Messages in this thread | | | Date | Sat, 31 Jul 2010 21:09:35 +0300 | Subject | Re: [PATCH] vmscan: raise the bar to PAGEOUT_IO_SYNC stalls | From | Pekka Enberg <> |
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On Sat, Jul 31, 2010 at 8:59 PM, Christoph Hellwig <hch@infradead.org> wrote: > On Sat, Jul 31, 2010 at 08:55:57PM +0300, Pekka Enberg wrote: >> Do you have CONFIG_SLUB enabled? It does high order allocations by >> default for performance reasons. > > Yes. This is a kernel using slub.
You can pass "slub_debug=o" as a kernel parameter to disable higher order allocations if you want to test things. The per-cache default order is calculated in calculate_order() of mm/slub.c. How many CPUs do you have on your system?
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