From owner-freebsd-stable Sun Nov 30 23:15:39 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id XAA14033 for stable-outgoing; Sun, 30 Nov 1997 23:15:39 -0800 (PST) (envelope-from owner-freebsd-stable) Received: from pop.uniserve.com (pop.uniserve.com [204.244.156.3]) by hub.freebsd.org (8.8.7/8.8.7) with SMTP id XAA14013 for ; Sun, 30 Nov 1997 23:15:32 -0800 (PST) (envelope-from tom@uniserve.com) Received: from shell.uniserve.com [204.244.210.252] by pop.uniserve.com with smtp (Exim 1.73 #1) id 0xcQ3z-00006T-00; Sun, 30 Nov 1997 23:14:39 -0800 Date: Sun, 30 Nov 1997 23:14:34 -0800 (PST) From: Tom To: Mattias Pantzare cc: Justen Stepka , FreeBSD-stable@freebsd.org Subject: Re: CPU Load In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@freebsd.org X-Loop: FreeBSD.org Precedence: bulk On Mon, 1 Dec 1997, Mattias Pantzare wrote: > On Sat, 29 Nov 1997, Justen Stepka wrote: > > > Recently I added memory to my NFS server (dx4-100 now w/ 32 megs of RAM), > > when I did this the overall system preformance increased dramiticly. The > > problem that I noticed was that when using NFS/NIS the CPU load climbs to > > about 4.0+, is there a special reason that this might be happening? > > The load value is not CPU load. It is the average number of processes > ready to run or waiting for disk I/O to complete. No, it is the average number of processes that are ready-to-run. Processes waiting for disk io (or any io) are not ready to run. > So it is normal for a NFS server to have a high load, as it is often > waiting for disk I/O. It is normal for NFS servers to have a low load, because NFS serving is not CPU intensive, and io bound. A load of 4+ for a NFS server is not normal. I would suggest determining which processes are using CPU time. Tom