding with this setup 1-) We are using innodb on every table, including users table etc. Is it better to use myisam on this table, where we store text version of the PDF files? (from memory usage /performance perspective) 2-) We use Sphinx for searching, however the data must be retrieved for highlighting. Highlighting is done via sphinx API but still we need to retrieve 10 rows in order to send it to Sphinx again. This 10 rows may allocate 50 mb memory, which is quite large. So I am planning to split these PDF files into chunks of 5 pages in the database, so these 100.000 rows will be around 3-4 million rows and couple of month later, instead of having 300.000-350.000 rows, we'll have 10 million rows to store text version of these PDF files. However, we will retrieve less pages, so again instead of retrieving 400 pages to send Sphinx for highlighting, we can retrieve 5 pages and it will have a big impact on the performance. Currently, when we search a term and retrieve PDF files that have more than 100 pages, the execution time is 0.3-0.35 seconds, however if we retrieve PDF files that have less than 5 pages, the execution time reduces to 0.06 seconds, and it also uses less memory. Do you think, this is a good trade-off? We will have million of rows instead of having 100k-200k rows but it will save memory and improve the performance. Is it a good approach to solve this problem and do you have any ideas how to overcome this problem? The text version of the data is used only for indexing and highlighting. So, we are very flexible. Thanks,

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• what are all the Optimize tricks that you know for asp.net code ?

  - by Aristos

  After some time of many code programming on asp.net, I discover the very big speed different between string and StringBuilder. I know that is very common and known but I just mention it for start. The second think that I have found to speed up the code, is to use the const, and not the static, for declare my configuration constants value (especial the strings). With the const, the compiler not create new object, but just place the value, on the point that you have ask it, but with the static declaration, is create a new memory object and keep its on the memory. My third trick, is when I search for string, I use hash values, and not the string itself. For example, if I need a List<string SomeValues, and place inside strings that I need to search them, I prefer to use List<int SomeHashValue, and I use the hash value to locate the strings. My forth thought that I was wandering, is if is better to place big strings in one line, or separate them in different lines with the + symbol to be more easy to read out. I make some tests and see that the compiler make a good job is some split the string, in many lines, using the + symbol. What other tricks/tips do you know and use on your programming to make it run faster, and maybe use less memory. Well I know, that some times, to make something run faster, you need more memory, more cache. My priority is on speed. Because Speed Counts.

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• Is a call to the following method considered late binding?

  - by AspOnMyNet

  1) Assume: • B1 defines methods virtualM() and nonvirtualM(), where former method is virtual while the latter is non-virtual • B2 derives from B1 • B2 overrides virtualM() • B2 is defined inside assembly A • Application app doesn’t have a reference to assembly A In the following code application app dynamically loads an assembly A, creates an instance of a type B2 and calls methods virtualM() and nonvirtualM(): Assembly a=Assembly.Load(“A”); Type t= a.GetType(“B2”); B1 a = ( B1 ) Activator.CreateInstance ( “t” ); a.virtualM(); a.nonvirtualM(); a) Is call to a.virtualM() considered early binding or late binding? b) I assume a call to a.nonvirtualM() is resolved during compilation time? 2) Does the term late binding refer only to looking up the target method at run time or does it also refer to creating an instance of given type at runtime? thanx EDIT: 1) A a=new A(); a.M(); As far as I know, it is not known at compile time where on the heap (thus at which memory address ) will instance a be created during runtime. Now, with early binding the function calls are replaced with memory addresses during compilation process. But how can compiler replace function call with memory address, if it doesn’t know where on the heap will object a be created during runtime ( here I’m assuming the address of method a.M will also be at same memory location as a )? 2) The method slot is determined at compile time I assume that by method slot you’re referring to the entry point in V-table?

