Andrea Righi wrote:
quoted text
> The goal of the i/o bandwidth controller is to improve i/o performance
> predictability and provide better QoS for different cgroups sharing the same
> block devices.
> 
> Respect to other priority/weight-based solutions the approach used by this
> controller is to explicitly choke applications' requests that directly (or
> indirectly) generate i/o activity in the system.
> 
> The direct bandwidth limiting method has the advantage of improving the
> performance predictability at the cost of reducing, in general, the overall
> performance of the system (in terms of throughput).
> 
> Detailed informations about design, its goal and usage are described in the
> documentation.
> 

I'll read through the documentation and comment.

quoted text
> Tested against latest git (2.6.26-rc5).
> 
> The all-in-one patch can be found at:
> http://download.systemimager.org/~arighi/linux/patches/io-throttle/
> 

Cool! thanks for doing this, it's useful.

quoted text
> Previous version and test report can be found here:
> http://lkml.org/lkml/2008/5/24/97


-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL
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