On Sun, 2010-04-18 at 15:10 -0400, Sorin Faibish wrote:Let's work together to get this done. This is a very good idea. I will tryOn Sat, 17 Apr 2010 20:32:39 -0400, Andrew Morton
<akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> There are two issues here: stack utilisation and poor IO patterns in
> direct reclaim. They are different.
>
> The poor IO patterns thing is a regression. Some time several years
> ago (around 2.6.16, perhaps), page reclaim started to do a LOT more
> dirty-page writeback than it used to. AFAIK nobody attempted to work
> out why, nor attempted to try to fix it.
I for one am looking very seriously at this problem together with Bruce.
We plan to have a discussion on this topic at the next LSF meeting
in Boston.
As luck would have it, the Memory Management summit is co-located with
the Storage and Filesystem workshop ... how about just planning to lock
all the protagonists in a room if it's not solved by August. The less
extreme might even like to propose topics for the plenary sessions ...
James
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