From: Jens Axboe <axboe@suse.de>
To: Andi Kleen <ak@suse.de>
Cc: Andrea Arcangeli <andrea@suse.de>,
Marcelo Tosatti <marcelo@conectiva.com.br>,
linux-kernel@vger.kernel.org
Subject: Re: 2.4.1pre8 slowdown on dbench tests
Date: Fri, 19 Jan 2001 02:47:45 +0100 [thread overview]
Message-ID: <20010119024745.G18209@suse.de> (raw)
In-Reply-To: <Pine.LNX.4.21.0101181449240.4124-100000@freak.distro.conectiva> <20010119011629.C32087@athlon.random> <20010119024023.B18209@suse.de> <20010119024610.A7573@gruyere.muc.suse.de>
In-Reply-To: <20010119024610.A7573@gruyere.muc.suse.de>; from ak@suse.de on Fri, Jan 19, 2001 at 02:46:10AM +0100
On Fri, Jan 19 2001, Andi Kleen wrote:
> > Yes I agree, that values should probably be tweaked a bit. I'll
> > try and squeeze some testing in to generate the best possible
> > values.
>
> Please also add a sysctl. I always feel uncomfortable with such hardcoded
> heuristics. There tends to be always another workload where the heuristic
> fails and manual tuning is useful.
Sure, we can do that. But it should only really make a difference
for low memory machines, otherwise the numbers wouldn't change
so much. So the limits are not really that important, and only
need to be in the ball park.
--
* Jens Axboe <axboe@suse.de>
* SuSE Labs
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next prev parent reply other threads:[~2001-01-19 1:48 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-18 17:17 2.4.1pre8 slowdown on dbench tests Marcelo Tosatti
2001-01-18 20:18 ` Szabolcs Szakacsits
2001-01-19 2:23 ` Szabolcs Szakacsits
2001-01-19 2:13 ` Jens Axboe
2001-01-19 5:49 ` Szabolcs Szakacsits
2001-01-19 0:16 ` Andrea Arcangeli
2001-01-18 23:51 ` Marcelo Tosatti
2001-01-19 1:43 ` Jens Axboe
2001-01-19 1:40 ` Jens Axboe
2001-01-19 1:46 ` Andi Kleen
2001-01-19 1:47 ` Jens Axboe [this message]
2001-01-19 2:08 ` Andi Kleen
2001-01-19 2:10 ` Jens Axboe
-- strict thread matches above, loose matches on Subject: below --
2001-01-18 22:52 Steven Cole
2001-01-18 21:49 ` Marcelo Tosatti
[not found] <01012208583400.01639@spc.esa.lanl.gov>
2001-01-22 20:30 ` Marcelo Tosatti
2001-01-22 23:11 ` Jens Axboe
2001-01-23 20:29 ` Steven Cole
2001-01-23 20:54 ` Jens Axboe
2001-01-24 16:08 ` Steven Cole
2001-01-24 16:44 ` Jens Axboe
2001-01-24 17:03 ` Steven Cole
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