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SubjectRe: 2.5.59-mm5
Andrew Morton wrote:

So what anticipatory scheduling does is very simple: if an application
has performed a read, do *nothing at all* for a few milliseconds. Just
return to userspace (or to the filesystem) in the expectation that the
application or filesystem will quickly submit another read which is

Do you need to give a process being woken from the read an extra priority
boost to make sure that it actually gets run in your "few milliseconds"
window. It would be a shame to leave the disk idle for the interval, and
then discover that the process scheduler had been running other stuff, so
that the reader didn't get a chance to issue the next read.

-Tony Luck

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