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From: Jeremy Fitzhardinge <>
To: Zachary Amsden <>
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 15:23:06 -0800	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

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?


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

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-06  3:52 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 [this message]
2007-02-06 23:42       ` Zachary Amsden
2007-02-06 23:48         ` Jeremy Fitzhardinge
2007-02-06 23:50           ` Zachary Amsden

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