Messages in this thread | | | Date | Thu, 12 May 2011 20:04:57 +0200 | From | Andrea Arcangeli <> | Subject | Re: [PATCH 0/3] Reduce impact to overall system of SLUB using high-order allocations |
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Hi James!
On Wed, May 11, 2011 at 05:34:27PM -0500, James Bottomley wrote: > Yes, but only once in all the testing. With patches 1 and 2 the hang is
Weird patch 2 makes the large order allocation without ~__GFP_WAIT, so even COMPACTION=y/n shouldn't matter anymore. Am I misreading something Mel?
Removing ~__GFP_WAIT from patch 2 (and adding ~__GFP_REPEAT as a correctness improvement) and setting COMPACTION=y also should work ok.
Removing ~__GFP_WAIT from patch 2 and setting COMPACTION=n is expected not to work well.
But compaction should only make the difference if you remove ~__GFP_WAIT from patch 2.
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