On 08/21/2015 01:37 PM, Vlastimil Babka wrote:
That, said, looking at the memory values: rc6: Free+Buffers+A/I(Anon)+A/I(File)+Slab = 6769MB rc7: ... = 4714MB That's 2GB unaccounted for.
So one brute-force way to see who allocated those 2GB is to use the page_owner debug feature. You need to enable CONFIG_PAGE_OWNER and then follow the Usage part of Documentation/vm/page_owner.txt If you can do that, please send the sorted_page_owner.txt for rc7 when it's semi-nearing the exhausted swap. Then you could start doing a comparison run with rc6, but maybe it will be easy to figure from the rc7 log already. Thanks.
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