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We would like to see how fragmented the SLUB allocator is, one window into fragmentation is the total number of partial slabs. Currently `slabinfo -X` shows slabs sorted by loss and by size. We can use this option to also show slabs sorted by number of partial slabs. Option '-X' can be used in conjunction with '-N' to control the number of slabs shown e.g. list of top 5 slabs: slabinfo -X -N5 Add list of slabs ordered by number of partial slabs to output of `slabinfo -X`. Link: http://lkml.kernel.org/r/20190426022622.4089-3-tobin@kernel.org Signed-off-by: Tobin C. Harding <tobin@kernel.org> Cc: Alexander Duyck <alexander.duyck@gmail.com> Cc: Brendan Gregg <brendan.d.gregg@gmail.com>, Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Michal Hocko <mhocko@kernel.org> Cc: Pekka Enberg <penberg@iki.fi> Cc: Qian Cai <cai@lca.pw> Cc: Tejun Heo <tj@kernel.org> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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