On Fri, Apr 16, 2010 at 09:40:13AM +1000, Dave Chinner wrote: > On Thu, Apr 15, 2010 at 06:54:16PM +0200, Andi Kleen wrote: > > > It's a buying-time venture, I'll agree but as both approaches are only > > > about reducing stack stack they wouldn't be long-term solutions by your > > > criteria. What do you suggest? > > > > (from easy to more complicated): > > > > - Disable direct reclaim with 4K stacks > > Just to re-iterate: we're blowing the stack with direct reclaim on > x86_64 w/ 8k stacks. Yep, that is not being disputed. By the way, what did you use to generate your report? Was it CONFIG_DEBUG_STACK_USAGE or something else? I used a modified bloat-o-meter to gather my data but it'd be nice to be sure I'm seeing the same things as you (minus XFS unless I specifically set it up). > The old i386/4k stack problem is a red > herring. > > Cheers, > > Dave. > -- > Dave Chinner > david@xxxxxxxxxxxxx > -- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab -- 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>