Date: Mon, 29 Oct 2007 17:14:53 +0100 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-current@freebsd.org Cc: freebsd-fs@freebsd.org Subject: Re: ZFS kmem_map too small. Message-ID: <fg50pr$2eo$1@ger.gmane.org> In-Reply-To: <20071008121523.GM2327@garage.freebsd.pl> References: <20071005000046.GC92272@garage.freebsd.pl> <20071008121523.GM2327@garage.freebsd.pl>
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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. Your patch makes this configuration work: RELENG_7 on VMWare Server with 256 MB of memory, without any tuning to sysctl.conf and loader.conf. This is as bad environment (wrt memory pressure and timings) as you can get :) With this patch the (virtual) machine survives portsnap fetch extract, where before the patch it would soon panic with kmem_map too small. You have my vote to commit it :)
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