From owner-freebsd-bugs  Thu Feb  7 13:40:12 2002
Delivered-To: freebsd-bugs@hub.freebsd.org
Received: from freefall.freebsd.org (freefall.FreeBSD.org [216.136.204.21])
	by hub.freebsd.org (Postfix) with ESMTP id 9A3E837B416
	for <freebsd-bugs@hub.freebsd.org>; Thu,  7 Feb 2002 13:40:00 -0800 (PST)
Received: (from gnats@localhost)
	by freefall.freebsd.org (8.11.6/8.11.6) id g17Le0v84919;
	Thu, 7 Feb 2002 13:40:00 -0800 (PST)
	(envelope-from gnats)
Received: from freefall.freebsd.org (freefall.FreeBSD.org [216.136.204.21])
	by hub.freebsd.org (Postfix) with ESMTP id AE3E437B425
	for <freebsd-gnats-submit@FreeBSD.org>; Thu,  7 Feb 2002 13:36:36 -0800 (PST)
Received: (from nobody@localhost)
	by freefall.freebsd.org (8.11.6/8.11.6) id g17Laas84335;
	Thu, 7 Feb 2002 13:36:36 -0800 (PST)
	(envelope-from nobody)
Message-Id: <200202072136.g17Laas84335@freefall.freebsd.org>
Date: Thu, 7 Feb 2002 13:36:36 -0800 (PST)
From: Craig <craig@avnet.co.uk>
To: freebsd-gnats-submit@FreeBSD.org
X-Send-Pr-Version: www-1.0
Subject: kern/34711: frequent system stall under moderate scsi load
Sender: owner-freebsd-bugs@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-bugs.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-bugs>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-bugs>
X-Loop: FreeBSD.org


>Number:         34711
>Category:       kern
>Synopsis:       frequent system stall under moderate scsi load
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Feb 07 13:40:00 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Craig
>Release:        4.1
>Organization:
none
>Environment:
>Description:
the OS appears to hang fairly frequently under moderate load.
all connections get stalled, and sometimes dropped.
occasionally the server reboots itself.

i initialy thought it might be a file locking problem with the buletin board software, but i think it is more fundemental than that.
>How-To-Repeat:
cannot provide a way to repeat, but having looked through previous reports, it could be large file movement related.

the server does nothing except serve two UBB forums.
if more than a couple of people try to post at once, then the process queue fills up with the perl pids and starts the problem.
>Fix:
      
>Release-Note:
>Audit-Trail:
>Unformatted:

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-bugs" in the body of the message