On Tuesday 06 of September 2016, Vlastimil Babka wrote: > After several people reported OOM's for order-2 allocations in 4.7 due to > Michal Hocko's OOM rework, he reverted the part that considered compaction > feedback [1] in the decisions to retry reclaim/compaction. This was to > provide a fix quickly for 4.8 rc and 4.7 stable series, while mmotm had an > almost complete solution that instead improved compaction reliability. > > This series completes the mmotm solution and reintroduces the compaction > feedback into OOM decisions. The first two patches restore the state of > mmotm before the temporary solution was merged, the last patch should be > the missing piece for reliability. The third patch restricts the hardened > compaction to non-costly orders, since costly orders don't result in OOMs > in the first place. > > Some preliminary testing suggested that this approach should work, but I > would like to ask all who experienced the regression to please retest > this. You will need to apply this series on top of tag > mmotm-2016-08-31-16-06 from the mmotm git tree [2]. Thanks in advance!
My "rm -rf copyX; cp -al org copyX" test x10 in parallel worked without any OOM. -- Arkadiusz Miśkiewicz, arekm / ( maven.pl | pld-linux.org )
