On Fri, Dec 05, 2014 at 12:30:37AM +0100, Vlastimil Babka wrote: > Oh, I would think that if you can't allocate single pages, then there's > little wonder that compaction also spends all its time looking for single > free pages. Did that happen just now for the single page allocations, > or was it always the case? This has always been the case with the default min_free_pages and given enough pressure for enough time. I have just been hoping that compaction should be "smart" enough to lest reclaim do its stuff quickly if single page allocations are failing. Raising min_free_kbytes makes these 0 order allocations failures never happen.
Attachment:
pgpgXAK4KgQKx.pgp
Description: PGP signature