On Sun, 2010-11-14 at 19:12 -0800, Linus Torvalds wrote:

quoted text
> I'm also very happy with just what it does to interactive performance.
> Admittedly, my "testcase" is really trivial (reading email in a
> web-browser, scrolling around a bit, while doing a "make -j64" on the
> kernel at the same time), but it's a test-case that is very relevant
> for me. And it is a _huge_ improvement.

Next logical auto-step would be to try to subvert cfq.  At a glance,
io_context looks highly hackable for !CONFIG_CFQ_GROUP_IOSCHED case.
The other case may get interesting for someone not very familiar with
cfq innards, but I see a tempting looking subversion point.

	-Mike

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