linux-kernel - Re: Support for global block IO throttling?

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Message-ID: <20110323142505.GD13315@redhat.com>
Date:	Wed, 23 Mar 2011 10:25:05 -0400
From:	Vivek Goyal <vgoyal@...hat.com>
To:	Juerg Haefliger <juergh@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Support for global block IO throttling?

On Wed, Mar 23, 2011 at 02:48:18PM +0100, Juerg Haefliger wrote:
> Hi,
> 
> Are there any plans to support global (per cgroup) IO throttling in
> the near future? I'm in need of this and would gladly work on it if
> nobody else is and if people think this is a useful feature. What I
> envision is that one can specify the limits of individual devices in a
> group but also specify the overall aggregate limit of the whole group.
> I just started looking at the throttling code and haven't quite
> figured it out yet so it might take me a bit to get up to speed.

Hi Juerg,

What's the use case? Why do you need global block IO throttling?

Thanks
Vivek
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