On Tue, Oct 11, 2016 at 09:10:13AM +0200, Vlastimil Babka wrote: > Great indeed. Note that meanwhile the patches went to mainline so > we'd definitely welcome testing from the rest of you who had > originally problems with 4.7/4.8 and didn't try the linux-next > recently. So a good point would be to test 4.9-rc1 when it's > released. I hope you don't want to discover regressions again too > late, in the 4.9 final release :) Hello! I have a mixed-purpose HTPCish box running MythTV, etc. that I recently upgraded from 4.6.7 to 4.8.4. This upgrade started OOM killing of various processes even when there is plenty (gigabytes) of memory as page cache. This is with CONFIG_COMPACTION=y, and it occurs with or without swap on. I'm not able to confirm on 4.9-rc2 since nouveau doesn't support NV117 and binary blob nvidia doesn't yet like the changes to get_user_pages. 4.8 includes "prevent premature OOM killer invocation for high order request" which sounds like it should fix the issue, but this certainly does not seem to be the case for me. I copied kern.log and .config here: http://0x.ca/sim/ref/4.8.4/ I see that this is reverted in 4.9-rc and replaced with something else. Unfortunately, I can't test this workload without the nvidia tainting, and "git log --oneline v4.8..v4.9-rc2 mm | grep oom | wc -l" returns 13. Is there some stuff I should cherry-pick to try? Simon- -- 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>