From owner-freebsd-stable@FreeBSD.ORG Sun May 25 21:24:30 2003 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CA78837B401 for ; Sun, 25 May 2003 21:24:30 -0700 (PDT) Received: from mobile.hub.org (u153n214.eastlink.ca [24.224.153.214]) by mx1.FreeBSD.org (Postfix) with ESMTP id 08B6C43FA3 for ; Sun, 25 May 2003 21:24:30 -0700 (PDT) (envelope-from scrappy@hub.org) Received: by mobile.hub.org (Postfix, from userid 1001) id 070CC200; Mon, 26 May 2003 01:24:28 -0300 (ADT) Received: from localhost (localhost [127.0.0.1]) by mobile.hub.org (Postfix) with ESMTP id E66581A8; Mon, 26 May 2003 01:24:28 -0300 (ADT) Date: Mon, 26 May 2003 01:24:28 -0300 (ADT) From: The Hermit Hacker To: Steve Watt In-Reply-To: <200305260135.h4Q1ZuLG025896@wattres.Watt.COM> Message-ID: <20030526011843.I598@hub.org> References: <20030521171941.364325314@netcom1.netcom.com> <200305260135.h4Q1ZuLG025896@wattres.Watt.COM> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: stable@freebsd.org Subject: Re: system slowdown - vnode related X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 26 May 2003 04:24:31 -0000 On Sun, 25 May 2003, Steve Watt wrote: > In article <20030524190051.R598@hub.org>, scrappy@hub.org wrote: > > What version of FreeBSD are you running? There were several fixes put > >in just after 4.8 was released, one of which dealt with freeing up vnodes, > >since I was hitting similar problems on our server where we're using > >unionfs ... > > If you're on stable, I suggest reading the man page for mount_union very > carefully, especially the BUGS section. > > Be verrrry careful, you're in dangerous territory. > > (Yes, I've hurt myself on that.) Have been using unionfs for the past 6 months or so, and, if you've followed my threads in this group, am pushing several limits as far as the OS is concerned in a 32bit environment (especially with regards to vnodes) ... so far, other then the very very occasional directory inode crashes, any problem that I've had has been related to kernel structures ... My 'heaviest server' right now is running: neptune# df -t union | wc -l 55 and my other servers around 30 or so ... I'm of the belief that problems don't, and won't, get fixed unless ppl are both using the feature, and providing bug reports for them ... so far, thanks to the help of several FreeBSD kernel developers, there have been a few bugs 'knocked off' and fixed in 4.x ... and, hopefully over the next few months, I can help knock off a few more ...