Date: Tue, 22 May 2007 11:09:47 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: Vince <jhary@unsane.co.uk> Cc: Darren Reed <darrenr@freebsd.org>, freebsd-fs@freebsd.org, Kris Kennaway <kris@obsecurity.org>, freebsd-current@freebsd.org, Craig Boston <craig@xfoil.gank.org> Subject: Re: ZFS committed to the FreeBSD base. Message-ID: <20070522090947.GA3005@garage.freebsd.pl> In-Reply-To: <4652B15D.5060505@unsane.co.uk> References: <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> <20070522083112.GA5136@hub.freebsd.org> <4652B15D.5060505@unsane.co.uk>
next in thread | previous in thread | raw e-mail | index | archive | help
--BXVAT5kNtrzKuDFl Content-Type: text/plain; charset=iso-8859-2 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, May 22, 2007 at 10:01:17AM +0100, Vince wrote: > Darren Reed wrote: > > 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 extrac= t" > >> 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. > >=20 > > Are you running the opterons with a 32 or 64 bit kernel? > >=20 > > I set vfs.zfs.arc_max to somewhere between 75% and 80% of vm.kmem_size_= max. > >=20 > I'm running i386 more because I had a i386 CD lying around to install > from and wont be using more than 3Gigs of RAM, than through informed > choice. It looks like setting kern.maxvnodes=3D50000 has solved it for = now. >=20 > (after almost a day of uptime including building world and adding the > 2nd disk to the zfs mirror) > [root@crab ~]# vmstat -m | grep sol > solaris 188066 139903K - 164899933 > 16,32,64,128,256,512,1024,2048,4096 >=20 > I may reinstall at a later date as this is still very much a box to play > with, but I gather there is no great gain from going 64 bit other than > not having to play with PAE if you've got lots or RAM. I expect there is a huge difference in performance between i386 and amd64. I'm currently setting up environment to compare ZFS on FreeBSD/i386, FreeBSD/amd64 and Solaris. --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --BXVAT5kNtrzKuDFl Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFGUrNbForvXbEpPzQRAjubAKCbBilKQ/6Q//R9DNeB0I8G4oe6uwCg8Pq4 eJKqrg+/FVDZxNjAtg5KqDk= =/RNi -----END PGP SIGNATURE----- --BXVAT5kNtrzKuDFl--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20070522090947.GA3005>