Date: Tue, 4 Jan 2011 12:40:59 GMT From: Florian Smeets <flo@FreeBSD.org> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/153674: i386/XEN idle thread shows wrong percentages Message-ID: <201101041240.p04Cexbd047289@red.freebsd.org> Resent-Message-ID: <201101041250.p04Co98n048229@freefall.freebsd.org>
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>Number: 153674 >Category: kern >Synopsis: i386/XEN idle thread shows wrong percentages >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Tue Jan 04 12:50:09 UTC 2011 >Closed-Date: >Last-Modified: >Originator: Florian Smeets >Release: FreeBSD 9.0-CURRENT >Organization: >Environment: FreeBSD ec2 9.0-CURRENT FreeBSD 9.0-CURRENT #111: Sat Jan 1 09:45:23 UTC 2011 root@chch.daemonology.net:/usr/obj/i386.i386/usr/src/sys/XEN i386 >Description: >From time to time the idle thread does not seem to get accounted correctly, it goes through the roof and then comes down slowly, but only in top's process list. The header seems correct. CPU: 0.0% user, 0.0% nice, 0.0% system, 0.0% interrupt, 100% idle PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND 11 root 1 171 ki31 0K 8K RUN 19.1H 24566.89% idle 12 root 11 -64 - 0K 88K WAIT 1:28 2.00% intr >How-To-Repeat: I've seen this on an EC2 instance running ami-5b82b72f. This seems to happen when the instance has been idle for a while and suddenly has do to some work. >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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