From: Marc Perkel <marc@perkel.com>
To: linux-kernel@vger.kernel.org
Subject: Re: Making nice niser for system hogging programs
Date: Sat, 01 Oct 2005 20:18:51 -0700 [thread overview]
Message-ID: <433F519B.5070505@perkel.com> (raw)
In-Reply-To: <200510021307.10372.kernel@kolivas.org>
Con Kolivas wrote:
>On Sun, 2 Oct 2005 12:26, Marc Perkel wrote:
>
>
>>Just a thought -----
>>
>>Programs like cp -a /bigdir /backup and rsync usually bring the server
>>to a crawl no matter how much "nice" you put on them. Is there any way
>>to make "nice" smarter in that it limits io as well as processor usage?
>>If cp and rsyne ran a little slower IO wise then everything else could
>>run too.
>>
>>
>
>The latest cfq io scheduler supports io nice levels. By default it links the
>io nice levels to the cpu nice levels so if you use cfq and set your file
>commands nice 19 they will use as little io priority as possible. Note this
>only works on the read side but that makes a dramatic difference already.
>
>Cheers
>Con
>
>
Kewl - so - what version is it in?
--
Marc Perkel - marc@perkel.com
Spam Filter: http://www.junkemailfilter.com
My Blog: http://marc.perkel.com
next prev parent reply other threads:[~2005-10-02 3:18 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-02 2:26 Making nice niser for system hogging programs Marc Perkel
2005-10-02 3:07 ` Con Kolivas
2005-10-02 3:18 ` Marc Perkel [this message]
2005-10-02 3:38 ` Con Kolivas
2005-10-04 21:26 ` Matt Helsley
2005-10-05 10:02 ` Jens Axboe
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