Date: Mon, 4 Nov 2002 14:09:18 +0700 (ICT) From: alain@cscoms.net To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/44867: Frequent hard hangs on ASUS P4T-E/P4S-533 based servers Message-ID: <200211040709.gA479IrC030310@webmail.cscoms.com>
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>Number: 44867 >Category: kern >Synopsis: Frequent hard hangs on ASUS P4T-E/P4S-533 based servers >Confidential: no >Severity: serious >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sun Nov 03 23:10:01 PST 2002 >Closed-Date: >Last-Modified: >Originator: Alain Fauconnet <alain@cscoms.net> >Release: FreeBSD 4.6.2-RELEASE i386 >Organization: CS Communications >Environment: System: FreeBSD webmail.cscoms.com 4.6.2-RELEASE FreeBSD 4.6.2-RELEASE #0: Wed Sep 11 04:08:20 ICT 2002 root@webmail.cscoms.com:/usr/src/sys/compile/LILO i386 At least 3 servers: ASUS P4T-E and P4S-533 m/b P4 1.6Ghz and 1.8 Ghz CPU 512Mb memory IDE disks >Description: These servers began experiencing hard hangs (even DDB key sequence does not work) since 4.6. It happens on at least 3 different servers, all with simple configuration (3COM 3C905C only non on-board adapter, USB not used, parallel, serial ports not used, text mode console only, no X). Servers have moderate to high load (busy web mail server, MRTG server). Hang frequence is from 2/week to 2/day. Absolutely nothing of interest in any log file. Disabling dma (hw.ata.ata_dma="0" in /boot/loader.conf) makes hangs happen less often (0.5/week) but does not make them disappear. CVSup to 4.7-RC as of 18-Sep-2002 didn't fix problem. 4.7-RELEASE to be tried. Downgrading one of the servers to 4.5-RELEASE has made it stable. >How-To-Repeat: Nothing special, just normal server operation. Unfortunately no way to cause the hangs. >Fix: Downgrade to 4.5-RELEASE >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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