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Date:      Fri, 18 Dec 2009 13:33:56 +0300
From:      "Alexander Zagrebin" <alexz@visp.ru>
To:        "'Stefan Esser'" <se@FreeBSD.org>
Cc:        freebsd-current@freebsd.org
Subject:   RE: ZFS and UFS on the same box. Cache memory allocation issue.
Message-ID:  <CB674CF3F7F349D39EE24D05B4F8D3DF@vosz.local>
In-Reply-To: <4B2B52FD.7070206@FreeBSD.org>
References:  <398F182D4FC14D43A1CFD89C4D69817C@vosz.local> <4B2B52FD.7070206@FreeBSD.org>

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> > 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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