Date: Sat, 28 Apr 2012 09:55:41 +0300 From: Alexander Motin <mav@FreeBSD.org> To: Albert Shih <Albert.Shih@obspm.fr> Cc: freebsd-stable@freebsd.org, Oliver Pinter <oliver.pntr@gmail.com> Subject: Re: High load event idl. Message-ID: <4F9B946D.3030607@FreeBSD.org> In-Reply-To: <20120427213459.GA61125@pcjas.obspm.fr> References: <20120427203013.GB60961@pcjas.obspm.fr> <CAPjTQNFsHZQLp8oMwhjkAWLnYZ5mPv9kr9=X5GhqHqExoHM0yw@mail.gmail.com> <20120427213459.GA61125@pcjas.obspm.fr>
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On 04/28/12 00:34, Albert Shih wrote: > Le 27/04/2012 ? 22:45:40+0200, Oliver Pinter a écrit >>> I'm running 9-stable on all my computer. (csup yesterday). >>> >>> On my desktop everything is fine. But I've two laptop, (both are Dell). On >>> both latptop I've problem about the load, event when I do nothing I got a >>> load between 0.5-1. >>> >>> Here the result of a «top» on the laptop : >>> >>> last pid: 2434; load averages: 0.63, 0.67, 0.59 up 0+00:23:59 >>> 22:25:29 >>> 57 processes: 3 running, 54 sleeping >>> CPU: 2.7% user, 0.0% nice, 3.7% system, 1.4% interrupt, 92.2% idle >>> Mem: 89M Active, 92M Inact, 198M Wired, 13M Cache, 100M Buf, 3529M Free >>> Swap: 4096M Total, 4096M Free >>> >>> Here on the desktop : >>> >>> last pid: 61010; load averages: 0.00, 0.00, 0.00 up 2+11:02:42 >>> 22:29:08 >>> 126 processes: 1 running, 125 sleeping >>> CPU: % user, % nice, % system, % interrupt, % idle >>> Mem: 803M Active, 2874M Inact, 1901M Wired, 112M Cache, 620M Buf, 202M Free >>> Swap: 6144M Total, 36M Used, 6107M Free >>> >> >> http://lists.freebsd.org/pipermail/freebsd-bugs/2012-April/048213.html > > What I understand of your message (I'm definitvly not a dev) is that's only > a little problem of accounting. > > I'm not absolute sure of that because my laptop fan never stop... > > If you want any more information... Definitely, because here I don't see much. Generally, all CPU loads and load averages now calculated via sampling, so theoretically with spiky load numbers may vary for many reasons. I would start from collecting information about running processes. To find fast switching processes that could hide from accounting try `top -SH -m io -o vcsw`. To get more information about scheduler work, use /usr/src/tools/sched/schedgraph.py (instruction inside it). -- Alexander Motin
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