On Monday 06 August 2007 11:11, Christoph Lameter wrote: > On Mon, 6 Aug 2007, Peter Zijlstra wrote: > > Change ALLOC_NO_WATERMARK page allocation such that dipping into > > the reserves becomes a system wide event. > > Shudder. That can just be a desaster for NUMA. Both performance wise > and logic wise. One cpuset being low on memory should not affect > applications in other cpusets.
Currently your system likely would have died here, so ending up with a reserve page temporarily on the wrong node is already an improvement. I agree that the reserve pool should be per-node in the end, but I do not think that serves the interest of simplifying the initial patch set. How about a numa performance patch that adds onto the end of Peter's series? Regards, Daniel - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
