If it's a 32bit application, then the only different on Win2k8 R2, as far as the application's virtual memory address space is concerned, is that it can now see 4GB of memory, rather than 2GB.
64bit OS allows the OS to address large amounts of memory, as well as 64 user mode apps. Cheers Ken From: Damien Solodow [mailto:[email protected]] Sent: Saturday, 10 December 2011 3:33 AM To: NT System Admin Issues Subject: RE: Memory Fragmentation Since 2008 R2 is a 64bit OS, this is likely a non-issue. DAMIEN SOLODOW Systems Engineer 317.447.6033 (office) 317.447.6014 (fax) HARRISON COLLEGE From: Dave Vantine [mailto:[email protected]]<mailto:[mailto:[email protected]]> Sent: Friday, December 09, 2011 2:27 PM To: NT System Admin Issues Subject: Memory Fragmentation We are in the process of migrating a 3rd party application from Win 2003 to Win 2008 R2. The application that likes to have larger amounts of contiguos memory. In the past we had an issue with this and I was able to address by following KB http://support.microsoft.com/kb/315407. This added a Registry key HeapDecommitFreeBlockThreshold and set it to 262144. This was suppose to lessen or avoid virtual address fragmentation I have tried to research this further with respect to Win 2008 R2 to see if this is no longer something that is pertinent or needs to be addressed within the registry as Microsoft may have changed how it deallocates memory. Any recommendations on whether this is no longer necessary in 2008 or is it something that I should still be concerned with and add this registry setting. Thanks -Dave Vantine -- Thanks Dave Vantine ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected]<mailto:[email protected]> with the body: unsubscribe ntsysadmin ~ Finally, powerful endpoint security that ISN'T a resource hog! ~ ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/> ~ --- To manage subscriptions click here: http://lyris.sunbelt-software.com/read/my_forums/ or send an email to [email protected] with the body: unsubscribe ntsysadmin
