Date: Mon, 3 Apr 2000 07:51:31 +0200 From: Wilko Bulte <wkb@chello.nl> To: Kevin Day <toasty@dragondata.com> Cc: Matthew Dillon <dillon@apollo.backplane.com>, current@FreeBSD.ORG Subject: Re: Load average calculation? Message-ID: <20000403075130.B5528@yedi.wbnet> In-Reply-To: <200004030410.XAA75906@celery.dragondata.com>; from toasty@dragondata.com on Sun, Apr 02, 2000 at 11:10:59PM -0500 References: <200004030349.UAA52843@apollo.backplane.com> <200004030410.XAA75906@celery.dragondata.com>
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On Sun, Apr 02, 2000 at 11:10:59PM -0500, Kevin Day wrote: > > :We recently upgraded a server from 2.2.8 to 4.0(the same behavior is shown > > :on 5.0-current, too). Before, with the exact same load, we'd see load > > :averages from between 0.20 and 0.30. Now, we're getting: > > : > > :load averages: 4.16, 4.23, 4.66 > > : > > :Top shows the same CPU percentages, just a much higher load average for the > > :same work being done. Did the load average calculation change, or something > > :with the scheduler differ? Customers are complaining that the load average > > :is too high, which is kinda silly, since 4.0 seems noticably faster in some > > :cases. > > : > > :Any ideas? > > : > > :Kevin > > > > I believe the load average was changed quite a while ago to reflect not > > only runnable processes but also processes stuck in disk-wait. It's > > a more accurate measure of load. > > Ahh, and since nearly everything is done on this system via NFS, I can > imagine that several things are waiting for NFS responses. > > It's probably more accurate, but from a PR standpoint it makes it "look" > like FreeBSD is choking under the load, when it really isn't. Or am I the > only one that even cares about this? :) What does the man page for 'w' say about it? At least the change should be reflected there I guess. -- Wilko Bulte Arnhem, The Netherlands http://www.tcja.nl The FreeBSD Project: http://www.freebsd.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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