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Message-ID: <871vzdfzvv.fsf@tac.ki.iif.hu> Date: Sun, 21 Sep 2008 14:27:00 +0200 From: Ferenc Wagner <wferi@...f.hu> To: Jeremy Fitzhardinge <jeremy@...p.org> Cc: linux-kernel@...r.kernel.org, Xen-devel <xen-devel@...ts.xensource.com> Subject: Re: doubled idle count Ferenc Wagner <wferi@...f.hu> writes: > Jeremy Fitzhardinge <jeremy@...p.org> writes: > --text follows this line-- >> Ferenc Wagner wrote: >> >>> After upgrading a Xen virtual machine to Debian's 2.6.26-4 kernel, I >>> noticed that the idle counter doubled its pace on one of the machines: >>> [...] >>> One out of three machines show this effect, with the exact same kernel >>> and Xen versions (3.2.0, dom0 is Debian's stock Etch 2.6.18 kernel). >>> They aren't hosted by the same machine, though: the misbehaving one is >>> on a different installation with very similar hardware (3 vs 2 GHz). >>> All the guest are paravirtual. >> >> So you're saying that they are identical Xen and guest kernel binaries, >> but one of three is showing doubled idle time? > > Now I upgraded another domU, and that also shows this doubling effect, > so I've got two domUs (running on xen2-ha) misbehaving, and other two > (running on xen2) behaving correctly. Also, top is not confused, it shows <100% idle times. Maybe it's allright, or maybe top simply subtracts all the rest from 100... -- Feri. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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