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• System Center 2012 VMM UI is very slow

  - by Grant

  I've recently setup system center 2012 a new server 2008 r2 server which I'm using for virtual machines. Everything seems to be working fine, and the virtual machines are nice and fast. But the Virtual Machine Manager interface is always excruciatingly slow. Sometimes taking up to 15 seconds moving between screens. It's very frustrating trying to use it when a task that just involves a couple clicks ends up taking several minutes. Pages that have a lot of form fields seem to take the longest to load - such as the page to change hardware settings of a virtual machine. Is this just normal performance for VMM? If not, where can I look to find what is slowing it down. Nothing else on the system seems to suffer. I can load and use Hyper-V manager with no noticable slowness. Even programs like event viewer that are usually rather slow seem to load fairly fast. Only the system center programs seem slow. Server is a Dell R710, 2x16 core opteron 6274 processors, 96GB RAM. OS drive is 2x500GB 7.2k RPM SAS drives in RAID1 (opted for the less expensive 7.2k drives since pretty much everything is stored on the SAN). Am I just being impatient? Does anyone else use VMM 2012 and find it slow?

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• aufs user permissions

  - by user56395

  Anyone know why this doesn't work? Is this user error, AUFS feature or bug maybe: rac@tecraS1:~/tmp$ mkdir orig tmp au rac@tecraS1:~/tmp$ sudo mount -t tmpfs none tmp rac@tecraS1:~/tmp$ sudo chown -R rac tmp rac@tecraS1:~/tmp$ echo hello > orig/hello rac@tecraS1:~/tmp$ sudo mount -t aufs -o br=tmp:orig none au rac@tecraS1:~/tmp$ ls -al au total 8 drwxrwxrwt 4 rac root 100 2011-01-06 13:53 . drwxr-xr-x 5 rac rac 4096 2011-01-06 13:52 .. -rw-r--r-- 1 rac rac 6 2011-01-06 13:53 hello rac@tecraS1:~/tmp$ rm au/hello rm: cannot remove `au/hello': Operation not permitted rac@tecraS1:~/tmp$ Seems the aufs files were created as root and user has no access to them: rac@tecraS1:~/tmp$ sudo rm au/hello rac@tecraS1:~/tmp$ ls -al tmp total 4 drwxrwxrwt 4 rac root 120 2011-01-06 13:53 . drwxr-xr-x 5 rac rac 4096 2011-01-06 13:52 .. -r--r--r-- 2 root root 0 2011-01-06 13:53 .wh.hello -r--r--r-- 2 root root 0 2011-01-06 13:53 .wh..wh.aufs drwx------ 2 root root 40 2011-01-06 13:53 .wh..wh.orph drwx------ 2 root root 40 2011-01-06 13:53 .wh..wh.plnk rac@tecraS1:~/tmp$ OS is the latest Lucid with 2.6.35-23 stock kernel. No idea about aufs version. Using sudo chown -R rac tmp/.wh* fixes the problem. Thanks for looking.

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• realtek lan driver problem - win 7

  - by tango _123

  Hi, my new notebook (ACER TM 8371) with Win 7(x32) professional as OS, has strage behaviour with respect to LAN. when I plug or unplug my charger cable, or my notebook goes in stad-by, or just a do nothing, the netwrok connection is lost. All the energy savings functionbality have been in-activated. if i check the network adapter information, it says "a network cabel is unplugged or corrupted", but it is not true.....the cable is in and it is not corrupted (i tried several which works on other machines). if a tried to di-habilitate and hence re-habilitate, it allows di-habilitation and not to further re-habilitate (it says "no driver for the network card" are available). in some cases, also, the driver disappears (i cannot see it anylonger). if i restart the notebook, everything comes back to normality, but.....today in 3 hours i had to restart 6 times!!! can anyone help me? win 7 says the driver is the last one, so no need to update it. here are some techinical information aboiut network card and driver: Name [00000015] Realtek PCIe GBE Family Controller Adapter type Ethernet 802.3 Product type Realtek PCIe GBE Family Controller Installated YES ID device PNP PCI\VEN_10EC&DEV_8168&SUBSYS_02831025&REV_02\4&266E4C4F&0&00E2 last reset 20/11/2009 11:27 Index 15 Service name RTL8167 I/O Port 0x0000FF00-0x0000FFFF Memory address 0xE2500000-0xE2500FFF Memory address 0xE1400000-0xE140FFFF IRQ Channel IRQ 18 Driver c:\windows\system32\drivers\rt86win7.sys (7.3.522.2009, 164,00 KB (167.936 Byte), 28/08/2009 22:12)

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• What could cause Windows 7 to hang whenever I install something?

