Return-Path: <linux-kernel-owner+willy=40w.ods.org@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id <S267495AbTBKKud>; Tue, 11 Feb 2003 05:50:33 -0500
Received: (majordomo@vger.kernel.org) by vger.kernel.org
	id <S267507AbTBKKud>; Tue, 11 Feb 2003 05:50:33 -0500
Received: from [195.39.17.254] ([195.39.17.254]:5380 "EHLO Elf.ucw.cz")
	by vger.kernel.org with ESMTP id <S267495AbTBKKub>;
	Tue, 11 Feb 2003 05:50:31 -0500
Date: Mon, 10 Feb 2003 17:47:32 +0100
From: Pavel Machek <pavel@suse.cz>
To: Andrea Arcangeli <andrea@suse.de>
Cc: Con Kolivas <ckolivas@yahoo.com.au>, lkml <linux-kernel@vger.kernel.org>,
       Jens Axboe <axboe@suse.de>
Subject: Re: stochastic fair queueing in the elevator [Re: [BENCHMARK] 2.4.20-ck3 / aa / rmap with contest]
Message-ID: <20030210164730.GC443@elf.ucw.cz>
References: <20030209133013.41763.qmail@web41404.mail.yahoo.com> <20030209144622.GB31401@dualathlon.random>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20030209144622.GB31401@dualathlon.random>
X-Warning: Reading this can be dangerous to your mental health.
User-Agent: Mutt/1.5.3i
Sender: linux-kernel-owner@vger.kernel.org
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 963
Lines: 21

Hi!

> The design I proposed is to have multiple I/O queues, where to apply the
> elevator, and to choose the queue in function of the task->pid that is
> sumbitting the bh/bio. You'll have to apply an hash to the pid and you
> probably want a perturbation timer that will change the hash function
> every 30 sec or so. Plus I want a special queue for everything
> asynchronoys. So that the asynchronoys queue will be elevated and

What about adding speicial queue (queues?) for niced things? That way
nice -20 job would not interfere with normal processes, not even for
I/O.
								Pavel
-- 
Worst form of spam? Adding advertisment signatures ala sourceforge.net.
What goes next? Inserting advertisment *into* email?
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/