Hi,
On Mon, Jun 23, 2008 at 04:37:36AM -0700, Mike DeMarco wrote:
> Just a note to hopefully help someone else out.
>
> I have been running VirtualBox on my sager laptop inside zfs partition with
> 2Gbytes of ram build 82. Even though I had the Guest OS set to 600Meg.
> (WindowsXP) MY memory would keep dropping until I started seeing performance
> problems. I added another 2Gbyte of ram to the system but this only delayed
> the performance problem. I thought that it might have been a memory leak with
> VirtualBox but the process memory usage never grew.
>
> I found the problem to be zfs cache. I believe this was caused by the large
> file size of VirtualBox and that ZFS cache keeps trying to bring it into
> memory. I have limited zfs cache down to 1Gbyte using the following line in
> /etc/system
> set zfs:zfs_arc_max = 0x3E800000
>
> The performance problems went away and VirtualBox is still happy.
>
> Hope this is help to someone.
Just generally about "ZFS Evil"; check following page:
http://www.solarisinternals.com/wiki/index.php/ZFS_Evil_Tuning_Guide
/j.
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