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• Ubuntu Raring on iMac 2008; graphics update ATI Radeon HD 2600 Pro broke my Raring this morning!

  - by user197406

  Was working on my iMac(2008) 20,5" this morning when again some GLX etc updates appeared! As usual I let the update-installer do it's job; when finished updating, my screen got scrambled; I can not work anymore as the screen shivers, shakes and graphics is one big mess. Ctrl+Alt+F1 does not work either as most of the time my screen is black completely! When booting into OSX 10.8.5 (Raring dual boot with OSX 10.8.5), OSX graphics works flawlessly! Can anybody indicate me which ATI Radeon drivers I can download which repairs the 'malversation' of this mornings updates? I guess I will have to startup with some rescue boot disk (Knoppix?) to do manipulations… As I'm still a noob as well I need clear explanations (please). Raring worked perfectly in dual boot on my iMac until this mornings updates! Needles to say the 'final resort' is restarting (re)installation of Ubuntu Raring, but want to attempt to rescue my present 13.04. Thank you! Kind regards, Gaytan!

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• Boot failure on Ubuntu 11.04

  - by B Seven

  I was using my laptop with Ubuntu without problem for a few months. I did not update any software or install any OS updates. This morning when it started, I got error: no such device:.... error: no such disk error: you need to load the kernel first. Press any key to continue... Then takes me back to GRUB menu. Both Ubuntu option and recovery mode option show the same thing (above). What does this mean? How do I fix it? Since I did not install anything new, does it mean the SSD is dying (again)? How to check the SSD to and fix any file system errors? Ubuntu 11.04 EDIT: Just remembered something: when the system was shutting down, it did not turn off. There were a bunch of weird output statements, and I assumed the system had shut down so I turned it off with the power button. Perhaps something got corrupted because of that.

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• Poor performance after reinstalling to a USB drive

  - by anonymous

  I am currently running Ubuntu 11.10 off of a SanDisk 16GB USB. I installed it using a Live USB with the following partition configuration: 6GB Primary /dos FAT32 5GB Logical / ext4 5GB Logical /home ext4 I don't have a hard disk, and don't see myself getting one anytime soon. I rely solely on this 16GB, and two other 4GB USBs, one of which I used as the LiveUSB. I bring the USBs around, and even use the install at work. I previously used an install that used a swap file. It functioned fine for the most part, save for a few slow moments, but I came across this post, and it got me thinking about my USB's life, so I reinstalled with the current config. My problem now is that it is slower. Applications like Firefox would hang more often. In my previous setup (the automatically partitioned setup), Firefox would start hanging if I was running an unzip or install task on the same partition as /. Now however, it would hang if I had another window open i.e. the system settings window. My guess is that it may have something to do with the swap file or the install being on a Logical partition rather than a Primary partition, but I don't know. Any insight as to why it has slowed down?

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• BPM 11g Hands on Training

  - by mseika

  BPM 11g Hands on Training11-14 December 2012, Birmingham (UK) DescriptionThis free hands-on workshop covers the life cycle of a business process from analysis, modeling, simulation, process customization and monitoring using Oracle BPM Suite 11g. The process modeled in the workshop includes integrating with web services, creating complex human workflows with user interfaces for task forms and incorporating rule engine-based decision services. After taking this course on Oracle BPM Suite 11g, you can go onto build industry-focused solutions, customer-facing demos, proof-of-concepts (POCs), pilot implementations and reference architectures. REGISTER NOW Partner Registration Guide Price: FREE Address:Hockley Suite - Oracle OfficesBlythe Valley Business ParkShirley, SolihullWest Midlands B90 8ADUnited Kingdom 11 - 14 December 2012 You will also be able to extend your current SOA implementations with BPMN based business processes.You will have the opportunity to sit the BPM 11g Implementation Specialization exam at the end of the boot camp. The training will finish at 3pm on Friday 14th to allow time for the on-line exam to take place. AgendaThis workshop is 4 days long. 08:30 am: Arrival and sign-in09:00 am: Workshop begins 17:30 pm: Workshop ends (more detail to be provided) Workstation RequirementsAttendees must use their own laptops and it is essential they have the following:           · Minimum 8GB RAM. 40GB free disk space           · VirtualBox (latest version)           ·7zip (required for extracting the VirtualBox image) For more information please contact [email protected].

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• Just installed Ubuntu 12.04. When booting, all I get is a black screen with cursor

  - by user66378

  Installation appears to go fine. After rebooting, I get my motherboard loading screens, but when it comes time for Ubuntu to boot, I just get a black screen with a blinking white underscore in the top-left - same as I got when waiting for the install CD to load, except it lasts forever. The only keypress it seems to recognize is ctrl+alt+del, which reboots. Letters don't register, function keys w/ or w/o modifiers do nothing. I've installed Ubuntu 12.04 twice and got the same error. The first time, I installed it as the only OS, and had it take up the whole disk. The second time, I installed Windows 7 first, then Ubuntu by specifying custom partitions. After this install, it would boot straight to Windows without showing grub. I used EasyBCD to add the Ubuntu installation to grub, and this got grub to show, and let me select it, but it led back to the same error described up top. I've had Linux Mint 11 and 12 installed on this PC, but was unable to get previous versions of Ubuntu to install (always had errors while installing, not after). Hardware: Intel Core i7-2600K Sandy Bridge 3.4GHz (3.8GHz Turbo Boost) LGA 1155 ASUS SABERTOOTH P67 (REV 3.0) LGA 1155 Intel P67 SATA 6Gb/s USB 3.0 ATX Intel Motherboard EVGA 01G-P3-1371-TR GeForce GTX 460 (Fermi) CORSAIR Vengeance 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Western Digital RE4 WD5003ABYX 500GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive

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• Battery life low on notebook using ubuntu 11.10 vs. windows 7