  - by Larsenal

  I've had this problem when installing several different programs (iTunes, Adobe Acrobat Reader just to name two). Regardless of what the program is, the install usually gets at least 90% through the process and then just hangs. I don't see anything bad in the event log besides the following (and this didn't occur exactly at the time of install): wuaueng.dll (964) SUS20ClientDataStore: A request to write to the file "C:\Windows\SoftwareDistribution\DataStore\DataStore.edb" at offset 16252928 (0x0000000000f80000) for 32768 (0x00008000) bytes succeeded, but took an abnormally long time (185 seconds) to be serviced by the OS. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem. I've run check disk and it passed. I've had some problems with BIOS settings in the past with Windows 7, but I'm not sure whether that could be related. Update... I also see this error in the event log: Volume Shadow Copy Service error: Unexpected error querying for the IVssWriterCallback interface. hr = 0x80070005, Access is denied. . This is often caused by incorrect security settings in either the writer or requestor process. Operation: Gathering Writer Data Context: Writer Class Id: {e8132975-6f93-4464-a53e-1050253ae220} Writer Name: System Writer Writer Instance ID: {33493f01-ac1b-4efb-a378-3053ab03100d} One last wrinkle.... I see "Previous versions" of c:\ which look like they correspond to the time of attempted installation.

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• Does using a hexacore CPU make sense?

  - by Exa

  I'm currently planning to upgrade my computer system and I want to exchange CPU, board and RAM. I already had a look at some hexacore-CPUs from AMD and would like to know if it makes any sense to use such a CPU with six cores. Is there any software which really uses six cores? Especially in gaming? I'm using this PC mostly for gaming and from time to time for developing. I know that on the dual-core system (2 x 3GHz) I currently use, Visual Studio creates two instances of the compiler, one for each core. Would there be six instances of the compiler on a hexacore system for super fast compiling? Is there any software that uses six cores? Would running two applications cause the usage of more CPUs? (For example two CPUs for a game you're playing while two other CPUs are used for compiling at the same time) I hope someone can point out the benefits of a hexacore system. The OS would be Windows 7 64 Bit and I use the PC for gaming most of the time. (Crysis 2, CoD, stuff like that)

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• Merely installing PHP5 causes my AWS Ubuntu server to die minutes later from a massive CPU spike

  - by Mark Amery

  I have an AWS server with Ubuntu 11.04 as the OS that is running an Apache2 webserver (incidentally Python-based and using Django). We recently needed to add support for php5 to let us use a third party PHP library (incidentally for serving minified versions of js and css files). However, for no reason any of us can discern, if we simply run sudo apt-get install php5 on the server, then the install appears to finish successfully but, without us taking any further action (including not yet running sudo apt-get install libapache2-mod-php5, which I think would be the next step for us if everything worked), or actually running any PHP scripts on the server, a few minutes later the server becomes impossible to connect to, and looking at the 'Monitoring' tab for the server in the EC2 Management Console reveals that a while after the installation, CPU usage spikes to 100% and stays there permanently (until we reboot the server from the AWS Console). After rebooting, the server also reliably dies within a few (between 0 and 10) minutes. We restored the server to a pre-PHP state from an AMI Image, observed that it was stable, and then tried installing PHP5 again and observed the server die in exactly the same way, so we're pretty much certain that installing PHP5 is what causes the symptoms. What on earth could be causing this behaviour, and how can we get PHP installed on the server without it dying?

