From owner-freebsd-stable Mon Mar 17 1:22:52 2003 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 C31F037B401 for ; Mon, 17 Mar 2003 01:22:50 -0800 (PST) Received: from cirb503493.alcatel.com.au (c18609.belrs1.nsw.optusnet.com.au [210.49.80.204]) by mx1.FreeBSD.org (Postfix) with ESMTP id CBF0E43FA3 for ; Mon, 17 Mar 2003 01:22:49 -0800 (PST) (envelope-from peterjeremy@optushome.com.au) Received: from cirb503493.alcatel.com.au (localhost.alcatel.com.au [127.0.0.1]) by cirb503493.alcatel.com.au (8.12.8/8.12.8) with ESMTP id h2H9MiM2001310; Mon, 17 Mar 2003 20:22:44 +1100 (EST) (envelope-from jeremyp@cirb503493.alcatel.com.au) Received: (from jeremyp@localhost) by cirb503493.alcatel.com.au (8.12.8/8.12.8/Submit) id h2H9MhtN001309; Mon, 17 Mar 2003 20:22:43 +1100 (EST) Date: Mon, 17 Mar 2003 20:22:43 +1100 From: Peter Jeremy To: The Hermit Hacker Cc: freebsd-stable@FreeBSD.ORG Subject: Re: Server feels sluggish ... Message-ID: <20030317092242.GD1200@cirb503493.alcatel.com.au> References: <20030316022218.V65381@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030316022218.V65381@localhost> User-Agent: Mutt/1.4i Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Sun, Mar 16, 2003 at 02:35:30AM -0400, The Hermit Hacker wrote: >Okay, this has to be the worst report of all time, but one of my ligher >loaded servers feels more sluggish then the heavy loaded one ... starting >commands seems to 'hang' for a bit and then go, changing folders in mail >takes forever, etc ... yet there is about a 1/4 the processes running on >this system ... so this is more a 'is there something I shuld be looking >at' kinda email, since I can't pinpoint anything as being wrong, it just >*feels* sluggish :( Are you using a VTY console, local X or a network login? Are the filesystems local or NFS mounted (I presume local). If you're using a network login and/or NFS, it could be a network problem. I presume you've checked that aacd0 doesn't have a dead disk (which would make disk I/O very slow). Does the system have ECC and if so is there a hard correctable error that is generating lots of additional RAM traffic? Have you accidently disabled one or both caches? You could try something like lmbench. As a collection of microbenchmarks, it might narrow down the problem. If you don't find anything else, it might be worthwhile pulling RAM and/or one of the CPUs and seeing if you can make the problem go away. Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message