  - by les

  Im using a brand new Dell XPS notebook (bought mar 2012) which has 4.5 hrs battery life using a 6 cell battery-when i use windows 7. The machine uses an Intel core 17 2670qm processor, and a 64 bit operating system. I downloaded Ubuntu 11.10 and installed it on a USB drive, which is how i use it. I still have Windows 7 on the machine. When the machine is booting up I hit F12, and run Ubuntu from the flash drive instead of the machine booting Windows, as it normally would. On the Ubuntu menu, on the top right area, there is a battery menu, which shows how long to charge battery, or how much life left etc..with a fully charged battery the most Ubuntu will give me is 1.5 hrs. I've adjusted all power setting etc by clicking on the battery meter where i can make these adjustments, and have even turned down the brightness on the monitor. I've read through these questions here, and a user wrote to install Ubuntu 12(?)(the alpha version) when it's out this month(april), and this has better power management. Other forums (Ubuntu wiki) state that windows 7 controls power management effectively because it's configured to work with the hardware. I'd like to install Ubuntu and wipe windows but can't because of this issue. I need my notebook to go hours, not an hour and a bit. Can anybody recommend possibly a good software to use, that will work with the machines bios under Ubuntu? Another thought of mine, is- since I didn't yet wipe windows off my hard disk, is windows still possibly controlling the power mgmt aspect on the machine? I've thought of calling tech support at Dell and asking for help there, maybe Dell has something (a tweak?), I can download that'll work under Ubuntu. Looking forward to any help/suggestions i can get here, i'm really stuck on this..

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• Dual Booting WIndows 7 and Ubuntu 12.04

  - by mfes

  I have Windows 7 32 bit installed on a 64 bit Laptop. I am trying to install Ubuntu 12.04.I am trying to install Ubuntu 12.04 using USB. I created the bootable usb using live usb installer. I have 6 partitions in Windows 7 of which in Windows 7, I created a partition of 50 GB and also having an unallocated space of 50 Gb. I will install Ubuntu 12.04 in any one of these space. When I am booting from USB and selecting the option of "Try Ubuntu" and In Ubuntu desktop, when I click "Install Ubuntu 12.04" , and choosing the option as " Something Else " ( I dont want to Install Ubuntu alongside Windows or want to erase Windows totally ), only 3 paritions getting listed. One is system memory reserved as 100 mb. Second is C drive and third partition is listed as a whole space ie remaining space of the entire hard disk is listed instead of partitions. I tried Gparted Editor and it also lists the same as Ubuntu 12.04 So whats the problem and how can I make the Ubuntu to detect all the partitions so that I can install in the unallocated space or in the 50 GB Partition ? ( P.S - When I try the same in my 32 bit desktop, it is detecting all the partitions )

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• For photography use, is Unity is overheating my laptop? Should I try OpenSuse instead?

  - by SoT

  I am a perfect noob here in the Linux world. Previously was using Windows 7. Mine is an HP laptop - Intel core2duo T5470 @ 1.60GHz × 2 / 965GM with 2GB RAM. I installed Ubuntu 12.04TLS and is quite liking it's display. I really recognized it is 3D before knowing it was Unity 3D interface. My uses are image editing, home uses, downloads, browsing etc.. No video-editing/gaming at all. Being a Photography enthusiast I use image editing programs fairly more. But I am now feeling my laptop is getting a bit overheated - processor and hard-disk. I tried lm-sensor and could not make out much of it. Installed Xsensors.7. It gives the same output as lm-sensors gave me. It gives temperature for 4 things Temp1, temp2, temp3, and temp4. For "acpitz". Please guide me in this. However I wanted to ask something more. Which one is better for working with images - photography I mean - openSUSE 12.1 or Ubuntu with unity 3D? Can I get the display quality with the openSUSE distribution? I heard for laptops openSUSE uses power more efficiently, is there any truth? Please suggest me whether I should try openSUSE or not. If so with which GUI? KDE or GNOME? Thanks in advance. Regards SoT

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• libapt-inst1.4:i386 fais to install

  - by user92834

  Today I was notifed of updates, some of them being libapt. So I press "Install Updates", and I got this error: The following packages have unmet dependencies: libapt-inst1.4:i386: Depends: libapt-pkg4.12 (>= 0.8.16~exp12ubuntu10.2) but 0.8.16~exp12ubuntu10.3 is installed Depends: libc6 (>= 2.4) but 2.15-0ubuntu10 is installed Depends: libgcc1 (>= 1:4.1.1) but 1:4.6.3-1ubuntu5 is installed Depends: libstdc++6 (>= 4.4.0) but 4.6.3-1ubuntu5 is installed So I open the terminal and typed sudo apt-get install -f I was shown this: The following extra packages will be installed: libapt-inst1.4 libapt-inst1.4:i386 libapt-pkg4.12:i386 The following NEW packages will be installed: libapt-pkg4.12:i386 The following packages will be upgraded: libapt-inst1.4 libapt-inst1.4:i386 2 upgraded, 1 newly installed, 0 to remove and 18 not upgraded. 1 not fully installed or removed. Need to get 0 B/1,146 kB of archives. After this operation, 3,031 kB of additional disk space will be used. Do you want to continue [Y/n]? I selected "yes". And then: E: Internal Error, No file name for libapt-pkg4.12 Also, when I open the software center, I get a message that the database is broken... I'm using 12.04 64bit But why it wants to install the i386 version? I'm using 64 bit ubuntu...

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• How to get the level and position of the player from an extern program? [on hold]

  - by user3727174

  I want to write a program that needs the current level and position of the player (primary single player). This should work for potentially every game installed and running on the computer my program is running on. The data I need is basically one integer value for the level (if there are any) and three integer values for x, y and optimal z for the position of the player. In which relation/scale or where the null point is does not matter, because this information is going to be interpreted game dependent, I will use this information to read information out of a database created for the game currently running. Currently I'm using C++, but if there is a better option for Java I´m willing to port my program. My thoughs so far are: make a mod for every game that should be supported, get the position/level from there, write this information to the disk and read it from my program tracking mouse/keyboard events and reconstructing the movement won't work Are there any general APIs for something like this? Any Tool to find this data? Or maybe engines that provide APIs to get this data directly from the game?

