On Tue, 21 Sep 2010, Mel Gorman wrote: > > However there's still another question, why is this problem happening at > > all for us? I know almost nothing about NUMA, but from other posts, it > > sounds like the problem is the memory allocations are all happening on > > one node? > > Yes. This could be a screwy hardware issue as pointed out before. Certain controllers restrict the memory that I/O can be done to also (32 bit controller only able to do I/O to lower 2G?, controller on a PCI bus that is local only to a particular node) which would make balancing the file cache difficult. -- 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>