Avi Kivity schrieb:
I'm guessing there's a problem with timers or timer interrupts.
What is the host cpu?
4 entries like this in /proc/cpuinfo:
processor : 3
vendor_id : AuthenticAMD
cpu family : 15
model : 65
model name : Dual-Core AMD Opteron(tm) Processor 2212
That's probably the kvmclock issue that hit older AMDs. It was fixed in
kvm-84, please try that.
I've been running it for about a week now with kvm-84 and no guest got slow.
Can it be related to using cpufreq and ondemand governor?
1) with kvm-83 and cpufreq/ondemand, guests go totally crazy (see
"Houston, we have May 15, 1953" thread)
2) with kvm-83 without cpufreq, "slowness" affects guests sometimes
3) with kvm-84 and cpufreq/ondemand, "slowness" affects guests sometimes
4) with kvm-84 without cpufreq, everything run correctly (at least it
does for a week now)
Does anything from this make any sense? I would really like to use
cpufreq/ondemand on the host with KVM, as my tests show it would save me
about 50 EUR on electricity bills per one of such servers yearly.
--
Tomasz Chmielewski
http://wpkg.org
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