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• No wubildr, No spaceleft, Boot Error and A previous installation was detected in D:\ubuntu. Please uninstall that before continuing

  - by tdc2bdc

  At first I was downloading Ubuntu 12.10 using Windows Installer, but I cancelled it after just 2-3 minutes and dowloaded 32-Bit ISO (ubuntu-12.10-desktop-i386). Then I created bootable USB Stick (new HP 210 v210 w) using Pendrivelinux (Universal-USB-Installer-1.9.1.4). I Formatted D Drive. (Both by Windows & EaseUS) I've set boot priority correctly. But after getting message "Boot Error", I ran wubi.exe directly from USB drive. Now the message is "A previous installation was detected in D:\ubuntu. Please uninstall that before continuing." I formatted D: again and performed disk check, surface test using EaseUS. It shows no error or bad sectors. Formatted & checked my pendrive too. Directly ran .iso. But same error keeps coming. I found way around above problems, by copying extracted .iso on D:\ and installing Ubuntu using wubi.exe and though on boot it was shown with Windows 7, selecting it caused following error Try hd(0,0): NTFS5 : No wubildr Try hd(0,1): NTFS5 : So, I uninstalled it and Reeinstalled it Now installation fails at around 7mins saying " An error occurred. No space left on device. For more info please see log file " My D: is a 9 GB partition. (99% Free) Ubuntu Site 12.10 says it needs around 4.5 GB. Now Trying it by extendin D: to 10 GB... Got No wubildr. Please help. tdc2bdc

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• Ubuntu 11.10 Random reboots how to find root cause?

  - by Indigo42

  All, This issue started with 11.04, I upgraded to 11.10 this week in hopes it would correct it, but after a few days it happened again.. A few times a day, randomly, my monitors will go black and the machine will come back in the post screen and boot up again. Sometimes it boots up properly, sometimes it boots to disk scan (I understand why...the machine just died with a bunch of stuff open) and sometimes it takes several cycles of this to come up. I connected to the system with my laptop and tailed dmesg, syslog, kern.log, and Xorg.0.log. I also ran a cat /proc/kmesg. Nothing is showing up in any of these log files when it happens..it's just like someone has pulled the plug. I just got through running 4 hours of the memory test with no errors. I have a AMD Phenom 9850 Quad-Core Processor and Nvida 9500GT graphics card. This system has been stable for like 4 years. I'm thinking it might be a hardware problem, but how do I find out? Thanks,

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• Delete Ubuntu and Grub from PC (and BIOS unaccessible)

  - by Temitope

  I've really done a mess while upgrading 12.04 to 12.10, or my PC did, or ubuntu did, I can't really tell. The situation now is I have a dual booting machine, Windows 7 and ubuntu 12.10 -When turning on the PC, I can't access boot options, I've tried every thing, esc, f1 f8, f10 (I have a Hp pavilion) but all I can see is a short-lasting screen with three lines reading something like "error:files not found" or "link not found". So the PC turns to the Grub loader screen. This is already a BIG problem. It means I can't change boot order, and I'm diperate, since it doensn't seem that repairing my operating systems will bring my BIOS back. -If I chose Ubuntu in grup, it loades but then frezes on the desktop, I may be having problem with unity3d, or compiz, which was reported to be crashing the first times I started ubuntu. Now, after turning off and on the pc several times, no crash is reported again. Ubuntu just load my background image and nothing else. Not the side menu, not the header, nothing. Althogh the system seems "functioning", when I press the power button on the PC, for example, the normal shutdown dialog window appears. -If I chose Windows, Grubs tells me that something is not found, and to press any key to continue; I do it and then Windows loads perfectly. What I now want to do is 1- use EasyBSD to change boot order and boot Windows partition first 2- delete the ubuntu partitions from within windows disk manager What I except happening is that My PC turns to, or near to factory booting settings: I press the power button and Windows loads without asking me nothing I have acess to all my hardisk from withing windows Is that what will really happen? Are there danger I'm not seeing? What I don't except happening is The BIOS access key return functioning How could I eventually solve this? I would like to reinstall Ubuntu, 32 bit version this time.

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• The [2] table entry '[3]' has no associated entry in the Media table. (error 2602)

  - by derekf

  Coworker started getting the above message in the event log and as dialog during install.  Argument [2] was File and argument [3] was a specific file. Error dialog read   Product: (app name) -- The installer has encountered an unexpected error installing this package. This may indicate a problem with this package. The error code is 2602. Package was a vendor-provided MSI that had been installed administratively, and then a patch (.msp) applied to the administrative install point. With some digging we found that the MSI still had the entries in the media table pointing at the CAB files, and that there were several files at the end of the sequence that did not have corresponding entries in the Media table (last sequence 990 in Media table, last entry in File table had sequence 994).  Attributes on files in the File table all had the msidbFileAttributesCompressed (&16384) attribute set, so they were all expecting to be within the CAB files, but since this was an admin install there were no CAB files. Resolved by clearing the Media table (replace with a single entry: Disk ID 1, LastSequence 994) and going through the file table and subtracting 8192 from each entry to mark files as not compressed.  Tested and worked.

