From owner-freebsd-hackers@FreeBSD.ORG Wed Jun 22 15:46:11 2005 Return-Path: X-Original-To: hackers@freebsd.org Delivered-To: freebsd-hackers@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 8E64D16A41C; Wed, 22 Jun 2005 15:46:11 +0000 (GMT) (envelope-from mime@traveller.cz) Received: from ss.eunet.cz (ss.eunet.cz [193.85.228.13]) by mx1.FreeBSD.org (Postfix) with ESMTP id 23F8B43D49; Wed, 22 Jun 2005 15:46:10 +0000 (GMT) (envelope-from mime@traveller.cz) Received: from localhost.i.cz (ss.eunet.cz [193.85.228.13]) by ss.eunet.cz (8.13.1/8.13.1) with ESMTP id j5MFjwSu012450; Wed, 22 Jun 2005 17:45:59 +0200 (CEST) (envelope-from mime@traveller.cz) From: Michal Mertl To: Daniel Eischen In-Reply-To: References: Content-Type: text/plain Date: Wed, 22 Jun 2005 17:45:57 +0200 Message-Id: <1119455157.1401.9.camel@genius1.i.cz> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 FreeBSD GNOME Team Port Content-Transfer-Encoding: 7bit Cc: Dag-Erling =?ISO-8859-1?Q?Sm=F8rgrav?= , hackers@freebsd.org, Charles Sprickman Subject: Re: Nagios and threads X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Jun 2005 15:46:11 -0000 Daniel Eischen wrote: > On Tue, 21 Jun 2005, Michal Mertl wrote: > > > Dag-Erling Smrgrav wrote: > > > Charles Sprickman writes: > > > > 1. FreeBSD and threads. On FreeBSD there's a native user-level > > > > implementation of threads called 'pthread' and there's also an > > > > optional ports collection 'linuxthreads' that uses kernel hooks. > > > > > > This is only the case for FreeBSD 4. FreeBSD 5 has native threads. > > > > Yes, the description on Nagios page is not precise but unfortunately > > Nagios still has some problems even on 5.4. I wasn't able to find out > > what was wrong and the problem dissappeared when I had to replace the > > computer with single-processor one. The symptoms I observed were that > > every several days one Nagios process was consuming all the CPU doing > > hundreds of thousands of syscalls per second. It got always stuck around > > the time when the the daily cron job run. > > > > I did a ktrace on the stuck process and tried to abort it to have the > > core but I've lost the ktrace output and it never saved the core :-(. > > > > I'll install it on another machine and try to diagnose the problem some > > more. > > You gotta try it on -stable. OK. I installed Nagios on a SMP computer with fresh -stable. I tried to stress the disk but until now Nagios hasn't hung. Michal