LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Zachary Amsden <zach@vmware.com>
Cc: Andi Kleen <ak@muc.de>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Andrew Morton <akpm@osdl.org>,
	Rusty Russell <rusty@rustcorp.com.au>,
	Chris Wright <chrisw@sous-sol.org>
Subject: Re: [PATCH 2/11] Sched clock paravirt op
Date: Tue, 06 Feb 2007 15:23:06 -0800	[thread overview]
Message-ID: <45C90DDA.3060009@goop.org> (raw)
In-Reply-To: <45C9056A.8060504@vmware.com>

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?

    J

  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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=45C90DDA.3060009@goop.org \
    --to=jeremy@goop.org \
    --cc=ak@muc.de \
    --cc=akpm@osdl.org \
    --cc=chrisw@sous-sol.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=rusty@rustcorp.com.au \
    --cc=zach@vmware.com \
    --subject='Re: [PATCH 2/11] Sched clock paravirt op' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).