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• C programming multiple storage backends

  - by ahjmorton

  I am starting a side project in C which requires multiple storage backends to be driven by a particular piece of logic. These storage backends would each be linked with the decision of which one to use specified at runtime. So for example if I invoke my program with one set of parameters it will perform the operations in memory but if I change the program configuration it would write to disk. The underlying idea is that each storage backend should implement the same protocol. In other words the logic for performing operations should need to know which backend it is operating on. Currently the way I have thought to provide this indirection is to have a struct of function pointers with the logic calling these function pointers. Essentially the struct would contain all the operations needed to implement the higher level logic E.g. struct Context { void (* doPartOfDoOp)(void) int (* getResult)(void); } //logic.h void doOp(Context * context) { //bunch of stuff context->doPartOfDoOp(); } int getResult(Context * context) { //bunch of stuff return context->getResult(); } My questions is if this way of solving the problem is one a C programmer would understand? I am a Java developer by trade but enjoy using C/++. Essentially the Context struct provides an interface like level of indirection. However I would like to know if there is a more idiomatic way of achieving this.

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• ?Oracle DB 11gR2 ?????????????????????????????????????!

  - by Yuichi.Hayashi

  Oracle Database????????????????????????????????????????????????????????????????????????·?????????????????????? ?????????/?????????????????????????????????????11g R2??????????????! ????????? Oracle Database?????????????????????????????????????CPU????·???????????????????????????????????????????????? ?????????????????????????????????????????????? ??????????????????????????????(?????????????·???????)????????????????????????????????????????????????????·?????????????????????????????????????????? ?????????????????????????????????????? ????11g R2??????????????????????????????????????????????? ????????????????? ???????????????????????????????Oracle?????????????????????????????????????? ???????????????????CPU????????????????????????????????????????! Oracle Database????????????????????????????? Oracle ?????? - ??(??), ??, ????? Database Smart Flash Cache Oracle Database??Hard Disk Drive(HDD)???????????????????????SQL??????????????????????????????????????????????????·?????·?????100%??????????????????????????????? ?????????????·??????????CPU????·???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????(????·?????·????????)???????·??????????????????????????? HDD????????????????(???)?????????????????????HDD??IO?????????????????????????? ?????????Solid State Drive/Device(SSD)??? SSD?HDD??????????????????????????????????OLTP????????·??????????????????????????????????????????????????????SSD???????????????????????????? ???11g R2???????????SSD???????????Database Smart Flash Cache????????????Database Smart Flash Cache??????·???????????????????????????(Hot Data)?Oracle?????SSD??????????? ????????!?????????SSD????????????????????SSD????????????????????? SSD???????????????????????????????????? Database Smart Flash Cache?????????????????????? SSD???Oracle???: Database Smart Flash Cache - ??(??), ??, ????? ?????????? ? ???????????????/????????????????!? ? ???????????????????????????????????!?

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• Azure git deployment - missing references in 2nd assembly

  - by Dan

  I'm trying to setup Bitbucket deployment to an Azure website. I successfully have Bitbucket and Azure linked, but when I push to Bitbucket, I get the following error on the Azure site: If I click on 'View Log', it shows the following compile errors: D:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(1578,5): warning MSB3245: Could not resolve this reference. Could not locate the assembly "System.Web.Mvc, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL". Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors. [C:\DWASFiles\Sites\<projname>\VirtualDirectory0\site\repository\<projname>.Common\<projname>.Common.csproj] D:\Windows\Microsoft.NET\Framework\v4.0.30319\Microsoft.Common.targets(1578,5): warning MSB3245: Could not resolve this reference. Could not locate the assembly "WebMatrix.WebData, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL". Check to make sure the assembly exists on disk. If this reference is required by your code, you may get compilation errors. [C:\DWASFiles\Sites\<projname>\VirtualDirectory0\site\repository\<projname>.Common\<projname>.Common.csproj] CustomMembershipProvider.cs(5,7): error CS0246: The type or namespace name 'WebMatrix' could not be found (are you missing a using directive or an assembly reference?) [C:\DWASFiles\Sites\<projname>\VirtualDirectory0\site\repository\<projname>.Common\<projname>.Common.csproj] CustomMembershipProvider.cs(9,38): error CS0246: The type or namespace name 'ExtendedMembershipProvider' could not be found (are you missing a using directive or an assembly reference?) [C:\DWASFiles\Sites\<projname>\VirtualDirectory0\site\repository\<projname>.Common\<projname>.Common.csproj] Models\AccountModels.cs(3,18): error CS0234: The type or namespace name 'Mvc' does not exist in the namespace 'System.Web' (are you missing an assembly reference?) [C:\DWASFiles\Sites\<projname>\VirtualDirectory0\site\repository\<projname>.Common\<projname>.Common.csproj] CustomMembershipProvider.cs(198,37): error CS0246: The type or namespace name 'OAuthAccountData' could not be found (are you missing a using directive or an assembly reference?) [C:\DWASFiles\Sites\<projname>\VirtualDirectory0\site\repository\<projname>.Common\<projname>.Common.csproj] Models\AccountModels.cs(40,10): error CS0246: The type or namespace name 'Compare' could not be found (are you missing a using directive or an assembly reference?) [C:\DWASFiles\Sites\<projname>\VirtualDirectory0\site\repository\<projname>.Common\<projname>.Common.csproj] Models\AccountModels.cs(40,10): error CS0246: The type or namespace name 'CompareAttribute' could not be found (are you missing a using directive or an assembly reference?) [C:\DWASFiles\Sites\<projname>\VirtualDirectory0\site\repository\<projname>.Common\<projname>.Common.csproj] Models\AccountModels.cs(73,10): error CS0246: The type or namespace name 'Compare' could not be found (are you missing a using directive or an assembly reference?) [C:\DWASFiles\Sites\<projname>\VirtualDirectory0\site\repository\<projname>.Common\<projname>.Common.csproj] Models\AccountModels.cs(73,10): error CS0246: The type or namespace name 'CompareAttribute' could not be found (are you missing a using directive or an assembly reference?) [C:\DWASFiles\Sites\<projname>\VirtualDirectory0\site\repository\<projname>.Common\<projname>.Common.csproj] Note that these compile errors are against another assembly in my project (the assembly where I put the business logic). When Googling, the only mention I found was about having to set the "local copy" flag to true for those references. I've tried this, but still got the same errors. This all compiles fine locally. Any ideas?

