linux-kernel - Re: [PATCH 0/2] dm-ioband: I/O bandwidth controller v1.8.0: Introduction

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Date:	Wed, 22 Oct 2008 17:05:36 +0900 (JST)
From:	Ryo Tsuruta <ryov@...inux.co.jp>
To:	zumeng.chen@...driver.com
Cc:	bruce.ashfield@...driver.com, haotian.zhang@...driver.com,
	linux-kernel@...r.kernel.org, dm-devel@...hat.com,
	containers@...ts.linux-foundation.org,
	virtualization@...ts.linux-foundation.org,
	xen-devel@...ts.xensource.com, fernando@....ntt.co.jp
Subject: Re: [PATCH 0/2] dm-ioband: I/O bandwidth controller v1.8.0:
 Introduction

Hi Chen,

> Chen Zumeng wrote:
> > Hi, Ryo Tsuruta
> > And our test team want to test bio_tracking as your benchmark reports,
> > so would you please send me your test codes? Thanks in advance.
> Hi Ryo Tsuruta,
> 
> I wonder if you received last email, so I reply this email to ask
> for your bio_tracking test codes to generate your benchmark reports
> as shown in your website. Thanks in advance :)

I've uploaded two scripts here:
http://people.valinux.co.jp/~ryov/dm-ioband/scripts/xdd-count.sh
http://people.valinux.co.jp/~ryov/dm-ioband/scripts/xdd-size.sh

xdd-count.sh controls bandwidth based on the number of I/O requests,
and xdd-size.sh controls bandwidth based onthe number of I/O sectors.
Theses scritpts require xdd disk I/O testing tool which can be
downloaded from here:
http://www.ioperformance.com/products.htm

Please feel free to ask me questions if you have any questions.

> > P.S. The following are my changes to avoid schedule_timeout:

Thanks, but your patch seems to cause a problem when ioband devices
which have the same name are created at the same time. I will fix the
issue in the next release.

Thanks,
Ryo Tsuruta
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