From: ebiederm@xmission.com (Eric W. Biederman)
To: Mike Galbraith <mikeg@wen-online.de>
Cc: Derek Glidden <dglidden@illusionary.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: Break 2.4 VM in five easy steps
Date: 07 Jun 2001 01:59:44 -0600 [thread overview]
Message-ID: <m1y9r44t5b.fsf@frodo.biederman.org> (raw)
In-Reply-To: <Pine.LNX.4.33.0106070926400.6078-100000@mikeg.weiden.de>
Mike Galbraith <mikeg@wen-online.de> writes:
> On 7 Jun 2001, Eric W. Biederman wrote:
>
> > Does this improve the swapoff speed or just allow other programs to
> > run at the same time? If it is still slow under that kind of load it
> > would be interesting to know what is taking up all time.
> >
> > If it is no longer slow a patch should be made and sent to Linus.
>
> No, it only cures the freeze. The other appears to be the slow code
> pointed out by Andrew Morton being tickled by dead swap pages.
O.k. I think I'm ready to nominate the dead swap pages for the big
2.4.x VM bug award. So we are burning cpu cycles in sys_swapoff
instead of being IO bound? Just wanting to understand this the cheap way :)
Eric
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next prev parent reply other threads:[~2001-06-07 7:59 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <3B1E4CD0.D16F58A8@illusionary.com>
[not found] ` <3b204fe5.4014698@mail.mbay.net>
[not found] ` <3B1E5316.F4B10172@illusionary.com>
[not found] ` <m1wv6p5uqp.fsf@frodo.biederman.org>
[not found] ` <3B1E7ABA.EECCBFE0@illusionary.com>
2001-06-06 18:52 ` Eric W. Biederman
2001-06-06 19:06 ` Mike Galbraith
2001-06-06 19:28 ` Eric W. Biederman
2001-06-07 4:32 ` Mike Galbraith
2001-06-07 6:38 ` Eric W. Biederman
2001-06-07 7:28 ` Mike Galbraith
2001-06-07 7:59 ` Eric W. Biederman [this message]
2001-06-07 8:15 ` Mike Galbraith
2001-06-07 17:10 ` Marcelo Tosatti
2001-06-07 17:43 ` Please test: workaround to help swapoff behaviour Marcelo Tosatti
2001-06-06 19:28 ` Break 2.4 VM in five easy steps Derek Glidden
2001-06-09 7:55 ` Rik van Riel
2001-06-07 14:22 Bulent Abali
2001-06-07 15:38 ` Mike Galbraith
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