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• Random Complete System Unresponsiveness Running Mathematical Functions

  - by Computer Guru

  I have a program that loads a file (anywhere from 10MB to 5GB) a chunk at a time (ReadFile), and for each chunk performs a set of mathematical operations (basically calculates the hash). After calculating the hash, it stores info about the chunk in an STL map (basically <chunkID, hash>) and then writes the chunk itself to another file (WriteFile). That's all it does. This program will cause certain PCs to choke and die. The mouse begins to stutter, the task manager takes 2 min to show, ctrl+alt+del is unresponsive, running programs are slow.... the works. I've done literally everything I can think of to optimize the program, and have triple-checked all objects. What I've done: Tried different (less intensive) hashing algorithms. Switched all allocations to nedmalloc instead of the default new operator Switched from stl::map to unordered_set, found the performance to still be abysmal, so I switched again to Google's dense_hash_map. Converted all objects to store pointers to objects instead of the objects themselves. Caching all Read and Write operations. Instead of reading a 16k chunk of the file and performing the math on it, I read 4MB into a buffer and read 16k chunks from there instead. Same for all write operations - they are coalesced into 4MB blocks before being written to disk. Run extensive profiling with Visual Studio 2010, AMD Code Analyst, and perfmon. Set the thread priority to THREAD_MODE_BACKGROUND_BEGIN Set the thread priority to THREAD_PRIORITY_IDLE Added a Sleep(100) call after every loop. Even after all this, the application still results in a system-wide hang on certain machines under certain circumstances. Perfmon and Process Explorer show minimal CPU usage (with the sleep), no constant reads/writes from disk, few hard pagefaults (and only ~30k pagefaults in the lifetime of the application on a 5GB input file), little virtual memory (never more than 150MB), no leaked handles, no memory leaks. The machines I've tested it on run Windows XP - Windows 7, x86 and x64 versions included. None have less than 2GB RAM, though the problem is always exacerbated under lower memory conditions. I'm at a loss as to what to do next. I don't know what's causing it - I'm torn between CPU or Memory as the culprit. CPU because without the sleep and under different thread priorities the system performances changes noticeably. Memory because there's a huge difference in how often the issue occurs when using unordered_set vs Google's dense_hash_map. What's really weird? Obviously, the NT kernel design is supposed to prevent this sort of behavior from ever occurring (a user-mode application driving the system to this sort of extreme poor performance!?)..... but when I compile the code and run it on OS X or Linux (it's fairly standard C++ throughout) it performs excellently even on poor machines with little RAM and weaker CPUs. What am I supposed to do next? How do I know what the hell it is that Windows is doing behind the scenes that's killing system performance, when all the indicators are that the application itself isn't doing anything extreme? Any advice would be most welcome.

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• Help in building an 16 bit os

  - by Barshan Das

  I am trying to build an old 16 bit dos like os. My bootloader code: ; This is not my code. May be of Fritzos. I forgot the source. ORG 7c00h jmp Start drive db 0 msg db " Loader Initialization",0 msg2 db "ACos Loaded",0 print: lodsb cmp al, 0 je end mov ah, 0Eh int 10h jmp print end: ret Start: mov [ drive ], dl ; Get the floppy OS booted from ; Update the segment registers xor ax, ax ; XOR ax mov ds, ax ; Mov AX into DS mov si,msg call print ; Load Kernel. ResetFloppy: mov ax, 0x00 ; Select Floppy Reset BIOS Function mov dl, [ drive ] ; Select the floppy ADos booted from int 13h ; Reset the floppy drive jc ResetFloppy ; If there was a error, try again. ReadFloppy: mov bx, 0x9000 ; Load kernel at 9000h. mov ah, 0x02 ; Load disk data to ES:BX mov al, 17 ; Load two floppy head full's worth of data. mov ch, 0 ; First Cylinder mov cl, 2 ; Start at the 2nd Sector to load the Kernel mov dh, 0 ; Use first floppy head mov dl, [ drive ] ; Load from the drive kernel booted from. int 13h ; Read the floppy disk. jc ReadFloppy ; Error, try again. ; Clear text mode screen mov ax, 3 int 10h ;print starting message mov si,msg2 call print mov ax, 0x0 mov ss, ax mov sp, 0xFFFF jmp 9000h ; This part makes sure the bootsector is 512 bytes. times 510-($-$$) db 0 ;bootable sector signature dw 0xAA55 My example kernel code: asm(".code16\n"); void putchar(char); int main() { putchar('A'); return 0; } void putchar(char val) { asm("movb %0, %%al\n" "movb $0x0E, %%ah\n" "int $0x10\n" : :"r"(val) ) ; } This is how I compile it : nasm -f bin -o ./bin/boot.bin ./source/boot.asm gcc -nostdinc -fno-builtin -I./include -c -o ./bin/kernel.o ./source/kernel.c ld -Ttext=0x9000 -o ./bin/kernel.bin ./bin/kernel.o -e 0x0 dd if=/dev/zero of=./bin/empty.bin bs=1440K count=1 cat ./bin/boot.bin ./bin/kernel.bin ./bin/empty.bin|head -c 1440K > ./bin/os rm ./bin/empty.bin and I run it in virtual machine. When I make the putchar function ( in kernel code ) for constant value ....i.e like this: void putchar() { char val = 'A'; asm("movb %0, %%al\n" "movb $0x0E, %%ah\n" "int $0x10\n" : :"r"(val) ) ; } then it works fine. But when I pass argument to it ( That is in the previous code ) , then it prints a space for any character. What should I do?

