From owner-freebsd-stable@FreeBSD.ORG Fri Nov 14 09:52:32 2008 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id CD9051065782 for ; Fri, 14 Nov 2008 09:52:32 +0000 (UTC) (envelope-from freebsd-stable@m.gmane.org) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) by mx1.freebsd.org (Postfix) with ESMTP id 54E428FC0A for ; Fri, 14 Nov 2008 09:52:32 +0000 (UTC) (envelope-from freebsd-stable@m.gmane.org) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1L0vLq-0006zD-Ja for freebsd-stable@freebsd.org; Fri, 14 Nov 2008 09:52:30 +0000 Received: from lara.cc.fer.hr ([161.53.72.113]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 14 Nov 2008 09:52:30 +0000 Received: from ivoras by lara.cc.fer.hr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 14 Nov 2008 09:52:30 +0000 X-Injected-Via-Gmane: http://gmane.org/ To: freebsd-stable@freebsd.org From: Ivan Voras Date: Fri, 14 Nov 2008 10:51:51 +0100 Lines: 56 Message-ID: References: <491CE71F.2020208@delphij.net> <491CE835.4050504@delphij.net> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigDB7F2FA47EAE64879C2B0653" X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: lara.cc.fer.hr User-Agent: Thunderbird 2.0.0.17 (X11/20080925) In-Reply-To: <491CE835.4050504@delphij.net> X-Enigmail-Version: 0.95.0 Sender: news Subject: Re: ZFS crashes on heavy threaded environment X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Nov 2008 09:52:32 -0000 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigDB7F2FA47EAE64879C2B0653 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Xin LI wrote: > Xin LI wrote: >> Hi, Pawel, >=20 >> We can still reproduce the ZFS crash (threading+heavy I/O load) on a >> fresh 7.1-STABLE build, in a few minutes: >=20 >> /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. >=20 > Further datapoint. The system used to run with untuned loader.conf, an= d > my colleague just reported that with the following loader.conf, the > problem can be triggered sooner: >=20 > vm.kmem_size_max=3D838860800 > vm.kmem_size_scale=3D"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. --------------enigDB7F2FA47EAE64879C2B0653 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----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----- --------------enigDB7F2FA47EAE64879C2B0653--