Date: Fri, 5 Oct 2007 16:47:59 +0200 From: Pawel Jakub Dawidek <pjd@FreeBSD.org> To: Claus Guttesen <kometen@gmail.com> Cc: freebsd-fs@freebsd.org, freebsd-current@freebsd.org Subject: Re: ZFS kmem_map too small. Message-ID: <20071005144759.GB98210@garage.freebsd.pl> In-Reply-To: <b41c75520710050319j38c431e8l983111bf9a99fdfa@mail.gmail.com> References: <20071005000046.GC92272@garage.freebsd.pl> <b41c75520710050315h34f5f30awc3da2d201426742@mail.gmail.com> <b41c75520710050319j38c431e8l983111bf9a99fdfa@mail.gmail.com>
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[-- Attachment #1 --] On Fri, Oct 05, 2007 at 12:19:59PM +0200, Claus Guttesen wrote: > > I have a server which gets these 'kmem_map too small' stops. I have an > > Dell PE2850 and is running current as of Sept. 26'th 2007. The error > > is easy to trigger. I have copied 90 GB of jpeg-files with a size of > > approx. 1 MB and a thumbnail at 4 KB. These files are distributed in > > approx. 700 folders. The files resides on it's own partition. > > Forgot to mention: > > amd64, 4 GB ram, second gen. zzzeon. qlogic hba's. > > zetta~%>more /boot/loader.conf: > #vm.kmem_size=512M > #vm.kmem_size=640M > vm.kmem_size=768M > #vm.kmem_size_max=512M > #vm.kmem_size_max=640M > vm.kmem_size_max=1024M > vfs.zfs.arc_max=1536M That's bad for sure. arc_max can't be larger than kmem_size. I should tune it down automatically in that case. Try something like 700-800MB for arc_max or increase kmem_size to 2GB. -- Pawel Jakub Dawidek http://www.wheel.pl pjd@FreeBSD.org http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFHBk6fForvXbEpPzQRAhNrAKC7peLBE+I5heDfrch/+gkAnHg1CQCeLv5j 8U8jfxdTKZzOEomFa04LUio= =sgzk -----END PGP SIGNATURE-----help
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