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• Windows DD-esque implementation in Qt 5

  - by user1777667

  I'm trying to get into Qt and as a project I want to try and pull a binary image from a hard drive in Windows. This is what I have: QFile dsk("//./PhysicalDrive1"); dsk.open(QIODevice::ReadOnly); QByteArray readBytes = dsk.read(512); dsk.close(); QFile img("C:/out.bin"); img.open(QIODevice::WriteOnly); img.write(readBytes); img.close(); When I run it, it creates the file, but when I view it in a hex editor, it says: ëR.NTFS ..........ø..?.ÿ.€.......€.€.ÿç......UT..............ö.......ì§á.Íá.`....ú3ÀŽÐ¼.|ûhÀ...hf.ˈ...f.>..NTFSu.´A»ªUÍ.r..ûUªu.÷Á..u.éÝ..ƒì.h..´HŠ...‹ô..Í.ŸƒÄ.žX.rá;...uÛ£..Á.....Z3Û¹. +Èfÿ.......ŽÂÿ...èK.+Èwï¸.»Í.f#Àu-f.ûTCPAu$.ù..r..h.».hp..h..fSfSfU...h¸.fa..Í.3À¿(.¹Ø.üóªé_...f`..f¡..f.....fh....fP.Sh..h..´BŠ.....‹ôÍ.fY[ZfYfY..‚..fÿ.......ŽÂÿ...u¼..faàø.è.. û.è..ôëý´.‹ð¬<.t.´.»..Í.ëòÃ..A disk read error occurred...BOOTMGR is missing...BOOTMGR is compressed...Press Ctrl+Alt+Del to restart...Œ©¾Ö..Uª Is there a better way of doing this? I tried running it as admin, but still no dice. Any help would be much appreciated. Update: I changed the code a bit. Now if I specify a dd images as the input it writes the image perfectly, but when I try to use a disk as the input it only writes 0x00. QTextStream(stdout) << "Start\n"; QFile dsk("//./d:"); //QFile dsk("//./PhysicalDrive1"); //QFile dsk("//?/Device/Harddisk1/Partition0"); //QFile dsk("//./Volume{e988ffc3-3512-11e3-99d8-806e6f6e6963}"); //QFile dsk("//./Volume{04bbc7e2-a450-11e3-a9d9-902b34d5484f}"); //QFile dsk("C:/out_2.bin"); if (!dsk.open(QIODevice::ReadOnly)) qDebug() << "Failed to open:" << dsk.errorString(); qDebug() << "Size:" << dsk.size() << "\n"; // Blank out image file QFile img(dst); img.open(QIODevice::WriteOnly); img.write(0); img.close(); // Read and write operations while (!dsk.atEnd()) { QByteArray readBytes = dsk.readLine(); qDebug() << "Reading: " << readBytes.size() << "\n"; QFile img(dst); if (!img.open(QIODevice::Append)) qDebug() << "Failed to open:" << img.errorString(); img.write(readBytes); } QTextStream(stdout) << "End\n"; I guess the real problem I'm having is how to open a volume with QFile in Windows. I tried a few variants, but to no avail.

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• Ubuntu Control Center Makes Using Ubuntu Easier

  - by Vivek

  Users who are new to Ubuntu might find it somewhat difficult to configure. Today we take a look at using Ubuntu Control Center which makes managing different aspects of the system easier. About Ubuntu Control Center A lot of utilities and software has been written to work with Ubuntu. Ubuntu Control Center is one such cool utility which makes it easy for configuring Ubuntu. The following is a brief description of Ubuntu Control Center: Ubuntu Control Center or UCC is an application inspired by Mandriva Control Center and aims to centralize and organize in a simple and intuitive form the main configuration tools for Ubuntu distribution. UCC uses all the native applications already bundled with Ubuntu, but it also utilize some third-party apps like “Hardinfo”, “Boot-up Manager”, “GuFW” and “Font-Manager”. Ubuntu Control Center Here we look at installation and use of Ubuntu Control Center in Ubuntu 10.04. First we have to satisfy some dependencies. You will need to install Font-Manager and jstest-gtk (link below)…before installing Ubuntu Control Center (UCC). Click the Install Package button. You’ll be prompted to enter in your admin password for each installation package. Installation is successful…close out of the screen. Download and install Font-Manager…again you’ll need to enter in your password to complete installation.   Once you have installed the two dependencies, you are all set to install Ubuntu Control Center (link below), double click the downloaded Ubuntu Control Center deb file to install it. Once installed you can find it under Applications \ System Tools \ UCC. Once you launch it you can start managing your system, software, hardware, and more.   You can easily control various aspects of your Ubuntu System using Ubuntu Control Center. Here we look at configuring the firewall under Network and Internet.     UCC allows easy access for configuring several aspects of your system. Once you install UCC you’ll see how easy it is to configure your Ubuntu system through an intuitive clean graphical interface. If you’re new to Ubuntu, using UCC can help you in setting up your system how you like in a user friendly way. Home Page of UCC http://code.google.com/p/ucc/ Links Download Font-Manager ManagerDownload jstest-gtkUbuntu Control Center (UCC) Similar Articles Productive Geek Tips Adding extra Repositories on UbuntuAllow Remote Control To Your Desktop On UbuntuAssign a Hotkey to Open a Terminal Window in UbuntuInstall VMware Tools on Ubuntu Edgy EftInstall Monodevelop on Ubuntu Linux TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Snagit 10 How to Forecast Weather, without Gadgets Outlook Tools, one stop tweaking for any Outlook version Zoofs, find the most popular tweeted YouTube videos Video preview of new Windows Live Essentials 21 Cursor Packs for XP, Vista & 7 Map the Stars with Stellarium

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• Developer’s Life – Every Developer is a Batman

