From: Matt Mackall <mpm@selenic.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Rusty Russell <rusty@rustcorp.com.au>,
akpm@linux-foundation.org, Linux-kernel@vger.kernel.org
Subject: Re: Interesting interaction between lguest and CFS
Date: Mon, 4 Jun 2007 13:42:24 -0500 [thread overview]
Message-ID: <20070604184224.GH11115@waste.org> (raw)
In-Reply-To: <20070604181151.GA1745@elte.hu>
On Mon, Jun 04, 2007 at 08:11:51PM +0200, Ingo Molnar wrote:
>
> * Matt Mackall <mpm@selenic.com> wrote:
>
> > With 2.6.22-rc3-mm1, I've got a long-running video transcoding going
> > on. In other windows, I'm compiling, reading email, etc. with no
> > noticeable problems.
> >
> > If I fire up lguest and leave it sitting at a shell prompt for a
> > couple moments, when I return to type something at the prompt, it can
> > take 2-3 seconds for my input to echo. Once it starts responding,
> > typing latency disappears. Suspend the other app and the latency
> > disappears.
>
> btw., does this only happen with lguest, or with other idle shells too?
Only noticed with lguest.
> perhaps lguest does something unusual when it idles? Does it fiddle
> sched_clock() in any way?
In the host? That'd be weird.
--
Mathematics is the supreme nostalgia of our time.
next prev parent reply other threads:[~2007-06-04 18:42 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-04 17:37 Interesting interaction between lguest and CFS Matt Mackall
2007-06-04 17:54 ` Ingo Molnar
2007-06-04 18:41 ` Matt Mackall
2007-06-05 7:19 ` Ingo Molnar
2007-06-05 14:03 ` Matt Mackall
2007-06-05 15:14 ` Dmitry Adamushko
2007-06-05 15:41 ` Dmitry Adamushko
2007-06-05 19:50 ` Ingo Molnar
2007-06-06 20:23 ` Matt Mackall
2007-06-08 9:34 ` Ingo Molnar
2007-06-08 10:18 ` Ingo Molnar
2007-06-04 18:11 ` Ingo Molnar
2007-06-04 18:42 ` Matt Mackall [this message]
2007-06-04 19:12 ` Ingo Molnar
2007-06-04 19:27 ` Matt Mackall
2007-06-04 19:40 ` Ingo Molnar
2007-06-04 19:59 ` Matt Mackall
2007-06-04 20:13 ` Ingo Molnar
2007-06-04 20:20 ` Ingo Molnar
2007-06-04 20:15 ` James Morris
2007-06-04 20:24 ` Ingo Molnar
2007-06-04 22:58 ` Olof Johansson
2007-06-05 1:02 ` Rusty Russell
2007-06-05 1:24 ` Stephen Rothwell
2007-06-05 2:23 ` Olof Johansson
2007-06-05 0:18 ` Rusty Russell
2007-06-05 2:31 ` Rusty Russell
2007-06-05 4:18 ` Matt Mackall
2007-06-05 4:37 ` Rusty Russell
2007-06-05 13:49 ` Matt Mackall
2007-06-05 19:38 ` Ingo Molnar
2007-06-05 10:43 ` Ingo Molnar
2007-06-05 19:08 ` Ingo Molnar
2007-06-06 20:19 ` Matt Mackall
2007-06-05 2:34 ` Matt Mackall
2007-06-05 7:10 ` Ingo Molnar
2007-06-05 9:23 ` Ingo Molnar
2007-06-05 14:06 ` Matt Mackall
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