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• Remote access to phpmyadmin from computer belongs to same LAN

  - by Charles

  OK... I solved it. It is because I have not configured the httpd.conf to allow the centos listen port 80 and 8080. Listen 80 Listen 8080 I have setup the myphpadmin on my CentOS 6.4 recently. I can access and login to the myphpadmin on my localhost. However, when I type http://[hostipaddr]/phpmyadmin on my other computer in the same LAN with the CentOS, the browser simply cannot access the page. Below are some of the current configuration. Anyone can help please......? config.inc.php $i++; /* Authentication type */ $cfg['Servers'][$i]['auth_type'] = 'http'; /* Server parameters */ $cfg['Servers'][$i]['host'] = 'localhost'; $cfg['Servers'][$i]['connect_type'] = 'tcp'; $cfg['Servers'][$i]['compress'] = false; /* Select mysql if your server does not have mysqli */ $cfg['Servers'][$i]['extension'] = 'mysql'; $cfg['Servers'][$i]['AllowNoPassword'] = false; phpmyadmin.conf <Directory /var/www/html/phpmyadmin/> order allow,deny allow from all </Directory> Furthermore, I can access the webpage that stored in the CentOS from my other computer without problems. After using wireshark and tcpdump, I found that the server (the Cent OS) keep resetting the connection. (192.168.1.106 is my other computer, 192.168.1.101 is my CentOS) 23:29:42.281473 IP 192.168.1.106.55999 > 192.168.1.101.webcache: Flags [S], seq 2559409090, win 65535, options [mss 1460,nop,wscale 8,nop,nop,sackOK], length 0 23:29:42.281504 IP 192.168.1.101.webcache > 192.168.1.106.55999: Flags [R.], seq 0, ack 2559409091, win 0, length 0 I have disabled the iptables service on the CentOS already.

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• Connection between Asp.Net and Oracle 10g Express Edition

  - by l3gion

  Hello, I'm struggling to find a way to connect my Asp .Net + C# application with my Oracle 10g Express Edition. Here's my scenario, I'm at Mac OS and I have 2 Virtual machines, one for Win 7 (VS 2010 app) and another with a Parallels Virtual Appliance with Oracle 10g Express Edition 1.1. Which provider (Oledb, ODP.NET, etc..) should I use? How to make the connection to the server in C#? Right now I have this: <appSettings> <add key="conn" value="Data Source=10.211.55.11;Persist Security Info=True;User ID=l3gion;Password=l3gion;" /> </appSettings> And at the .cs file: SqlCommand cmd = new SqlCommand("insert_thing", new SqlConnection(ConfigurationManager.AppSettings["conn"])); cmd.CommandType = CommandType.StoredProcedure; *insert_thing is a stored procedure Using this I got this error: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server) I've searched for some possible solutions. Tried some, including: firewall disabled, allow remote connection at oracle express edition using this cmd line ("EXEC DBMS_XDB.SETLISTENERLOCALACCESS(FALSE);").. The error persists. Can anyone guide me into the right direction? I'm a newbie with this type of things. Thank you for your patience. regards

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• Industrial strength cloud file storage

  - by ArthurG

  I'm looking for an industrial strength cloud file storage system. It will be used by multiple people in a startup. Our requirements: Transparent file system access: files and folders in the file system must be able transparently access (read and write) files in the cloud; files must be synchronized whenever network access is available and buffered otherwise. The system must be usable by non-technical people. Access control: we need to control who can access which files, at least on a very coarse basis. e.g., the developers will be able to access the system design documents, only the corporate folks can access recruiting documents, and only management can access certain corporate documents. Dropbox provides this via Sharing folders, but that's not adequate, if I understand it correctly, because there's no authentication of the sharing user. so the cloud service should have a notion of an account (our startup) with multiple users with distinct credentials and rights for each user Clients: it must be accessible from Macs and PCs; I would hope that it supports Linux (e.g., Ubuntu) too Security: it must provide robust security Backup: the cloud service must reliably backup the files Versioning: change version history, is a big plus, but not required Not free: we're willing to pay for the service So far, we've reviewed the following, albeit not completely thoroughly: Dropbox: has all except 1) Access control, which is provided via Sharing folders, but that's not adequate, if I understand it correctly, because there's no authentication of the sharing user. and 2) Security, as discussed here http://www.economist.com/blogs/babbage/2011/05/internet_security and here http://blog.dropbox.com/?p=821. Windows Live Mesh, has all except 1) Clients, only supporting Windows 7 and OS X. SpiderOak has all, except 1) Transparent file system access, which is only available for 1 user. Amazon Cloud, doesn't offer 1) Transparent file system access Rackspace Cloud Drive has all except 1) Access control and 2) Versioning I'll gladly include any clarifications or additional systems the community provides. Arthur

