Date: Mon, 1 Dec 1997 14:59:35 -0600 (CST) From: Justen Stepka <jstepka@chaos.winternet.com> To: Tom <tom@uniserve.com> Cc: Mattias Pantzare <pantzer@ludd.luth.se>, Justen Stepka <jstepka@chaos.winternet.com>, FreeBSD-stable@freebsd.org Subject: Re: CPU Load Message-ID: <Pine.BSF.3.96.971201145447.18618A-100000@bullfrog.winternet.com> In-Reply-To: <Pine.BSF.3.96.971130230820.26183A-100000@shell.uniserve.com>
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On Sun, 30 Nov 1997, Tom wrote: > > 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. the processes that are taking so much CPU time are the nsfd daemons, there are two of them with a 35%+ WCPU and CPU. Justen Stepka
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