From: Andrea Arcangeli <andrea@suse.de>
To: chris@scary.beasts.org
Cc: linux-kernel@vger.kernel.org
Subject: Re: VM: 2.4.10ac4 vs. 2.4.11pre2
Date: Sun, 7 Oct 2001 00:36:43 +0200 [thread overview]
Message-ID: <20011007003643.K724@athlon.random> (raw)
In-Reply-To: <Pine.LNX.4.33.0110061252450.17262-100000@sphinx.mythic-beasts.com>
In-Reply-To: <Pine.LNX.4.33.0110061252450.17262-100000@sphinx.mythic-beasts.com>; from chris@scary.beasts.org on Sat, Oct 06, 2001 at 01:20:23PM +0100
On Sat, Oct 06, 2001 at 01:20:23PM +0100, chris@scary.beasts.org wrote:
>
> dbench 8 34Mbyte/sec 40Mbyte/sec
dbench wants a very unfair vm behaviour. We must penalize all tasks
except one. I measured a x2 slowdown after Linus introduced
mark_page_accessed after 2.4.10pre11 (but still it was faster than
pre10).
If you want patches to make dbench much faster I can provide them, just
ask, at the moment I just think dbench is a very bad benchmark. I can
implement a /proc/sys/vm/dbench if people wants to post nice numbers
without having to apply patches :).
I'd also like to know what you get using -aa instead of mainline, there
are a few changes that can make a difference in the numbers.
Andrea
next prev parent reply other threads:[~2001-10-06 22:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-10-06 12:20 VM: 2.4.10ac4 vs. 2.4.11pre2 chris
2001-10-06 19:05 ` Mike Fedyk
2001-10-06 19:50 ` Rik van Riel
2001-10-06 22:36 ` Andrea Arcangeli [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-10-06 19:09 Alexei Podtelezhnikov
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