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• quickly close all word and excel

  - by dyenatha

  Suppose I open 10 Word files and 10 Excel files and make no changes, how do I quickly taskkill all at once? Because I must repeat several attempts to replicate race, I'm hoping for a command-line solution. I'm willing to try PowerShell and cygwin (1.5) if necessary. The OS is Windows XP SP3 with current patches (still IE7). I tried "taskkill /pid 1 /pid 2 /t" where 1 is PID of EXCEL.EXE and 2 is PID of WINWORD.EXE, but it closed only 1 window of each program. I'm trying to replicate a race where an add-in for Microsoft Office 2007 fails to exclusive-lock one of its own files, which caused the 2nd Office program to stop exiting with a warning: System.IO.IOException: The process cannot access the file 'C:\Documents and Settings\me\Application Data\ExpensiveProduct\Add-InForMicrosoftOffice\4.2\egcred' because it is being used by another process. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy) at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options) at System.IO.StreamWriter.CreateFile(String path, Boolean append) at System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding, Int32 bufferSize) at System.IO.StreamWriter..ctor(String path, Boolean append, Encoding encoding) at System.IO.File.WriteAllText(String path, String contents, Encoding encoding) at ExpensiveProduct.EG.DataAccess.Credentials.CredentialManager.SaveUserTable() at ExpensiveProduct.OfficeAddin.OfficeAddinBase.Dispose(Boolean disposing) at ExpensiveProduct.OfficeAddin.WordAddin.Dispose(Boolean disposing) at ExpensiveProduct.OfficeAddin.OfficeAddinBase.OnHostShutdown() at ExpensiveProduct.OfficeAddin.OfficeAddinBase.Unload(ext_DisconnectMode mode)

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• How do I prevent a tar pipe from causing swapping?

  - by Jeff Shattock

  I have a rather large filesystem that I need to transfer from one Linux server to another. I figured the best way to do this was via a tar/netcat pipe arrangment, something like tar c . | pv | nc blah blah blah And it works great, the network stays fairly saturated, life is good. Until the source machine starts swapping. The files are on a raid on the source system, so the read speed is much faster than the write speed on the other end. Since the dest machine hasnt picked up the data yet, the source machine needs to stick it somewhere, so into RAM it goes, until there is no more free RAM. It then starts swapping, which is horribly painful since that machine has its OS installed on a somewhat slow CF card. Both machines have 4GB of physical ram, 64 bit Ubuntu 9.04 server. GigE link between them. How do I prevent this swapping? Can I put a "speed-limit" on the tar or netcat process so that the transfer speed doesn't overwhelm the write throughput on the destination end? The man pages didn't list anything, but there might be something I'm overlooking.

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• How to verify system using right GPU, after system reset [duplicate]

  - by Antoros

  This question already has an answer here: Is my mobile AMD card being used? 2 answers OS: Windows 8 CPU: Intel® Core™ i7 Processor 3635QM GPU 1 : Intel HD Graphics 4000 GPU 2 : AMD Radeon™ HD 8870M other info: System Spects Problem: im unsure that CCC is using AMD card instead of Intel's, i have encountered several issues since updating to 8.1 and i don't know what to do What happened: Installed 8.1 patch first day After 1 minute of use, BBSOD, windows never loaded again System restore wouldnt recognize 8.0 restore points i did a system reset to windows 8 since the laptop was only 3 weeks old System Broke, it did restore to factory BUT kept the registry almost intact, i had to install almost everything again, since the factory drivers where working with the updated one's registry and several problems CCC Broke too <- What i've already done Installing new drivers on top of old ones didnt work, so i used AMD uninstaller first Uninstalled and Re-installed Intel's HD Graphics Driver Tried to install mobile center, but AMD told me that it wasnt compatible (even if thats the only driver that they provide via their page as seen Here) Tried to use Auto-Detect, couldnt install driver because card was disabled because it didnt have the drivers... (see what they did here?) Had to use a workaround with Samsung Update, the driver didnt appear as download so had to use search and downloaded the driver manually. Now the graphic card appears on device manager and catalyst but as 8800 series (not exact model), and cant check the card with neither dxdiag/GPU-z/HWMonitor when right-clicking on CCC only Intel card appears launching a game and using as "high performance" would speed it up a little but i cant be sure How to verify its working properly? HWMonitor wont show AMD card even when set to high performance Latest GPU-Z wont work because a problem with Intel's, and legacy ones wont either what can I do now? I don't even know if I fixed my problem or not, and i also want to to use Adobe Premier with it, and its locked (the option to run it with the amd card not intels) Edit: now it seems to work, but cant change the setting for adobe Premiere and other programs that i Need to

