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

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Message-ID: <ea6602021001011757y21c6b859ocdbea233070fb31c@mail.gmail.com>
Date:	Fri, 1 Jan 2010 20:57:35 -0500
From:	Vikram Dhillon <dhillonv10@...il.com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Jens Axboe <jens.axboe@...cle.com>,
	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 Wed, Dec 30, 2009 at 4:53 PM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> 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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Thanks for this update, I guess we I can make like a separate category
of documented regressions because this could be helpful to other
distributions as they update to the newer kernels :D

-- 
Regards,
Vikram Dhillon

~~~
There are lots of Linux users who don't care how the kernel works, but
only want to use it. That is a tribute to how good Linux is.
-- Linus Torvalds
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