I wonder if anyone has came across an issue with a file server they may be using where the file server takes up almost all available ram, even if the system is idle  I have come across this issues on a Windows 2008 R2 system but I understand this issue affects almost all other systems earlier than 2012.  64 bit systems are affected more than 32 bit due to the limit of ram on 32 bit systems.

Apparently this issue is that the Metafile grows so large especially on file servers to take up almost all available ram.  You can see this by using RAMMAP from systeminternals but task manager will not show it.

Generally a restart will help, but the metafile usage will grow again, even adding in extra ram may not help.

I found a link to Microsoft Windows Dynamic Cache Service which may be of use to some people as it manages the working set. I  have not used this yet but it does seem that it could be helpful.

Tim, do you know about this issue and of the MS Dynamic Cache and can you comment, would it have any negative impact on DBISAM if it is used?

Regards
David.

David,

<< I found a link to Microsoft Windows Dynamic Cache Service which may be of use to some people as it manages the working set. I  have not used this yet but it does seem that it could be helpful.

Tim, do you know about this issue and of the MS Dynamic Cache and can you comment, would it have any negative impact on DBISAM if it is used? >>

Yes, you can use that service to manage the file system cache, but unless you're running into issues where the file system caching is causing performance issues (due to a lack of memory or excessive swapping), I wouldn't worry about it.  Our internal tests with this indicate that there isn't any large performance penalties associated with the caching, and that the Windows VMM does a performant job of making the memory available for other uses, if necessary.

Tim Young
Elevate Software
www.elevatesoft.com