Date: Tue, 6 Nov 2007 10:50:35 +1300 From: Andrew Thompson <thompsa@FreeBSD.org> To: Pawel Jakub Dawidek <pjd@FreeBSD.org> Cc: freebsd-fs@FreeBSD.org, freebsd-current@FreeBSD.org Subject: Re: ZFS kmem_map too small. Message-ID: <20071105215035.GC26730@heff.fud.org.nz> In-Reply-To: <20071008121523.GM2327@garage.freebsd.pl> References: <20071005000046.GC92272@garage.freebsd.pl> <20071008121523.GM2327@garage.freebsd.pl>
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On Mon, Oct 08, 2007 at 02:15:23PM +0200, Pawel Jakub Dawidek wrote: > Here are some updates: > > I was able to reproduce the panic by rsyncing big files and trying > bonnie++ test suggested in this thread. > > Can you guys retry with this patch: > > http://people.freebsd.org/~pjd/patches/vm_kern.c.2.patch > > It's a hack, yes, but allows to mitigate the problem quite well. I'm > looking for a solution that can be used for 7.0 before we find a better > fix. Do you still plan to commit this for 7.0 or is a better solution in the works? I would assume something would need to be in before RC1. > BTW. To use ZFS you _must_ increase vm.kmem_size/vm.kmem_size_max. > If you have the problem discussed here and you're using standard values, > please retry with vm.kmem_size/vm.kmem_size_max set to at least 600MB in > /boot/loader.conf. > > I'm not sure if it's not too late to ask re@ about increasing the > default kmem size at least on amd64. ~300MB we have there is silly > small. > > -- > Pawel Jakub Dawidek http://www.wheel.pl > pjd@FreeBSD.org http://www.FreeBSD.org > FreeBSD committer Am I Evil? Yes, I Am!
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