On Mon, 17 Jun 2013, Roman Gushchin wrote: > > FWIW, there were some compaction locking related patches merged > > around 3.7. See 2a1402aa044b55c2d30ab0ed9405693ef06fb07c and follow ups. > > Thanks, Michal. > I've already tried to backport some of those patches, but it didn't help > (may be it wasn't enough). They certainly aren't enough, the kernel you're running suffers from a couple different memory compaction issues that were fixed in 3.7. I couldn't sympathize with your situation more, I faced the same issue because of thp and not slub (we use slab). > I'll try to reproduce the issue on raw 3.9. > Thanks. If you need to go back to 3.4, try using these, they significantly helped our issues: bb13ffeb9f6bfeb301443994dfbf29f91117dfb3 627260595ca6abcb16d68a3732bac6b547e112d6 c89511ab2f8fe2b47585e60da8af7fd213ec877e 62997027ca5b3d4618198ed8b1aba40b61b1137b a9aacbccf3145355190d87f0df1731fb84fdd8c8 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>