Messages in this thread | | | Date | Sun, 20 Jan 2008 20:28:44 +0530 | From | Balbir Singh <> | Subject | Re: [PATCH] cgroup: limit block I/O bandwidth |
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* Jens Axboe <jens.axboe@oracle.com> [2008-01-20 15:32:40]:
> On Sun, Jan 20 2008, Andrea Righi wrote: > Your approach is totally flawed, imho. For instance, you don't want a > process to be able to dirty memory at foo mb/sec but only actually > write them out at bar mb/sec. > > The noop-iosched changes are also very buggy. The queue back pointer > breaks reference counting and the task pointer storage assumes the task > will also always be around. That's of course not the case. > > IOW, you are doing this at the wrong level.
Andrea, Some of the problems pointed out so far have been solved in the IO controller from OpenVZ (cc'ing Pavel for inputs).
> > What problem are you trying to solve? > > -- > Jens Axboe >
-- Warm Regards, Balbir Singh Linux Technology Center IBM, ISTL
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