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• SFTP, SCP, Secure Webdav: which is the most suitable ?

  - by Xavier Maillard

  Hi, currently, I am hosting a webdav share setup in order to store files I need anywhere I am. It is available via HTTPS. Things are that I do not need all the HTTP machinery -i.e. my nginx http server is only there for this webdav folder. I am not sure I made the best choice. My requirements on the client side are: secured transfers mountable as a network drive at work with 'near realtime sync' usable for any OS I could use (including my mobile (android)) At first, I chose webdav since it would pass through my work proxy (which refuses all that is not on HTTP/S (port 80 or 443)). Today, I am not satisfied with the setup and even if nginx memory footprint is pretty small, its webdav support is not really "clean" and full. What would you recommend between SFTP, SCP and the current webdav solution ? I think SFTP is the closest solution but I still have to find out how to pass through my proxy ;) SCP seems quite limited as I read about it (only file transfers if I read right). Cheers

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• Using the same Windows 8 Upgrade installer on multiple PCs

  - by Karan

  As per this article: You may transfer the software to another computer that belongs to you. … You may not transfer the software to share licenses between computers. But what if I have a bunch of PCs with a mix of XP/Vista/Windows 7? Can I purchase either the Windows 8 Pro Upgrade $40 (download only) or $70 (DVD) version (both of which come without a key) only once and use it to upgrade all the PCs? Since I'm not sharing the license and each PC has its own valid genuine license, it should be allowed, right, or is it illegal? Even if they want people to shell out $40/$70 for each PC, how would they enforce the use of the installer/media on only one PC each? EDIT: I have been given to believe by a source that the installer will only check for the previous OS' key, which is what is confusing me (I have never purchased an upgrade version before this, only full retail or pre-installed versions). Is this true or will I need to enter two keys to make the upgrade work, one for the previous version and then one for Windows 8? If the latter is the case, then the issue is solved since obviously the same Windows 8 key will not be valid for multiple PCs.

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• Utilities for finding x/y screen coordinates

  - by slothbear

  I have an application that needs the user to enter the x and y location of a couple of items on the screen. [Yes, this is crap and I'll replace it, but for now...] On Mac OS X, I'm using Snapz Pro X. When I choose to take a snap of a selection, the interface displays the mouse cursor location. This is OK for my personal use, but I can't ask users to buy a $69 program for this function. I thought I had a solution with the built-in program "Grab", but it reports the coordinates from the bottom left, and I need it from the top left. I don't have access to Windows; not sure what to use there. I've not even been able to come up with good search terms since mouse and coordinates and x/y are so common. Ideas are welcome there. Extra credit: same x/y finder for Linux. A Java program would be OK too, since the main application is in Java.

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• a disk read error occurred [closed]

