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| author | Tobin C. Harding <tobin@kernel.org> | 2019-07-11 20:59:42 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-07-12 11:05:46 -0700 |
| commit | 53a83f9766e33d6bf4e14d5592c1939777fb98db (patch) | |
| tree | a99f59c5f4a905671303438e680469700cd6a7eb /tools/vm/slabinfo.c | |
| parent | 1106b205a3fe034beafad24045b7c00a7eb89669 (diff) | |
| download | linux-53a83f9766e33d6bf4e14d5592c1939777fb98db.tar.bz2 | |
tools/vm/slabinfo: add option to sort by partial slabs
We would like to get a better view of the level of fragmentation within
the SLUB allocator. Total number of partial slabs is an indicator of
fragmentation.
Add a command line option (-P | --partial) to sort the slab list by total
number of partial slabs.
Link: http://lkml.kernel.org/r/20190426022622.4089-4-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>
Diffstat (limited to 'tools/vm/slabinfo.c')
| -rw-r--r-- | tools/vm/slabinfo.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/tools/vm/slabinfo.c b/tools/vm/slabinfo.c index 3f3a2db65794..469ff6157986 100644 --- a/tools/vm/slabinfo.c +++ b/tools/vm/slabinfo.c @@ -111,7 +111,7 @@ static void fatal(const char *x, ...) static void usage(void) { printf("slabinfo 4/15/2011. (c) 2007 sgi/(c) 2011 Linux Foundation.\n\n" - "slabinfo [-aABDefhilLnorsStTUvXz1] [N=K] [-dafzput] [slab-regexp]\n" + "slabinfo [-aABDefhilLnoPrsStTUvXz1] [N=K] [-dafzput] [slab-regexp]\n" "-a|--aliases Show aliases\n" "-A|--activity Most active slabs first\n" "-B|--Bytes Show size in bytes\n" @@ -125,6 +125,7 @@ static void usage(void) "-n|--numa Show NUMA information\n" "-N|--lines=K Show the first K slabs\n" "-o|--ops Show kmem_cache_ops\n" + "-P|--partial Sort by number of partial slabs\n" "-r|--report Detailed report on single slabs\n" "-s|--shrink Shrink slabs\n" "-S|--Size Sort by size\n" @@ -1361,6 +1362,7 @@ struct option opts[] = { { "numa", no_argument, NULL, 'n' }, { "lines", required_argument, NULL, 'N'}, { "ops", no_argument, NULL, 'o' }, + { "partial", no_argument, NULL, 'p'}, { "report", no_argument, NULL, 'r' }, { "shrink", no_argument, NULL, 's' }, { "Size", no_argument, NULL, 'S'}, @@ -1382,7 +1384,7 @@ int main(int argc, char *argv[]) page_size = getpagesize(); - while ((c = getopt_long(argc, argv, "aABd::DefhilLnN:orsStTUvXz1", + while ((c = getopt_long(argc, argv, "aABd::DefhilLnN:oPrsStTUvXz1", opts, NULL)) != -1) switch (c) { case 'a': @@ -1436,6 +1438,9 @@ int main(int argc, char *argv[]) case 'r': show_report = 1; break; + case 'P': + sort_partial = 1; + break; case 's': shrink = 1; break; |