No, I've had it happen with NUMA turned off. The NUMA issues are with zone_reclaim_mode. If you have it set to 1 (default on a lot of big machines) it can cause serious problems with performance as well.
On Fri, Apr 12, 2013 at 3:21 PM, Claudio Freire <klaussfre...@gmail.com>wrote: > On Fri, Apr 12, 2013 at 6:15 PM, Scott Marlowe <scott.marl...@gmail.com> > wrote: > > The really messed up bit is that the problems with the kswapd won't show > up > > for weeks, months, or sometimes even longer. The symptoms of a kswapd > > problem is that swap is mostly full, but there's LOTS of free memory / > > kernel cache, and the kswapd is busily swapping in / out. Page faults > > skyrocket and the problem can last for a few minutes or a few hours, then > > clear up and not occur again for a long time. > > Isn't that a NUMA issue? > -- To understand recursion, one must first understand recursion.