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• c# string interning

  - by CodingThunder

  I am trying to understand string interning and why is doesn't seem to work in my example. The point of the example is to show Example 1 uses less (a lot less memory) as it should only have 10 strings in memory. However, in the code below both example use roughly the same amount of memory (virtual size and working set). Please advice why example 1 isn't using a lot less memory? Thanks Example 1: IList<string> list = new List<string>(10000); for (int i = 0; i < 10000; i++) { for (int k = 0; k < 10; k++) { list.Add(string.Intern(k.ToString())); } } Console.WriteLine("intern Done"); Console.ReadLine(); Example 2: IList<string> list = new List<string>(10000); for (int i = 0; i < 10000; i++) { for (int k = 0; k < 10; k++) { list.Add(k.ToString()); } } Console.WriteLine("intern Done"); Console.ReadLine();

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• ERB Template removing the trailing line

  - by KandadaBoggu

  I have an ERB template for sending an email. Name: <%= @user.name %> <% unless @user.phone.blank? %> Phone: <%= @user.phone %> <% end %> Address: <%= @user.address %> When the user hasn't set the phone then the email body is as follows: Name: John Miller Address: X124 Dummy Lane, Dummy City, CA I am trying to remove the blank line between Name and Address when Phone is empty. Name: John Miller Address: X124 Dummy Lane, Dummy City, CA I have tried to use <%--%> tags(to remove the trailing new line) without any success. Name: <%= @user.name %> <%- unless @user.phone.blank? -%> Phone: <%= @user.phone %> <%- end -%> Address: <%= @user.address -%> How do I work around this issue?

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• How do I patch a Windows API at runtime so that it to returns 0 in x64?

  - by Jorge Vasquez

  In x86, I get the function address using GetProcAddress() and write a simple XOR EAX,EAX; RET; in it. Simple and effective. How do I do the same in x64? bool DisableSetUnhandledExceptionFilter() { const BYTE PatchBytes[5] = { 0x33, 0xC0, 0xC2, 0x04, 0x00 }; // XOR EAX,EAX; RET; // Obtain the address of SetUnhandledExceptionFilter HMODULE hLib = GetModuleHandle( _T("kernel32.dll") ); if( hLib == NULL ) return false; BYTE* pTarget = (BYTE*)GetProcAddress( hLib, "SetUnhandledExceptionFilter" ); if( pTarget == 0 ) return false; // Patch SetUnhandledExceptionFilter if( !WriteMemory( pTarget, PatchBytes, sizeof(PatchBytes) ) ) return false; // Ensures out of cache FlushInstructionCache(GetCurrentProcess(), pTarget, sizeof(PatchBytes)); // Success return true; } static bool WriteMemory( BYTE* pTarget, const BYTE* pSource, DWORD Size ) { // Check parameters if( pTarget == 0 ) return false; if( pSource == 0 ) return false; if( Size == 0 ) return false; if( IsBadReadPtr( pSource, Size ) ) return false; // Modify protection attributes of the target memory page DWORD OldProtect = 0; if( !VirtualProtect( pTarget, Size, PAGE_EXECUTE_READWRITE, &OldProtect ) ) return false; // Write memory memcpy( pTarget, pSource, Size ); // Restore memory protection attributes of the target memory page DWORD Temp = 0; if( !VirtualProtect( pTarget, Size, OldProtect, &Temp ) ) return false; // Success return true; } This example is adapted from code found here: http://www.debuginfo.com/articles/debugfilters.html#overwrite .

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• How Can I Compress Texture in OpenGL on iPhone/iPad?

  - by nonamelive

  Hi, I'm making an iPad app which needs OpenGL to do a flip animation. I have a front image texture and a back image texture. Both the two textures are screenshots. // Capture an image of the screen UIGraphicsBeginImageContext(view.bounds.size); [view.layer renderInContext:UIGraphicsGetCurrentContext()]; image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); // Allocate some memory for the texture GLubyte *textureData = (GLubyte*)calloc(maxTextureSize*4, maxTextureSize); // Create a drawing context to draw image into texture memory CGContextRef textureContext = CGBitmapContextCreate(textureData, maxTextureSize, maxTextureSize, 8, maxTextureSize*4, CGImageGetColorSpace(image.CGImage), kCGImageAlphaPremultipliedLast); CGContextDrawImage(textureContext, CGRectMake(0, maxTextureSize-size.height, size.width, size.height), image.CGImage); CGContextRelease(textureContext); // ...done creating the texture data [EAGLContext setCurrentContext:context]; glGenTextures(1, &textureToView); glBindTexture(GL_TEXTURE_2D, textureToView); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, maxTextureSize, maxTextureSize, 0, GL_RGBA, GL_UNSIGNED_BYTE, textureData); // free texture data which is by now copied into the GL context free(textureData); Each of the texture takes up about 8MB memory, which is unacceptable for an iPhone/iPad app. Could anyone tell me how can I compress the texture to reduce the memory. I'm a complete newbie to OpenGL. Any help would be appreciated!

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