Re: [PATCH] mm: use pagevec to rotate reclaimable page

Andrew Morton
2007-09-18T17:44:54Z

On Tue, 18 Sep 2007 11:29:50 +1000 Nick Piggin <nickpiggin@yahoo.com.au> wrote:

> It would be interesting to test -mm kernels. They have a patch which reduces
> zone lock contention quite a lot.

They do? Which patch?

> I think your patch is a nice idea, and with less zone lock contention in other
> areas, it is possible that it might produce a relatively larger improvement.

I'm a bit wobbly about this patch - it adds additional single-cpu overhead
to reduce multiple-cpu overhead and latency.