[Devel] Re: [PATCH] cgroup for disk quota

[anqin]

> from the perspective of an application developer, this approach would
> be perfect if we could have some IO bandwidth reservation mechanism
> like disk.usage_io_usage (perhaps per disk...).
>

Indeed, that is my next job (exactly, current job).

Although Paolo Valente has presented a solution of I/O bandwidth control
(see http://lwn.net/Articles/309400/), I would more like to present
bandwidth reservation mechanism, especially for data-intensive
applications (e.g. hadoop cluster).

This kind of applications take more account of the reservation of
I/O bandwidth and netword bandwidth.
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