System cache and memory use.

HCL Notes/Domino 8.5 Forum (includes Notes Traveler)

Subject:

Hi Wayde,

Could be this ?

http://www-01.ibm.com/support/docview.wss?uid=swg21451154 which refers to http://support.microsoft.com/kb/974609
or search for "Windows6.0-KB974609-x64"

My setup was almost the same Windows 64 bits and Domino 8.5.2 FP1.

After some dayes or after TSM full backup the server starts swapping a lot. Getting very slow.

Page Faults ( non-cached memory reads) is growing on new processes.

My statrep is showing Platform.Memory.RAM.PctUtil is about 63 %, just after OS reboot, but steady growing.

Sysinternals RamMap is showing a huge memmory allocation on "Mapped File".
With 9.3 GB of memory, Mapped files are using about 5 GB, 2.5 GB as Active and 2.5 GB standby.

See also this "Still with all the fixes the file-system cache can become very ineffective":
http://blog.nashcom.de/nashcomblog.nsf/dx/new-performance-problem-with-domino-on-windows-2008-64bit.htm?opendocument&comments
dbcache flush on server, same result.
http://www-01.ibm.com/support/docview.wss?uid=swg21427348

The prolem is the OS system cache getting very huge. It's trying to caching a lot of files in memory.
When the amount of data is reaching about 500 Gb or server running for a long time then problems occur.
Installing the Domino fix don't solve the problem, backup or anti vira SW is also triggering it.

BR
Mov V Hansen

Feedback response number WEBB8NHGMS created by ~Rebecca Kijipyteretsi on 11/11/2011

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Windows 2008 64 Bit (~Hal Elgerochek... 10.Nov.11)

. . System cache and memory use. (~Rebecca Kijipy... 11.Nov.11)

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