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Re: [Xen-ia64-devel] [PATCH][3/3] Steal time accounting for PVdomain/IA6

To: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
Subject: Re: [Xen-ia64-devel] [PATCH][3/3] Steal time accounting for PVdomain/IA64 TAKE2
From: Atsushi SAKAI <sakaia@xxxxxxxxxxxxxx>
Date: Thu, 08 May 2008 20:03:02 +0900
Cc: Aron Griffis <aron@xxxxxx>, xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
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Hi, Isaku

 Sorry for late reply.
stolen time and blocked time are counted on Xen Hypervisor.
PV kernel just use these information.
The timer interrupt checks 
both (stolen and blocked) time difference
from previous interrupt.

For this reason,
PV kernel does not need to know the time
when the timer interrupt handler was invoked.

Thanks
Atsushi SAKAI


Isaku Yamahata <yamahata@xxxxxxxxxxxxx> wrote:

> 
> stolentick is used to clip sotlen and blocked.
> It looks like it should be the diff of now and the tick when
> the timer interrupt handler was invoked, not new_itm.
> Atsushi, any comment?
> 
> -- 
> yamahata



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