Re: [Xen-devel] high CPU stolen time after live migrate

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 08.10.17 at 07:29, <dongli.zhang@xxxxxxxxxx> wrote:
> Whatever the fix would be applied to guest kernel side, I think the root cause
> is because xen hypervisor returns a RUNSTATE_runnable time less than the
> previous one before live migration.
> 
> As I am not clear enough with xen scheduling, I do not understand why
> RUNSTATE_runnable cputime is decreased after live migration.

Isn't this simply because accounting starts from zero again in the
new (migrated) domain? If so, that's nothing that ought to change,
it would still be the guest kernel responsible to take care of if it
matters to it.

Jan


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