From owner-freebsd-amd64@FreeBSD.ORG Thu Jun 17 00:40:01 2010 Return-Path: Delivered-To: freebsd-amd64@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 0F9DA106564A for ; Thu, 17 Jun 2010 00:40:01 +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 C71988FC17 for ; Thu, 17 Jun 2010 00:40:00 +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 o5H0e0RH022760 for ; Thu, 17 Jun 2010 00:40:00 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id o5H0e06p022759; Thu, 17 Jun 2010 00:40:00 GMT (envelope-from gnats) Resent-Date: Thu, 17 Jun 2010 00:40:00 GMT Resent-Message-Id: <201006170040.o5H0e06p022759@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-amd64@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Dominic Duklas Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id AD8C9106566B for ; Thu, 17 Jun 2010 00:36:00 +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 9C6A68FC0C for ; Thu, 17 Jun 2010 00:36:00 +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 o5H0a0aJ033323 for ; Thu, 17 Jun 2010 00:36:00 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.14.3/8.14.3/Submit) id o5H0a0bE033319; Thu, 17 Jun 2010 00:36:00 GMT (envelope-from nobody) Message-Id: <201006170036.o5H0a0bE033319@www.freebsd.org> Date: Thu, 17 Jun 2010 00:36:00 GMT From: Dominic Duklas To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 X-Mailman-Approved-At: Thu, 17 Jun 2010 10:50:15 +0000 Cc: Subject: amd64/147926: system freezes due to heavy io to the disks X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 Jun 2010 00:40:01 -0000 >Number: 147926 >Category: amd64 >Synopsis: system freezes due to heavy io to the disks >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-amd64 >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Jun 17 00:40:00 UTC 2010 >Closed-Date: >Last-Modified: >Originator: Dominic Duklas >Release: 9.0-CURRENT >Organization: >Environment: FreeBSD lain 9.0-CURRENT FreeBSD 9.0-CURRENT #2 r209225: Wed Jun 16 01:47:01 BST 2010 root@lain:/usr/obj/usr/src/sys/LAIN amd64 >Description: I'm currently running freebsd on my desktop (core i7 920, 6gb of ram). Since around January I'm having problems with the system freezing for short periods of time and eventually locking up due to heavy reads/writes to the disk. The cursor would freeze for a split second and songs in my music player (quodlibet) would skip completely (the error logs say that the music player was unable to access the song which was currently playing, even though my music collection is on a completely different hard drive than the os). After 10-20 minutes of the occasional freezes (the frequency is random, sometimes it can go without any freeze for some minutes or it can freeze many times in a short period of time) the system locks up completely and reboots itself. There is no crash dump produced by the kernel, nor anything shows in dmesg when the short freezes occur. I tried putting freebsd on a different hard drive, changing filesystems from zfs which I currently use to ufs but the issue doesn't go away. Today I tried using the geom rr sched which was recently committed to current to see whether it would make a difference, but it didn't help. This issue is not related to swapping as ram usage never gets high enough, and is also not directly caused by heavy cpu usage, although it might be part of the problem. I've done several clean installs of freebsd current since the issue first appeared. >How-To-Repeat: make -j8 buildworld would trigger it in my case, or 2 simultaneous while loops with extracting a large file archive or compiling something big like openoffice/gcc/boost from ports. >Fix: >Release-Note: >Audit-Trail: >Unformatted: