linux-kernel - Re: Interesting interaction between lguest and CFS

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Message-ID: <20070605092344.GA20600@elte.hu>
Date:	Tue, 5 Jun 2007 11:23:44 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Matt Mackall <mpm@...enic.com>
Cc:	Rusty Russell <rusty@...tcorp.com.au>, akpm@...ux-foundation.org,
	Linux-kernel@...r.kernel.org
Subject: Re: Interesting interaction between lguest and CFS


* Matt Mackall <mpm@...enic.com> wrote:

> Ok, my transcoding just finished as I was writing this. So I've 
> reproduced the problem with this Python script that I had handy:
> 
> memload.py:
> #!/usr/bin/python
> a = "a" * 16 * 1024 * 1024
> while 1:
>     b = a[1:] + "b"
>     a = b[1:] + "c"

i suspect the same latency is triggered by a simple infinite loop too:

	while : ; do : ; done &

correct?

	Ingo
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