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Re: [Xen-devel] [PATCH/RFC] Wrong account for cpus other than 0 on hotpl
| To: | Glauber de Oliveira Costa <gcosta@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH/RFC] Wrong account for cpus other than 0 on hotplug |
| From: | Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
| Date: | Fri, 13 Oct 2006 21:33:53 +0100 |
| Delivery-date: | Fri, 13 Oct 2006 13:45:04 -0700 |
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| In-reply-to: | <20061013175025.GA13539@xxxxxxxxxx> |
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| Thread-topic: | [Xen-devel] [PATCH/RFC] Wrong account for cpus other than 0 on hotplug |
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On 13/10/06 6:50 pm, "Glauber de Oliveira Costa" <gcosta@xxxxxxxxxx> wrote: > Is a x86_64 system with multiple CPUs, process accounting is done wrong after > one cpu goes off and on again (i.e.: a CPU bounded process is running > but gets 0% cpu for a time, until situation becomes normal again). > > The following patch is a first attempt to fix it. The struct keeps > zeroed after HYPERVISOR_vcpu_op() is called, thus leading to wrong > results. Accounting seems to be done right without it. However, I'm not > 100 % sure we can just poke it out. Comments on this are very welcome. This patch turns off the missing ticks accounting entirely, as the runstate_info structure will never be updated. Are you sure this appears to be an x86_64-specific issue? -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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