From owner-freebsd-bugs@FreeBSD.ORG Wed Nov 3 02:20:10 2010 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E8C36106566C for ; Wed, 3 Nov 2010 02:20:10 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id AAE068FC16 for ; Wed, 3 Nov 2010 02:20:10 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.4/8.14.4) with ESMTP id oA32KAfM091059 for ; Wed, 3 Nov 2010 02:20:10 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id oA32KA6S091058; Wed, 3 Nov 2010 02:20:10 GMT (envelope-from gnats) Resent-Date: Wed, 3 Nov 2010 02:20:10 GMT Resent-Message-Id: <201011030220.oA32KA6S091058@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Mihai-Catalin Salgau Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 69202106566C for ; Wed, 3 Nov 2010 02:12:42 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (www.freebsd.org [IPv6:2001:4f8:fff6::21]) by mx1.freebsd.org (Postfix) with ESMTP id 57B2C8FC1C for ; Wed, 3 Nov 2010 02:12:42 +0000 (UTC) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.14.3/8.14.3) with ESMTP id oA32Cg14087848 for ; Wed, 3 Nov 2010 02:12:42 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.14.3/8.14.3/Submit) id oA32CgBO087847; Wed, 3 Nov 2010 02:12:42 GMT (envelope-from nobody) Message-Id: <201011030212.oA32CgBO087847@www.freebsd.org> Date: Wed, 3 Nov 2010 02:12:42 GMT From: Mihai-Catalin Salgau To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Cc: Subject: kern/151905: [zfs] page fault under load in /sbin/zfs X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Nov 2010 02:20:11 -0000 >Number: 151905 >Category: kern >Synopsis: [zfs] page fault under load in /sbin/zfs >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Nov 03 02:20:10 UTC 2010 >Closed-Date: >Last-Modified: >Originator: Mihai-Catalin Salgau >Release: 8.1-STABLE >Organization: >Environment: FreeBSD host.local 8.1-STABLE FreeBSD 8.1-STABLE #0: Mon Nov 1 02:46:57 EET 2010 root@host.local:/usr/obj/usr/src/sys/GENERIC amd64 >Description: System load: Around 20 zfs clone/destroy operations every couple of minutes and about 200 permanent containers. Data served from within clones to scripts. During this time system load spikes to 12.0+, runs around 8.0. System has 8 cores, 16 GB RAM, of which vm.kmem_size="10G", vfs.zfs.arc_max="8G". Screencap of panic: http://img64.imageshack.us/img64/2903/021110zfscrash.jpg Scrubs found no problems. >How-To-Repeat: Unknown. Usually load dependant. Did happen one when working with only one core hammered to 100%. >Fix: >Release-Note: >Audit-Trail: >Unformatted: