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max size of file cache in Windows XP?

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November 2, 2004 4:07:05 AM

Archived from groups: microsoft.public.windowsxp.perform_maintain (More info?)

Hi, Does someone know the maximum size of the file cache in
Windows XP Professional? I have an XP-Pro machine with 2GB physical
memory here & the cache is topping out at about 542MB for some reason
(see debugger output below).

I have already set the LargeSystemCache key in the Registry to a value
of 1. I also experimented with a Russinovich utility called CacheSet.
So far, I've had little luck in getting the system to use more than
542MB for the file cache.

I am guessing the maximum is hard-coded because of an article at
http://www.microsoft.com/technet/prodtechnol/windows200....
The authors noted a 960MB maximum for the file cache in Windows 2000
*Server.*

Info on XP's maximum and/or tips would be appreciated--

--BGU

____________

lkd> !filecache
***** Dump file cache******
Reading and sorting VACBs ...
Removed 1 nonactive VACBs, processing 2045 active VACBs ...
File Cache Information
Current size 511216 kb
Peak size 555372 kb
2045 Control Areas
Skipping view @ c1040000 - no VACB, but PTE is valid!
Skipping view @ ce0c0000 - no VACB, but PTE is valid!
Skipping view @ d53c0000 - no VACB, but PTE is valid!
Loading file cache database (100% of 131072 PTEs)
SkippedPageTableReads = 0
File cache has 114192 valid pages
Anonymous
November 3, 2004 10:42:02 AM

Archived from groups: microsoft.public.windowsxp.perform_maintain (More info?)

Hi,

I recommend to set the physical memory to System Managed. The amount of
memory utilized at a given time will depend on the number of applications
running, the amount of memory allocated to each application and so on.
Setting the memory to a particular size especially trying to set the maximum
size will make the situation worse.

Regards
M. Rajesh
..Net and Windows Shell MVP
www.winxpsolution.com.

"Blake" wrote:

> Hi, Does someone know the maximum size of the file cache in
> Windows XP Professional? I have an XP-Pro machine with 2GB physical
> memory here & the cache is topping out at about 542MB for some reason
> (see debugger output below).
>
> I have already set the LargeSystemCache key in the Registry to a value
> of 1. I also experimented with a Russinovich utility called CacheSet.
> So far, I've had little luck in getting the system to use more than
> 542MB for the file cache.
>
> I am guessing the maximum is hard-coded because of an article at
> http://www.microsoft.com/technet/prodtechnol/windows200....
> The authors noted a 960MB maximum for the file cache in Windows 2000
> *Server.*
>
> Info on XP's maximum and/or tips would be appreciated--
>
> --BGU
>
> ____________
>
> lkd> !filecache
> ***** Dump file cache******
> Reading and sorting VACBs ...
> Removed 1 nonactive VACBs, processing 2045 active VACBs ...
> File Cache Information
> Current size 511216 kb
> Peak size 555372 kb
> 2045 Control Areas
> Skipping view @ c1040000 - no VACB, but PTE is valid!
> Skipping view @ ce0c0000 - no VACB, but PTE is valid!
> Skipping view @ d53c0000 - no VACB, but PTE is valid!
> Loading file cache database (100% of 131072 PTEs)
> SkippedPageTableReads = 0
> File cache has 114192 valid pages
>
!