linux-kernel - Re: [Bug #14940] cfq-iosched: tiobench regression

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Message-Id: <200912302253.53285.rjw@sisk.pl>
Date:	Wed, 30 Dec 2009 22:53:53 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Corrado Zoccolo <czoccolo@...il.com>,
	Gui Jianfeng <guijianfeng@...fujitsu.com>,
	Shaohua Li <shaohua.li@...el.com>
Subject: Re: [Bug #14940] cfq-iosched: tiobench regression

On Wednesday 30 December 2009, Jens Axboe wrote:
> On Tue, Dec 29 2009, Rafael J. Wysocki wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> > 
> > The following bug entry is on the current list of known regressions
> > from 2.6.32.  Please verify if it still should be listed and let me know
> > (either way).
> > 
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14940
> > Subject		: cfq-iosched: tiobench regression
> > Submitter	: Shaohua Li <shaohua.li@...el.com>
> > Date		: 2009-12-24 0:55 (6 days old)
> > References	: http://marc.info/?l=linux-kernel&m=126161612401994&w=4
> 
> I don't think this should be labelled as a regression. It was already
> known that we'd have less throughput for the many clients cases, it was
> a trade off that was made to improve latencies.

OK, I've closed it as "documented".

Rafael
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