Date: Fri, 14 Nov 2008 10:51:51 +0100 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-stable@freebsd.org Subject: Re: ZFS crashes on heavy threaded environment Message-ID: <gfjhon$l3a$1@ger.gmane.org> In-Reply-To: <491CE835.4050504@delphij.net> References: <491CE71F.2020208@delphij.net> <491CE835.4050504@delphij.net>
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[-- Attachment #1 --] Xin LI wrote: > Xin LI wrote: >> Hi, Pawel, > >> We can still reproduce the ZFS crash (threading+heavy I/O load) on a >> fresh 7.1-STABLE build, in a few minutes: > >> /usr/local/bin/iozone -M -e -+u -T -t 128 -S 4096 -L 64 -r 4k -s 30g -i >> 0 -i 1 -i 2 -i 8 -+p 70 -C Yes, this is known. >> I have included a backtrace output from my colleague who has his hands >> on the test environment. Should there is more information necessary >> please let us know and we wish to provide help on this. > > Further datapoint. The system used to run with untuned loader.conf, and > my colleague just reported that with the following loader.conf, the > problem can be triggered sooner: > > vm.kmem_size_max=838860800 > vm.kmem_size_scale="2" These two settings only serve to calculate vm.kmem_size, so you could simply skip them and adjust vm.kmem_size directly. > The system is running FreeBSD/amd64 7.1-PRERELEASE equipped with 8GB of > RAM with GENERIC kernel. You can tune vm.kmem_size to near 2 GB on your machine and OS version. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFJHUp3ldnAQVacBcgRAhF9AJ9+U+lkmjl6QWJqXzZdlKl43nV/XQCg0jaP X0ISocjzXH78b+q4fdgcGO0= =PdKe -----END PGP SIGNATURE-----home | help
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