From: Daniel Phillips <phillips@innominate.de>
To: Rik van Riel <riel@conectiva.com.br>,
Linus Torvalds <torvalds@transmeta.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH] drop-behind fix for generic_file_write
Date: Wed, 3 Jan 2001 16:21:17 +0100 [thread overview]
Message-ID: <01010316360903.00713@gimli> (raw)
In-Reply-To: <Pine.LNX.4.21.0101031256040.1403-100000@duckman.distro.conectiva>
On Wed, 03 Jan 2001, Rik van Riel wrote:
> Hi Linus, Alan,
>
> the following (trivial) patch fixes drop-behind behaviour
> in generic_file_write to only drop fully written pages.
>
> This increases performance in dbench by about 8% (as
> measured by Daniel Phillips) and should get rid of the
> logfile bottleneck Ingo Molnar found with the drop-behind
> call in generic_file_write in TUX tests.
Rik, I detected the speedup in -pre5 but it disappeared in -pre7 (which
turned in a faster performance than pre5 or 6 anyway). I don't have an
explanation for that. The idea makes sense: treat a partial page as
'in play' until completely full, then deactivate it.
--
Daniel
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux.eu.org/Linux-MM/
next prev parent reply other threads:[~2001-01-03 15:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-03 14:57 Rik van Riel
2001-01-03 15:21 ` Daniel Phillips [this message]
2001-01-03 15:21 ` Rik van Riel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=01010316360903.00713@gimli \
--to=phillips@innominate.de \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=riel@conectiva.com.br \
--cc=torvalds@transmeta.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox