Date: Mon, 8 Oct 2007 14:15:23 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: freebsd-fs@FreeBSD.org Cc: freebsd-current@FreeBSD.org Subject: Re: ZFS kmem_map too small. Message-ID: <20071008121523.GM2327@garage.freebsd.pl> In-Reply-To: <20071005000046.GC92272@garage.freebsd.pl> References: <20071005000046.GC92272@garage.freebsd.pl>
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--Tnj+unmjHTqEM5y0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable 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. 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. --=20 Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! --Tnj+unmjHTqEM5y0 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFHCh9bForvXbEpPzQRAlLFAKD2Xo69Xid2JKshQ3ATi1m6MM/CrgCdFmN8 t4Ayssew0tklY0lh+iOSEFA= =sRS8 -----END PGP SIGNATURE----- --Tnj+unmjHTqEM5y0--
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