  - by Pinal Dave

  Batman is one of the darkest superheroes in the fantasy canon.  He does not come to his powers through any sort of magical coincidence or radioactive insect, but through a lot of psychological scarring caused by witnessing the death of his parents.  Despite his dark back story, he possesses a lot of admirable abilities that I feel bear comparison to developers. Batman has the distinct advantage that his alter ego, Bruce Wayne is a millionaire (or billionaire in today’s reboots).  This means that he can spend his time working on his athletic abilities, building a secret lair, and investing his money in cool tools.  This might not be true for developers (well, most developers), but I still think there are many parallels. So how are developers like Batman? Well, read on my list of reasons. Develop Skills Batman works on his skills.  He didn’t get the strength to scale Gotham’s skyscrapers by inheriting his powers or suffering an industrial accident.  Developers also hone their skills daily.  They might not be doing pull-ups and scaling buldings, but I think their skills are just as impressive. Clear Goals Batman is driven to build a better Gotham.  He knows that the criminal who killed his parents was a small-time thief, not a super villain – so he has larger goals in mind than simply chasing one villain.  He wants his city as a whole to be better.  Developers are also driven to make things better.  It can be easy to get hung up on one problem, but in the end it is best to focus on the well-being of the system as a whole. Ultimate Teamplayers Batman is the hero Gotham needs – even when that means appearing to be the bad guys.  Developers probably know that feeling well.  Batman takes the fall for a crime he didn’t commit, and developers often have to deliver bad news about the limitations of their networks and servers.  It’s not always a job filled with glory and thanks, but someone has to do it. Always Ready Batman and the Boy Scouts have this in common – they are always prepared.  Let’s add developers to this list.  Batman has an amazing tool belt with gadgets and gizmos, and let’s not even get into all the functions of the Batmobile!  Developers’ skills might be the knowledge and skills they have developed, not tools they can carry in a utility belt, but that doesn’t make them any less impressive. 100% Dedication Bruce Wayne cultivates the personality of a playboy, never keeping the same girlfriend for long and spending his time partying.  Even though he hides it, his driving force is his deep concern and love for his friends and the city as a whole.  Developers also care a lot about their company and employees – even when it is driving them crazy.  You do your best work when you care about your job on a personal level. Quality Output Batman believes the city deserves to be saved.  The citizens might have a love-hate relationship with both Batman and Bruce Wayne, and employees might not always appreciate developers.  Batman and developers, though, keep working for the best of everyone. I hope you are all enjoying reading about developers-as-superheroes as much as I am enjoying writing about them.  Please tell me how else developers are like Superheroes in the comments – especially if you know any developers who are faster than a speeding bullet and can leap tall buildings in a single bound. Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL Tagged: Developer, Superhero

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• SQLAuthority News – Author Visit – SQL Server 2008 R2 Launch

  - by pinaldave

  June 11, 2010 was a wonderful day because I attended the very first SQL Server 2008 R2 Launch event held by Microsoft at Mumbai. I traveled to Mumbai from my home town, Ahmedabad. The event was located at one of the best hotels in Mumbai,”The Leela”. SQL Server R2 Launch was an evening event that had a few interesting talks. SQL PASS is associated with this event as one of the partners and its goal is to increase the awareness of the Community about SQL Server. I met many interesting people and had a great networking opportunity at the event. This event was kicked off with an awesome laser show and a “Welcome” video, which was followed by a Microsoft Executive session wherein there were several interesting demo. The very first demo was about Powerpivot. I knew beforehand that there will be Powerpivot demos because it is a very popular subject; however, I was really hoping to see other interesting demos from SQL Server 2008 R2. And believe me; I was happier to see the later demos. There were demos from SQL Server Utility Control Point, as well an integration of Bing Map with Reporting Servers. I really enjoyed the interactive and informative session by Shivaram Venkatesh. He had excellent presentation skills as well as ample technical knowledge to keep the audience attentive. I really liked his presentations skills wherein he did not read the whole slide deck; rather, he picked one point and using that point he told the story of the whole slide deck. I also enjoyed my conversation with Afaq Choonawala, who is one of the “gem guys” in Microsoft. I also want to acknowledge Ashwin Kini and Mohit Panchal for their excellent support to this event. Mumbai IT Pro is a user group which you can really count on for any kind of help. After excellent demos and a vibrant start of the event, all the audience was jazzed up. There were two vendors’ sessions right after the first session. Intel had 15 minutes to present; however, Intel’s representative, who had good knowledge of the subject, had nearly 30+ slides in his presentation, so he had to rush a bit to cover the whole slide deck. Intel presentations were followed up by another vendor presentation from NetApp. I have previously heard about this tool. After I saw the demo which did not work the first time the Net App presenter demonstrated it, I started to have a doubt on this product. I personally went to clarify my doubt to the demo booth after the presentation was over, but I realize the NetApp presenter or booth owner had absolutely a POOR KNOWLEDGE of SQL Server and even of their own NetApp product. The NetApp people tried to misguide us and when we argued, they started to say different things against what they said earlier. At one point in their presentation, they claimed their application does something very fast, which did not really happen in front of all the audience. They blamed SQL Server R2 DBCC CHECKDB command for their product’s failed demonstration. I know that NetApp has many great products; however, this one was not conveyed clearly and even created a negative impression to all of us. Well, let us not judge the potential, fun, education and enigma of the launch event through a small glitch. This event was jam-packed and extremely well-received by everybody who attended it. As what I said, average demos and good presentations by MS folks were really something to cheer about. Any launch event is considered as successful if it achieves its goal to excite users with its cutting edge technology; just like this event that left a very deep impression on me. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Author Visit, SQLAuthority News, T SQL, Technology Tagged: PASS, SQLPASS

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• BizTalk 2009 - BizTalk Benchmark Wizard: Installation

