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From: "Miquel van Smoorenburg" <miquels@cistron.nl>
To: linux-kernel@vger.kernel.org
Subject: Re: High load average on disk I/O on 2.6.17-rc3
Date: Mon, 8 May 2006 16:02:46 +0000 (UTC)	[thread overview]
Message-ID: <e3nq36$vnq$1@news.cistron.nl> (raw)
In-Reply-To: <20060508154217.GH1875@harddisk-recovery.com>

In article <20060508154217.GH1875@harddisk-recovery.com>,
Erik Mouw  <erik@harddisk-recovery.com> wrote:
>On Mon, May 08, 2006 at 05:31:29PM +0200, Arjan van de Ven wrote:
>> On Mon, 2006-05-08 at 17:22 +0200, Erik Mouw wrote:
>> > ... except that any kernel < 2.6 didn't account tasks waiting for disk
>> > IO.
>> 
>> they did. It was "D" state, which counted into load average.
>
>They did not or at least to a much lesser extent.

I just looked at the 2.4.9 (random 2.4 kernel) source code, and
kernel/timer.c::count_active_tasks(), which is what calculates the
load average, uses the same algorithm as in 2.6.16

Mike.


  parent reply	other threads:[~2006-05-08 16:02 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-05-05 17:10 Jason Schoonover
2006-05-06 23:03 ` bert hubert
2006-05-07  1:02   ` Jason Schoonover
2006-05-07 10:54     ` bert hubert
2006-05-07 16:50 ` Andrew Morton
2006-05-07 17:24   ` Jason Schoonover
2006-05-08 11:13   ` Erik Mouw
2006-05-08 11:22     ` Arjan van de Ven
2006-05-08 11:28       ` Russell King
2006-05-08 11:38         ` Avi Kivity
2006-05-08 12:37         ` Arjan van de Ven
2006-05-09 14:37         ` Bill Davidsen
2006-05-08 14:24   ` Martin J. Bligh
2006-05-08 14:55     ` Arjan van de Ven
2006-05-08 15:22       ` Erik Mouw
2006-05-08 15:25         ` Martin J. Bligh
2006-05-08 15:31         ` Arjan van de Ven
2006-05-08 15:42           ` Erik Mouw
2006-05-08 16:02             ` Martin J. Bligh
2006-05-08 16:02             ` Miquel van Smoorenburg [this message]
2006-05-08 16:47             ` Russell King
2006-05-08 17:04               ` Gabor Gombas
2006-05-08 17:18             ` Mike Galbraith
2006-05-09  1:57           ` Nick Piggin
2006-05-09  2:02             ` Martin Bligh
2006-05-09  2:16               ` Nick Piggin
2006-05-09  4:36             ` Arjan van de Ven
2006-05-09  4:46               ` Nick Piggin
2006-05-09  5:27                 ` Hua Zhong
2006-05-09  5:03               ` David Lang
2006-05-15  7:46                 ` Sander
2006-05-08 22:24         ` Bernd Eckenfels
2006-05-08 22:39           ` Lee Revell
2006-05-09  0:08           ` Peter Williams
2006-05-09 18:33           ` Bill Davidsen
     [not found] <69c8K-3Bu-57@gated-at.bofh.it>
2006-05-05 23:12 ` Robert Hancock
2006-05-06  4:39   ` Jason Schoonover
2006-05-06 17:20     ` Robert Hancock
2006-05-06 18:23       ` Jason Schoonover
2006-05-06 20:01         ` Robert Hancock

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