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From: Zachary Amsden <>
To: Jeremy Fitzhardinge <>
Cc: Andi Kleen <>,
	Linux Kernel Mailing List <>,
	Andrew Morton <>,
	Rusty Russell <>,
	Chris Wright <>
Subject: Re: [PATCH 2/11] Sched clock paravirt op
Date: Tue, 06 Feb 2007 15:42:18 -0800	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

Jeremy Fitzhardinge wrote:
> Zachary Amsden wrote:
>> Scheduled (or available) time and real time are good notions.  Stolen
>> time is debatable.  But TSC is basically just always wrong.  That's
>> why I don't want to overload the rdtsc operation. 
> Well, in the Xen case it is actually guaranteed to be correct and useful
> as real time, but that's definitely not something we can expect in
> general.  But you're talking specifically about schedulable vcpu time
> here, right?

Not schedulable time, scheduled time (schedulable - scheduled) = stolen


  reply	other threads:[~2007-02-06 23:42 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-06  3:52 [PATCH 2/11] Sched clock paravirt op Zachary Amsden
2007-02-06  4:00 ` Zachary Amsden
2007-02-06 12:32 ` Andi Kleen
2007-02-06 22:47   ` Zachary Amsden
2007-02-06 23:23     ` Jeremy Fitzhardinge
2007-02-06 23:42       ` Zachary Amsden [this message]
2007-02-06 23:48         ` Jeremy Fitzhardinge
2007-02-06 23:50           ` Zachary Amsden

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