On Wednesday, December 28, 2016 11:31 PM Michal Hocko wrote: > From: Michal Hocko <mho...@suse.com> > > mm_vmscan_lru_shrink_inactive will currently report the number of > scanned and reclaimed pages. This doesn't give us an idea how the > reclaim went except for the overall effectiveness though. Export > and show other counters which will tell us why we couldn't reclaim > some pages. > - nr_dirty, nr_writeback, nr_congested and nr_immediate tells > us how many pages are blocked due to IO > - nr_activate tells us how many pages were moved to the active > list > - nr_ref_keep reports how many pages are kept on the LRU due > to references (mostly for the file pages which are about to > go for another round through the inactive list) > - nr_unmap_fail - how many pages failed to unmap > > All these are rather low level so they might change in future but the > tracepoint is already implementation specific so no tools should be > depending on its stability. > > Signed-off-by: Michal Hocko <mho...@suse.com> > --- Acked-by: Hillf Danton <hillf...@alibaba-inc.com>
