[dm-devel] Re: IO scheduler based IO Controller V2

[Andrew Morton]

On Tue,  5 May 2009 15:58:27 -0400
Vivek Goyal <vgoyal at redhat.com> wrote:

> 
> Hi All,
> 
> Here is the V2 of the IO controller patches generated on top of 2.6.30-rc4.
> ...
> Currently primarily two other IO controller proposals are out there.
> 
> dm-ioband
> ---------
> This patch set is from Ryo Tsuruta from valinux.
> ...
> IO-throttling
> -------------
> This patch set is from Andrea Righi provides max bandwidth controller.

I'm thinking we need to lock you guys in a room and come back in 15 minutes.

Seriously, how are we to resolve this?  We could lock me in a room and
cmoe back in 15 days, but there's no reason to believe that I'd emerge
with the best answer.

I tend to think that a cgroup-based controller is the way to go. 
Anything else will need to be wired up to cgroups _anyway_, and that
might end up messy.