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Re: [Xen-devel] [PATCH 1/2] cpu steal time accounting

On 22 Feb 2006, at 23:58, Dan Hecht wrote:

To solve this, it may be best to have the hypervisor interface expose per-vcpu stolen time directly, rather than vcpu_time. Then the guest does not need to try to guess whether to charge (system_time - vcpu_time) against idle or steal.

Yes, the distinction between stolen and available time does makes sense (although I'm not sure 'available' is a great name) otherwise you can't account for wakeup latencies. account_steal_time() would need to be modified in Linux, though, as we would not need its dodgy heuristic for deciding whether to account to stolen time or iowait/idle.

 -- Keir

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