Messages in this thread | | | Date | Mon, 6 Aug 2007 12:11:13 -0700 (PDT) | From | Christoph Lameter <> | Subject | Re: [PATCH 02/10] mm: system wide ALLOC_NO_WATERMARK |
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On Mon, 6 Aug 2007, Peter Zijlstra wrote:
> > > 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. > > Do note that these are only PF_MEMALLOC allocations that will break the > cpuset. And one can argue that these are not application allocation but > system allocations.
This is global, global locking etc etc. On a large NUMA system this will cause significant delays. One fears that a livelock may result.
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