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Avi Kivity wrote: > I estimate that that take_cpu_down will run for about a millisecond if > there are a few hundred vcpus which have last run on the dying cpu (and > that's an extreme case, which is not expected in normal operation). I measured vmclear time on an uncached vmcs (which would be all except for a handful which are cached on the cpu core) at 144 cycles. Assuming a couple of cache misses for walking the list and accessing the vmcs, we're at about 500 cycles per vcpu, or 250us @ 2GHz. So worst case is significantly less than 1 ms. Is this acceptable for take_cpu_down()? -- error compiling committee.c: too many arguments to function - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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