[dm-devel] Re: Regarding dm-ioband tests
Rik van Riel
riel at redhat.com
Mon Sep 7 13:53:41 UTC 2009
Ryo Tsuruta wrote:
> However, if you want to get fairness in a case like this, a new
> bandwidth control policy which controls accurately according to
> assigned weights can be added to dm-ioband.
Are you saying that dm-ioband is purposely unfair,
until a certain load level is reached?
> We regarded reducing throughput loss rather than reducing duration
> as the design of dm-ioband. Of course, it is possible to make a new
> policy which reduces duration.
... while also reducing overall system throughput
by design?
Why are you even bothering to submit this to the
linux-kernel mailing list, when there is a codebase
available that has no throughput or fairness regressions?
(Vivek's io scheduler based io controler)
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