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

From: krad <kraduk_at_googlemail.com>
Date: Fri, 18 Dec 2009 17:05:14 +0000
2009/12/18 Alexander Zagrebin <alexz_at_visp.ru>

> > > 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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Not really a proper fix but what happens if you have something defined as
the l2arc device?
Received on Fri Dec 18 2009 - 16:05:16 UTC

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