linux-kernel - Re: [RFC][PATCH] per-task I/O throttling

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Message-ID: <47878EC1.4000907@users.sourceforge.net>
Date:	Fri, 11 Jan 2008 16:44:01 +0100 (MET)
From:	Andrea Righi <righiandr@...rs.sourceforge.net>
To:	David Newall <david@...idnewall.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Jens Axboe <jens.axboe@...cle.com>
Subject: Re: [RFC][PATCH] per-task I/O throttling

David Newall wrote:
> Andrea Righi wrote:
>> [I/O-intensive] processes can noticeably impact the system responsiveness
>> for some time and playing with tasks' priority is not always an
>> acceptable solution.
>>   
> 
> Why?
> 

Well, I mean, we can't use 'nice' to grant less priority for the I/O
intensive app, because the I/O intensive app itself doesn't need a lot
of CPU. Instead, the I/O-bound app eats all the available I/O bandwidth,
that's a different issue.

-Andrea
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