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From: Andrew Morton <akpm@digeo.com>
To: Con Kolivas <conman@kolivas.net>
Cc: Marc-Christian Petersen <m.c.p@wolk-project.de>,
	linux kernel mailing list <linux-kernel@vger.kernel.org>,
	Andrea Arcangeli <andrea@suse.de>
Subject: Re: [PATCH 2.4.20-aa1] Readlatency-2
Date: Fri, 06 Dec 2002 03:36:39 -0800	[thread overview]
Message-ID: <3DF08BC7.62436532@digeo.com> (raw)
In-Reply-To: 200212062045.25377.conman@kolivas.net

Con Kolivas wrote:
> 
> io_load:
> Kernel [runs]           Time    CPU%    Loads   LCPU%   Ratio
> 2.4.20 [5]              203.4   33      40      15      3.07
> 2.4.20aa1 [3]           238.3   27      46      15      3.60
> 2.4.20aa1rl2 [3]        302.5   22      63      16      4.57

Something must have gone wrong here.  rl2 cannot be worse than
2.4.20 in this test.

Umm, quick sanity check:

2.4.20-rl2      321.44  147%    96      24%
2.4.20          361.70  130%    108     24%

So only a 10% speedup, but certainly not a 50% slowdown.  (That is
on scsi).

Maybe a patch preparation problem?

  reply	other threads:[~2002-12-06 11:29 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <200212061038.27387.m.c.p@wolk-project.de>
2002-12-06  9:45 ` [PATCH 2.4.20-aa1] Readlatency-2 Con Kolivas
2002-12-06 11:36   ` Andrew Morton [this message]
2002-12-06 11:41     ` Con Kolivas
2002-12-06 12:00     ` Con Kolivas
2002-12-05 19:49 Marc-Christian Petersen
2002-12-06  1:24 ` Andrea Arcangeli

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