Messages in this thread | | | Subject | Re: Steal time accounting in KVM. Benchmark. | From | Wanpeng Li <> | Date | Thu, 29 Oct 2015 17:49:39 +0800 |
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Hi Paolo, On 10/24/15 10:03 AM, Alexey Makhalov wrote: > What I figured out. > It happens in intersection of 3 features: > *irq time accounting > *stolen time accounting > *linux guest with tickless idle only (not fully tickless) > > Looks like timer interrupts storm is happening during this benchmark > (with 2:1 cpu overcommit). irq time accounting gets crazy. Even 'top' > shows weird statistic: 50% hi, 50% st, ~0% user, spinning processes > use ~0% cpu - that is not correct.
If this is the desired behavior or something need to improve?
Regards, Wanpeng Li
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