  - by kellogs

  Hi, ¨a disk read error occurred¨ appears on screen after choosing to boot into Windows XP from GRUB. [root@localhost linux]# fdisk -lu Disk /dev/sda: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x48424841 Device Boot Start End Blocks Id System /dev/sda1 63 204214271 102107104+ 7 HPFS/NTFS Partition 1 does not end on cylinder boundary. /dev/sda2 204214272 255606783 25696256 af HFS / HFS+ Partition 2 does not end on cylinder boundary. /dev/sda3 255606784 276488191 10440704 c W95 FAT32 (LBA) Partition 3 does not end on cylinder boundary. /dev/sda4 276490179 312576704 18043263 5 Extended /dev/sda5 * 276490240 286709759 5109760 83 Linux /dev/sda6 286712118 310488254 11888068+ b W95 FAT32 /dev/sda7 310488318 312576704 1044193+ 82 Linux swap / Solaris sda is a 160GB hard disk with quite a few partitions and 3 OSes installed. I am able to boot into Linux and Mac OS fine, but not into Windows anymore. The Windows system is located on /dev/sda1. I can not recall how exactly have I used testdisk but it once said that ¨The harddisk /dev/sda (160GB / 149 GB) seems too small! (< 172GB / 157GB)¨ or something simillar. So far I have tried to ¨fixboot¨ and ¨chkdsk¨ from a recovery console on the affected windows partition (/dev/sda1), the plug off power cord for 15 seconds trick, reinstalling GRUB, repairing the MFT and boot sector of the affected partition via testdisk, what next please ? Thank you!

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• Internet Explorer ignoring PHP setcookie() from CentOS server

  - by Hussein Sabbagh

  In the past we used a windows XAMPP server for an internal website. It worked fine but had some intermittent issues and we decided to move to a LAMP server on CentOS. We made the switch today but it turns out Internet Explorer ignores every attempt I make at saving a cookie. There is no underscore in the URL being used... the URL is actually the same as the one the XAMPP server used, where I was able to save cookies without any problems. It really doesn't make any sense to me, all of the code is the same. The only thing to change is the version of PHP and the server OS. The website works on all other browsers except IE. I can't even make a simple setcookie call. On a blank test page I use setcookie("test", "test", time()+36000, "/"); sleep(5); print_r($_COOKIE); and there is nothing there. Our users can't log into the website because of this and I have no idea what the issue is. If anyone can provide any clues or resolutions I would greatly appreciate it. Obviously the easy answer is to not use IE, but that is not an option in this case.

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• Wake a Mac display from sleep via SSH

  - by MaxGabriel

  I'm using Jenkins as a CI server, where I'm SSHing into an iMac running OS X Mountain Lion (10.8.4) to run some UIAutomation integrations tests on an iOS app. The iMac actually sits 10 ft from me (but across a table) so I'm able to see the screen. However, the tests don't wake up the display, so I often can't see them. Is there a way to wake up the display from the terminal once Jenkins has SSHed in? So far I have tried using Applescript to press an arrow key, and using the Wake Assist application. I also tried setting the wake schedule to be the current date. Finally, I tried using the caffeinate command: caffeinate -t 300 &. The computer's "Wake for Wi-Fi access" checkbox is enabled. So far my best workaround is to just set the iMac to stay awake for atleast 3 hours. However, it'd be nice to keep normal sleep behavior, as I hypothesize that the screen waking from sleep would alert me visually that the integration tests are running. It's also significantly cooler :)

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• Puzzling TCP performance over 3G / UMTS

  - by lemonsqueeze

  I'm using 3G as my primary internet connection, and TCP over this thing is getting more puzzling every day. For example: Downloading from kernel.org is crazy fast: $wget http://www.kernel.org/pub/linux/kernel/v3.0/linux-3.6.8.tar.bz2 increases to ~500kB/s after a few secs ! Some servers are incredibly slow, for instance www.graphic-pc.com:Same thing, downloading a big file with wget it starts at ~30kB/s for a split second, then collapses to 5-10k or even worse. Web browsing is decent but somewhat unreliable. Randomly, a page will take really long to load or even fail to load, but a reload can succeed almost immediately. Now, by chance i started playing with OpenVPN over UDP on top of the 3G connection, and OMG suddenly everything's extremely fast !Same www.graphic-pc.com now shoots at 100-200kB/s ! What's going on here ??? How come it is so much better with the VPN than without ?? And why does graphic-pc.com crawl when kernel.org flies ?Something to do with my tcp stack (or the server), or some buggy router in between ?? Notes: Setup is laptop running Ubuntu Lucid and a Huawei 3G dongle (So direct pppd connection). I can reproduce this pretty much any time during the day and I'm not moving, so it's clearly not cell environment or internet congestion. (although kernel.org without VPN sometimes does worse in the evening, 60kB or so - but still 500kB with VPN !) For 2) wireshark shows retransmitted packets, dup ack's, even out of order sometimes. I've tried playing with different /proc/sys/net/ipv4 parameters (tcp_rmem, window_scaling, tcp_congestion...) doesn't seem to make a difference. Update: Tried under windows 7 (no VPN) with some interesting results: tcp settings : default tcp_optimizer kernel.org : 10 kB/s 20 kB/s graphic-pc.com: 8 kB/s 70 kB/s ! tcp_optimizer turned on ctcp among other things. Have to check what os graphic-pc.com is running, my bet is linux's tcp_westwood and ms ctcp don't mix well here...

