linux-kernel - [patch 0/4] [RFC] Another proportional weight IO controller

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Message-Id: <20081106153022.215696930@redhat.com>
Date:	Thu, 06 Nov 2008 10:30:22 -0500
From:	vgoyal@...hat.com
To:	linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org,
	virtualization@...ts.linux-foundation.org, jens.axboe@...cle.com,
	Hirokazu Takahashi <taka@...inux.co.jp>,
	Ryo Tsuruta <ryov@...inux.co.jp>,
	Andrea Righi <righi.andrea@...il.com>,
	Satoshi UCHIDA <s-uchida@...jp.nec.com>
Cc:	fernando@....ntt.co.jp, balbir@...ux.vnet.ibm.com,
	Andrew Morton <akpm@...ux-foundation.org>, menage@...gle.com,
	ngupta@...gle.com, Rik van Riel <riel@...hat.com>,
	Jeff Moyer <jmoyer@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>
Subject: [patch 0/4] [RFC] Another proportional weight IO controller 

Hi,

If you are not already tired of so many io controller implementations, here
is another one.

This is a very eary very crude implementation to get early feedback to see
if this approach makes any sense or not.

This controller is a proportional weight IO controller primarily
based on/inspired by dm-ioband. One of the things I personally found little
odd about dm-ioband was need of a dm-ioband device for every device we want
to control.  I thought that probably we can make this control per request
queue and get rid of device mapper driver. This should make configuration
aspect easy.

I have picked up quite some amount of code from dm-ioband especially for
biocgroup implementation.

I have done very basic testing and that is running 2-3 dd commands in different
cgroups on x86_64. Wanted to throw out the code early to get some feedback.

More details about the design and how to are in documentation patch.

Your comments are welcome.

Thanks
Vivek

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