From: "Stephen C. Tweedie" <sct@redhat.com>
To: Marcelo Tosatti <marcelo@conectiva.com.br>
Cc: "Stephen C. Tweedie" <sct@redhat.com>, David Gould <dg@suse.com>,
"Eric W. Biederman" <ebiederm@xmission.com>,
lkml <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org
Subject: Re: [PATCH] vma limited swapin readahead
Date: Thu, 1 Feb 2001 14:36:06 +0000 [thread overview]
Message-ID: <20010201143606.P11607@redhat.com> (raw)
In-Reply-To: <Pine.LNX.4.21.0102010824000.17822-100000@freak.distro.conectiva>; from marcelo@conectiva.com.br on Thu, Feb 01, 2001 at 08:53:33AM -0200
Hi,
On Thu, Feb 01, 2001 at 08:53:33AM -0200, Marcelo Tosatti wrote:
>
> On Thu, 1 Feb 2001, Stephen C. Tweedie wrote:
>
> If we're under free memory shortage, "unlucky" readaheads will be harmful.
I know, it's a balancing act. But given that even one successful
readahead per read will halve the number of swapin seeks, the
performance loss due to the extra scavenging has got to be bad to
outweigh the benefit.
Cheers,
Stephen
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next prev parent reply other threads:[~2001-02-01 14:36 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-31 3:05 Marcelo Tosatti
2001-01-31 10:21 ` Stephen C. Tweedie
2001-01-31 8:40 ` Marcelo Tosatti
2001-01-31 19:40 ` Eric W. Biederman
2001-02-01 0:24 ` David Gould
2001-02-01 7:41 ` Eric W. Biederman
2001-02-01 11:26 ` Stephen C. Tweedie
2001-02-01 10:53 ` Marcelo Tosatti
2001-02-01 14:36 ` Stephen C. Tweedie [this message]
2001-02-01 16:45 ` Rik van Riel
2001-02-01 17:20 ` Ingo Oeser
2001-02-01 17:54 ` Rik van Riel
2001-02-01 17:27 ` Stephen C. Tweedie
2001-02-01 18:59 ` David Gould
2001-02-01 19:07 ` Rik van Riel
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