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• sort utility on cyrillic text

  - by Anton

  I have to sort some lines of cyrillic characters and I want to use the sort utility (on MAC OS X 10.6). The problem is that result is incorrect. I take the text into clipboard, then run pbpaste | sort This is plaintext data, and I also tried passing a file to the sort command. My source data is ??????? ????? ???? ???? ?????? ??????? ???????? ?????? ? ????? ??????????????? ?????????? ???? ?????? And after sorting I get ???? ???? ???? ????? ?????? ?????? ?????? ? ????? ??????????????? ??????? ??????? ???????? ?????????? Theese lines aren’t even grouped by first letter. I tried option -d, but then I get an error sort: string comparison failed: Illegal byte sequence sort: Set LC_ALL='C' to work around the problem. sort: The strings compared were \320\321\321\321' and\320\320\320\321\321\320’. Exporting the variable as recommended doesn’t solve the problem. What can I do to use the sort utility for such a task? Any additional info is necessary?

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• How to recover my invisible HD again?

  - by pattulus

  I made this several times now, but this time something bad happened. What I did: I installed Windows 7 at a 32GB partition on my slot 2 HD in my MacPro. Windows 7 made a 105MB partition… I knew this before, but what I didn’t know was that this partition is now on my slot 4 HD. My home folder, my private videos and some other stuff are on this 1TB drive. What I found out so far: I’m currently logged in as another admin since my OS partition as well as the two other HD's aren't harmed. Disk Utility: … only shows the 105MB NTSF partition on this 1TB volume. It isn’t showing my old 1TB partition/ex-HD named "storehouse". Only the partition tab is telling me that there now is a 1TB empty free unpartitioned space. Data Rescue II: … is showing the Volume as it used to be with it's old Name "storehouse". A quick scan and a thorough scan both were done in 1 second which leds me to the conclusion that there's isn’t something deleted at all (» hope!). Data Rescue doesn’t even mention the damn "system reserved" partition. Drive Genius: … also shows the old partition and doesn’t mention the new one. But looking at the info it tells me under "content": FDisk_partition_scheme (instead of Apple_partition_scheme). Well D'oh…. Tech Tools: … doesn’t show the volume, otherwise I'd might have been tempted to press rebuild/repair. What to do next?? I think the best approach is to buy another 1TB HD and let Disk Warrior Clone my old one to it… just to be on the safe side. But what is the best thing to do after this… ???

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• Running batch file through a service.

  - by wallz

  I'm trying to schedule a batch file to run through a third party application, however the output file doesn't get created in the directory. If I run the .BAT file from the command line, it works and the file gets created. Also using the Windows Schedule will also succeed. Basically, the 3rd party software will schedule the .BAT file and it shows success within the 3rd party user interface. The difference between running from the command prompt and the software, is that the software will use its Windows service to launch the batch. The 3rd party software will show success since it was able to successfully call the .BAT file to run, however it has no control of the other EXE's that's being called within the script. I'm able to run a simple .BAT file in the 3rd party software, for example a copy command. The .BAT I'm having problems with calls a compiled EXE which launches Excel to create a file to a location. The .bat file calls something.exe, which then calls Excel.exe: C:\something.exe -o D:\filename.xlsm C:\filename.xlsm refresh_pivot Do you think it's a permissions issue? I used Process Monitor to verify any Access Denied errors but everything seems to be working according to the trace. It worked on a non-64-bit OS, I'm currently using Win2008 64-bit.

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• Would an array of SSD drives be able to succesfully substitute the system memory?

