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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20070605140635.GS11115@waste.org>
Date:	Tue, 5 Jun 2007 09:06:36 -0500
From:	Matt Mackall <mpm@...enic.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Rusty Russell <rusty@...tcorp.com.au>, akpm@...ux-foundation.org,
	Linux-kernel@...r.kernel.org
Subject: Re: Interesting interaction between lguest and CFS

On Tue, Jun 05, 2007 at 11:23:44AM +0200, Ingo Molnar wrote:
> 
> * 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?

Yes.

-- 
Mathematics is the supreme nostalgia of our time.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/