Desktop Heap Encountered Error While Allocating Session Memory
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Server General Forum Question 0 Sign in to vote HI All, I have been facing a very desktop heap size windows server 2008 r2 serious issue with Wk3 server 32 bit with SP2 server. It is a dell power edge 1955 physical server with 16 GB RAM and 140 GB HDD usable out of memory error windows 7 space after RAID 1. Issue: System performance is too slow Symantec netbackup backup is extremely slow, may take 1 year to finish 100 GB I/O writes is too high for services.exe (Av. value showing : 11,769,394,454 Bytes) Server running with applications like SQL 2008, IIS, IIS resource tool, IBM websphereMQ, Symantec Endpoint protection client SystemEvent Logs
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is filling with Event ID :333 I have restarted the server but the I/O write will start to increase gradually and will show a big value after some days and server performance will be too bad. I have resized page file size but no luck. I have noticed some events, which i am getting once i restarted the server. PopUp: winlogon.exe - system error the desktop heap encountered an error while allocating session memory. there is more information in the system event log. Events: Event Log System Event Source Win32k Event ID 1046 Severity Error Description HKLM\SYSTEM\CurrentControlSet\Control\SessionManager\SubSystems\Windows registry contains a substring SharedSection=. The values for this SharedSection are too big. The Default values are SharedSection=10243072512 Please change the registry values for Windows to load up properly. Checkout my current value: %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=4096,8192,2048 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ProfileControl=Off MaxRequestThreads=64 please help me to assign proper value for Windows SharedSection, i already read some MS article anyway, ideas and suggestions aregreatly appreciable. ========================= I already went through http://social.technet.microsoft.com/Foru
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Mobile Networking Storage TrainingOnline Training IT/Dev Connections Webcasts VIP Library Digital Magazine Archives InfoCentersIT Innovators Mobile Computing Business Now Desktop VDI All About Converged Architecture Advertisement Home https://social.technet.microsoft.com/Forums/windowsserver/en-US/14be2a9b-91d6-49ba-8926-4838a6e0e88d/high-io-write-in-windows-2003-server?forum=winservergen > Windows > Windows Client > Conquer Desktop Heap Problems Conquer Desktop Heap Problems Diagnose and solve problems that limit the memory available to Windows desktop sessions Apr 12, 2009 Michael Morales | Windows IT Pro EMAIL Tweet Comments 0 Advertisement Executive Summary:Windows XP, Windows Server 2003, and earlier Windows OSs are prone to problems with http://windowsitpro.com/windows-client/conquer-desktop-heap-problems desktop heap—memory allocated to Windows session views. Learn how to diagnose and solve desktop heap problems in XP, Windows 2003, and earlier, as well as Windows Vista and Windows Server 2008, using tools such as Desktop Heap Monitor 8.1 (Dheapmon) and registry-setting changes. As an administrator, you've probably run into a desktop heap problem (e.g., an out of memory error message or failed application startup) and know firsthand how tough this type of problem is to solve. Part of the difficulty lies in first identifying that your symptom is related to an exhaustion of desktop heap memory. Another challenge is discovering which process or service is consuming the greatest amount of desktop heap, then determining what registry parameter to change to work around the problem. This month, I'll show how to quickly identify whether your system is running out of desktop heap. (See the box below for a list of common symptoms of a desktop heap problem.) Then I'll give you some tools a
OS and Software' started by ikovac, Oct 9, 2007. Thread Status: Not open for further replies. ikovac Cooler and faster... NBR Reviewer Reputations: 872 Messages: 1,637 Likes Received: 0 Trophy Points: 55 This fix enables Windows opening many more windows http://forum.notebookreview.com/threads/fix-vista-xp-server-2003-desktop-heap-exhausted-windows-cannot-open-a-new-window-app-tab-menu-etc.177272/ and start more processes. This is for people with lots of ram that usually open many windows (or IE tabs for example) and seldom restart their notebooks. I use my 2GB ram a lot - I usually run multiple apps at once including Dreamweaver (likes memory and it has a memory leak btw), Fireworks, IE7 with 10+ tabs, Word (few windows), Access, WMP + usual stuff like Windows explorers, winrar, skype, gtalk etc... Now and then I also out of play games like fear and cs:s (steam). All in all I usually use around 1,5GB ram and I don't restart often, but put notebook to hybrid sleep instead. And it is used like that for weeks. It is a very good practice since comp wakes up in seconds with my programs already started and ready, but it has one disadvantage - it sometimes uses all of Windows Desktop Heap resources meaning sometimes I cannot open a new out of memory tab, start new app or even get a rightclick menu! I need to close some window in order to free some of the resources. If you go to the Event Viewer/System you would find something like this: "A desktop heap allocation failed". It has nothing to do with free ram! You can read an exellent article here: http://blogs.msdn.com/ntdebugging/archive/2007/01/04/desktop-heap-overview.aspx Microsoft KB: The system has run out of desktop heap. Every desktop object on the system has a desktop heap associated with it. The desktop object uses the heap to store menus, hooks, strings, and windows. The system allocates desktop heap from a system-wide 48-MB buffer. In addition to desktop heaps, printer, and font drivers also use this buffer.Click to expand... It happens on XP and Windows Server 2003 too. Vista is not an exception. 64 bit versions seem to have much more resources ready for allocation. So how to fix it? Fortunately heap size can be adjusted, but in registry. All registry edits bring a dose of warning and danger. Please be careful and read the following instructions: 1. Click on Start - and in search type regedit and press enter. 2. Go to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\SubSystems\ 3. Make backup of your key! Click on File menu and choose Export. Give it a name and choose the destination. Click Save and there it is - a backup of your SubSystems reg key.