  - by Florin Mircea

  I watched a few videos trying to answer this. This video (youtube.com/watch?v=eULFf6F5Ri8) shows a bunch of guys stacking 24 SSD's reaching a peak of around 2GBps r/w. That's under the limit of the worst DDR3 in this list (memorybenchmark.net/write_ddr3_amd.html) - that shows DDR3 memory performance varying from 2.78 to 6.55 Gb per second, but that video is over 3 years old. This video (youtube.com/watch?v=27GmBzQWwP0) shows a more optimistic situation, but for PCI-E SSD drives: 5 drives peaking at around 4Gb. And this other video shows that stacking up more than 3 SSD's doesn't realistically offer a substantial added performance. This and the fact that in all benchmarks the drives act quite poorly when dealing with small files (5k file read/write averaging from 10MB to around 30-40MBps) as opposed to how native memory handles such files, seems to indicate a definite NO to this question. Also, the write life cycle is indeed limited and the drives might wear out quickly, as kindly pointed out by paddy. However, I wanted to get more opinions on this. Would it be possible to at least obtain current memory performance with SSD's in RAID 0? And if so, in what circumstances? I am assuming using this configuration with a Windows OS that has a memory pagefile resident to that stack of SSD's, thus making it very fast to work with.

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• Diagnose remote desktop freezes in Windows 7 when no BSOD?

  - by Paul Smith

  Okay, I'm getting no joy from Asus or Microsoft on this, so hoping for some clues on how to narrow down the cause. I have very frequent OS freezes, always & only when running Remote Destkop Client (mstsc) in Windows 7 x64. I never have a bluescreen, and there is never a minidump. The display & input just freezes -- no keyboard, no mouse, and sound will just continue the last wavelength if any. So far, I can't find a way to trap the hang given that there's no bluescreen; advanced startup & recovery settings for system failure are "Write an event" checked, "Automatically restart" checked, and "Kernel memory dump". I've updated to the lasted BIOS, and tried a few different graphics drivers, both generic & ATI. I've also tried disabling Aero, and everything about the remote desktop experience (incrementally unchecked every box in the mstsc - options - experience tab), even disabled/unplugged external monitor to make sure it wasn't a dual-monitor issue. My specs are: Asus G73jh notebook 8GB RAM ATI Mobility Radeon HD 5800 Series graphics (recently tried driver versions 8.791.0.0, 8.801.0.0) American Megatrends G73jh.211 BIOS (7/27/2010) Windows 7 Home Premium x64 Windows Memory Diagnostic passed all of the following at least 3 times with no errors: MATS+ INVC LRAND Stride6 WMATS+ WINVC This notebook is better than most at removing heat (laudable vent design), so I'm not inclined to suspect thermal causes (especially since running 1080p video for hours has never caused a freeze, but mstsc does, reliably, within 5 minutes to an hour). This did seem to start happening after a Windows Update, but I've since reverted every patch applied since a week before the first occurrence, with no joy. (And I'd only had the PC for a couple weeks before that, so it could have been chance + less actual time spent remoting at the beginning.) I'm at my wits end, and I bought this laptop primarily as a remote terminal client (go figure, right?) Any ideas on how to identify the cause of this? Thanks!

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• The suggested way to handle pip(easy_install) with homebrew?

  - by Drake

  I know there are brew-gem and brew-pip but it is still really easy to get confused. Let's say my Mac OS X is 10.7.2. There are at least, as far as I know, 3 locations for Python modules (assume 2.7): /System/Library/Frameworks/Python.framework/Versions/2.7/ /Library/Python/2.7/site-packages /usr/local/lib/python2.7/site-packages/ (controlled within homebrew) For some Python modules, pip install them into 2, the so-called local/customized Python module location, and everything looks and works great. Ex, readline by *easy_install* (ipython suggested me to install readline by *easy_install* instead of pip) For some, it would try to install some miscellaneous files (ex, man, doc, ...) into system-wide location, which requires sudo! Ex, ipython insisted on installing man and doc into /System/Library/Frameworks/Python.framework/Versions/2.7/share/, which violates permission issue and all I can do is to use sudo. For some Python modules installed by brew, they are symbolic linked to /usr/local/lib/python2.7/site-packages/. Everything seems great except that you have to remember to add this location into PYTHONPATH. I am wondering any suggested and uniform way to handle those mass, or any explanation to make those stuff crystal clear.

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