ZFS and UFS on the same box. Cache memory allocation issue.

Alexander Zagrebin alexz at visp.ru
Fri Dec 18 10:33:58 UTC 2009

> > As result UFS returns memory to "free" pool and ZFS can 
> allocate it for ARC.
> > It significantly increases ZFS performance.
> > 
> > Is there an another workaround?
> do you know about the following ZFS loader tunables:
> vfs.zfs.arc_min="400M"
> vfs.zfs.arc_max="500M"
> These should be added to /boot/loader.conf (and they can of course be
> adjusted to make your system behave well ...)

Yes, I do.
vfs.zfs.arc_min would be used at this situation, but it seems that setting
this sysctl doesn't help.

Alexander Zagrebin

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