Message-ID: <433F519B.5070505@perkel.com>
Date: Sat, 01 Oct 2005 20:18:51 -0700
From: Marc Perkel <marc@perkel.com>
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To: linux-kernel@vger.kernel.org
Subject: Re: Making nice niser for system hogging programs
References: <433F4563.5060700@perkel.com> <200510021307.10372.kernel@kolivas.org>
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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

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