Date: Mon, 14 Apr 1997 00:49:48 -0700 (PDT) From: Doug White <dwhite@gdi.uoregon.edu> To: Brian Scott <bscott@ucsd.edu> Cc: questions@FreeBSD.org Subject: Re: Spikes in server load Message-ID: <Pine.BSF.3.96.970414004908.7719c-100000@localhost> In-Reply-To: <3.0.1.32.19970413232726.00784ca4@tierranet.com>
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On Sun, 13 Apr 1997, Brian Scott wrote: > Hello. > > We've got two FreeBSD servers (2.2.1R and 2.1.7R) on a loaded 10baseT hub. > I've > noticed the following behavior: server load is usually 0, but in a single > second > will spike to something > 1. Since this is a one-minute average, this would > indicate that there was a _huge_ load spike during the period of one second. > This happens quite often on both computers: > > 4:01PM up 18 days, 19:06, 2 users, load averages: 0.00, 0.02, 0.08 > 4:01PM up 18 days, 19:06, 2 users, load averages: 0.00, 0.02, 0.08 > 4:01PM up 18 days, 19:06, 2 users, load averages: 1.76, 0.39, 0.21 > 4:02PM up 18 days, 19:06, 2 users, load averages: 1.62, 0.38, 0.21 > 4:02PM up 18 days, 19:06, 2 users, load averages: 1.49, 0.37, 0.21 You might watch "systat -pigs 2" during one of these spikes. Some crontask may be running that does alot of work for a short amount of time. Doug White | University of Oregon Internet: dwhite@resnet.uoregon.edu | Residence Networking Assistant http://gladstone.uoregon.edu/~dwhite | Computer Science Major
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