  - by StuartBrierley

  As previously detailed, I have completed a single server installation of BizTalk Server 2009 standard on my development laptop; a MacBook Pro Core2Duo running at 2.16Ghz with 2Gb of RAM.  Following this I also posted on my use of the BizTalk Server Best Practices Anaylser and how to configure the BizTalk SQL Server Jobs.  All of which means that I should have some confidence that I have a decent working BizTalk Server 2009 environment, Next I thought that it would be a good idea to try and get some idea of how this setup performs by carrying out some baseline tests that can then be replicated on the test and live servers. The aim of this would be to allow confident predictions to be made of how any solutions developed on a single "server" installation may be expected to perform when deployed to these multi-server BizTalk Server 2009 standard installations. The BizTalk Benchmark Wizard would seem to be the perfect tool for the job. The BizTalk Benchmark Wizard is a ultility that can be used to gain some validation of a BizTalk installation, giving a level of guidance on whether it is performing as might be expected. This utility should be used after BizTalk Server has been installed and before any solutions are deployed to the environment.  This will ensure that you are getting consistent and clean results from the BizTalk Benchmark Wizard. The BizTalk Benchmark Wizard applies load to the BizTalk Server environment under a choice of specific scenarios. During these scenarios performance counter information is collected and assessed against statistics that are appropriate to the BizTalk Server environment: "The executed scenarios may or may not be relative to any realistic scenario, and is only intended for testing. The BizTalk Benchmark Wizard has been developed in relation to the BizTalk Server 2009 Scale Out Testing Study. More information about the study can be found here: http://msdn.microsoft.com/en-us/library/ee377068(BTS.10).aspx" After downloading and installing the wizard you will need set up the Hosts, Instances and Adapter handlers.  This is done by running a script file using the “cscript” detailed below.  To do this you will need to open a command prompt window and navigate to the script folder; assuming the default installation location this would be C:\Program Files\Blogical\BizTalk Benchmark Wizard\Artefacts\BizTalk. In this folder you should find an InstallHosts.vbs file which can be executed using the following parameters: NTGroupName - The name of the Windows NT group. UserName – The name of the user account running the service instances. Password – The password of the user account running the service instances. Receive Host – The name of the server where you want to run the receive host instance.  Send Host - The name of the server where you want to run the sen host instance. Processing Host - The name of the server where you want to run the process host instance. By default the script is set up for 64 bit hosts, so if you are running in 32 bit environment make sure that you change the following line in the script before continuing: from:   objHS.IsHost32BitOnly = False to:    objHS.IsHost32BitOnly = True If you have a single box installation, your script command might look like this: cscript InstallHosts.vbs "BizTalk Application Users" “\MyUser” “MyPassword” “BtsServer1” “BtsServer1” “BtsServer1” If you have a multi server installation, your script command might look like this: cscript InstallHosts.vbs "MyDomain\BizTalk Application Users" “MyDomain\MyUser” “MyPassword” “BtsServer1” “BtsServer2” “BtsServer2” Running this script will create: Three hosts (BBW_RxHost, BBW_TxHost and BBW_PxHost) Three host instances One send and one receive adapter handler for the WCF NetTcp adapter. You will then need to import the BizTalk MSI via the BizTalk Administration Console.  Open the BizTalk Administration Console, point to the “Applications” node and import the BizTalk Benchmark Wizard.msi found in the same folder as the script above. This will create a “BizTalk Benchmark Wizard” application along with all ports and orchestrations needed. To finish the installation you will need to run the BizTalk Benchmark Wizard.msi on all BizTalk servers to add the assemblies to the Global Assembly Cache (GAC). Next I will look at running the BizTalk Benchmark Wizard.

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• Framework 4 Features: Support for Timed Jobs

  - by Anthony Shorten

  One of the new features of the Oracle Utilities Application Framework V4 is the ability for the batch framework to support Timed Batch. Traditionally batch is associated with set processing in the background in a fixed time frame. For example, billing customers. Over the last few versions their has been functionality required by the products required a more monitoring style batch process. The monitor is a batch process that looks for specific business events based upon record status or other pieces of data. For example, the framework contains a fact monitor (F1-FCTRN) that can be configured to look for specific status's or other conditions. The batch process then uses the instructions on the object to determine what to do. To support monitor style processing, you need to run the process regularly a number of times a day (for example, every ten minutes). Traditional batch could support this but it was not as optimal as expected (if you are a site using the old Workflow subsystem, you understand what I mean). The Batch framework was extended to add additional facilities to support times (and continuous batch which is another new feature for another blog entry). The new facilities include: The batch control now defines the job as Timed or Not Timed. Non-Timed batch are traditional batch jobs. The timer interval (the interval between executions) can be specified The timer can be made active or inactive. Only active timers are executed. Setting the Timer Active to inactive will stop the job at the next time interval. Setting the Timer Active to Active will start the execution of the timed job. You can specify the credentials, language to view the messages and an email address to send the a summary of the execution to. The email address is optional and requires an email server to be specified in the relevant feature configuration. You can specify the thread limits and commit intervals to be sued for the multiple executions. Once a timer job is defined it will be executed automatically by the Business Application Server process if the DEFAULT threadpool is active. This threadpool can be started using the online batch daemon (for non-production) or externally using the threadpoolworker utility. At that time any batch process with the Timer Active set to Active and Batch Control Type of Timed will begin executing. As Timed jobs are executed automatically then they do not appear in any external schedule or are managed by an external scheduler (except via the DEFAULT threadpool itself of course). Now, if the job has no work to do as the timer interval is being reached then that instance of the job is stopped and the next instance started at the timer interval. If there is still work to complete when the interval interval is reached, the instance will continue processing till the work is complete, then the instance will be stopped and the next instance scheduled for the next timer interval. One of the key ways of optimizing this processing is to set the timer interval correctly for the expected workload. This is an interesting new feature of the batch framework and we anticipate it will come in handy for specific business situations with the monitor processes.

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