On Sun, 2010-04-18 at 15:10 -0400, Sorin Faibish wrote: > On 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>