Essbase 64 bit on Windows 2003 Server: Windows Virtual cache/ Paging File ?

Hi,
the speed of our nightly calculations seems to differ from day to day between 1 and 2 hours
I am wondering, what the correct setting for the windows paging file is ?
We use Windows 2003 64 Bit Server with 16 GB RAM
We run 1 Essbase application with 80 GB pag files with 4 GB Data Cache Setting and 1 GB Indexcache Setting in EAS console - on that server is actually nothing else running in production mode (just a few essbase-test application, usually offline)
what is the recommended setting on the windows level in the windows system properties for memory usage ?
We have:
Memory Usage: Adjust for best performance of "Programs" ;
Virtual Memory/Paging file on C-Drive: Custom Size, initial Size: 10 GB, maximum size 16 GB
when system was handed over from Oracle, we had 4 GB virtual memory - however in essbase manual, you read that the recommended value should be 3-5 times the physicial ram -
for me, the cache-bevahiour is strange anyway: if I watch taskmanager, I see in the middle of our 1 hour calculation the memory usage of Esssvr.exe Service using 7 GB of RAM, then the 16 GB RAM are used up at some point (paging file is 9 GB )- then suddenly nearly all the RAM get's cleared and ESSSVR.exe memory consumption goes down to 0 and from 0 increasing again-
looks to me, as all the cache for essbase get's deleted in the miiddle of the calculation, because RAM used up for paging files ?
Can anybody explain or give a clear directions, what to check ?
our application operates normally (no abnormal termination, no generation of *.xcp files)
(Essbase is installed on the 500 GB D-Drive)

Hi John,
thanks for the helpful link - the long discussion reminded me again, that pure cores and cache is not all, what makes up a good essbase application -
I will test with calcparallel 6 (in comparison to 4) on our 64bit environment - just to see if I can achieve a 10, 20 or 30% improvement...
In addition, I must admit, that 50% of our 1-2 hour calculation is calculated in serial/ not parallel... so I expect an additional 5 to 10 min improvement, not more.
Thank you for now

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