mirror of
https://github.com/torvalds/linux
synced 2024-09-06 18:01:05 +00:00
tools/vm/slabinfo: add partial slab listing to -X
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>
This commit is contained in:
parent
d914999689
commit
1106b205a3
|
@ -79,6 +79,7 @@ int sort_size;
|
|||
int sort_active;
|
||||
int set_debug;
|
||||
int show_ops;
|
||||
int sort_partial;
|
||||
int show_activity;
|
||||
int output_lines = -1;
|
||||
int sort_loss;
|
||||
|
@ -1047,6 +1048,8 @@ static void sort_slabs(void)
|
|||
result = slab_activity(s1) < slab_activity(s2);
|
||||
else if (sort_loss)
|
||||
result = slab_waste(s1) < slab_waste(s2);
|
||||
else if (sort_partial)
|
||||
result = s1->partial < s2->partial;
|
||||
else
|
||||
result = strcasecmp(s1->name, s2->name);
|
||||
|
||||
|
@ -1307,27 +1310,39 @@ static void output_slabs(void)
|
|||
}
|
||||
}
|
||||
|
||||
static void _xtotals(char *heading, char *underline,
|
||||
int loss, int size, int partial)
|
||||
{
|
||||
printf("%s%s", heading, underline);
|
||||
line = 0;
|
||||
sort_loss = loss;
|
||||
sort_size = size;
|
||||
sort_partial = partial;
|
||||
sort_slabs();
|
||||
output_slabs();
|
||||
}
|
||||
|
||||
static void xtotals(void)
|
||||
{
|
||||
char *heading, *underline;
|
||||
|
||||
totals();
|
||||
|
||||
link_slabs();
|
||||
rename_slabs();
|
||||
|
||||
printf("\nSlabs sorted by size\n");
|
||||
printf("--------------------\n");
|
||||
sort_loss = 0;
|
||||
sort_size = 1;
|
||||
sort_slabs();
|
||||
output_slabs();
|
||||
heading = "\nSlabs sorted by size\n";
|
||||
underline = "--------------------\n";
|
||||
_xtotals(heading, underline, 0, 1, 0);
|
||||
|
||||
heading = "\nSlabs sorted by loss\n";
|
||||
underline = "--------------------\n";
|
||||
_xtotals(heading, underline, 1, 0, 0);
|
||||
|
||||
heading = "\nSlabs sorted by number of partial slabs\n";
|
||||
underline = "---------------------------------------\n";
|
||||
_xtotals(heading, underline, 0, 0, 1);
|
||||
|
||||
printf("\nSlabs sorted by loss\n");
|
||||
printf("--------------------\n");
|
||||
line = 0;
|
||||
sort_loss = 1;
|
||||
sort_size = 0;
|
||||
sort_slabs();
|
||||
output_slabs();
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
|
|
Loading…
Reference in a new issue