Date: Tue, 22 May 2007 08:31:12 +0000 From: Darren Reed <darrenr@freebsd.org> To: Vince <jhary@unsane.co.uk> Cc: freebsd-fs@FreeBSD.org, Craig Boston <craig@xfoil.gank.org>, freebsd-current@FreeBSD.org, Pawel Jakub Dawidek <pjd@FreeBSD.org>, Kris Kennaway <kris@obsecurity.org> Subject: Re: ZFS committed to the FreeBSD base. Message-ID: <20070522083112.GA5136@hub.freebsd.org> In-Reply-To: <4651BD6F.5050301@unsane.co.uk> References: <20070407165759.GG8831@cicely12.cicely.de> <20070407180319.GH8831@cicely12.cicely.de> <20070407191517.GN63916@garage.freebsd.pl> <20070407212413.GK8831@cicely12.cicely.de> <20070410003505.GA8189@nowhere> <20070410003837.GB8189@nowhere> <20070410011125.GB38535@xor.obsecurity.org> <20070410013034.GC8189@nowhere> <20070410014233.GD8189@nowhere> <4651BD6F.5050301@unsane.co.uk>
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On Mon, May 21, 2007 at 04:40:31PM +0100, Vince wrote: ... > I dont suppose that there are any other tunables people could suggest? I > got a shiny new(well old but new to me) dual opteron board and dual 250 > sata drives and though i'd try putting it in as my home server with > everything but / on zfs since i've had my /usr/ports on my laptop as > compressed zfs since very shortly after it was commited. > After a few kmem_map: too small" panics I re-read this thread and put > vm.kmem_size_max and vm.kmem_size up to 512M and vfs.zfs.arc_min > vfs.zfs.arc_max down to 65 megs. This did get me past "portsnap extract" > but a make buildworld still got me the same panic. vmstat -z showed a > steady growth. This is with a generic -CURRENT from friday. I'm happy to > provide any useful information once I get home and reboot it. Are you running the opterons with a 32 or 64 bit kernel? I set vfs.zfs.arc_max to somewhere between 75% and 80% of vm.kmem_size_max. Darren
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