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Date: Thu, 15 Oct 2015 20:14:30 +0900
From: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org,
Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Subject: [PATCH 5/8] tools/vm/slabinfo: introduce extended totals mode
Add "-X|--Xtotals" opt to output extended totals summary,
which includes:
-- totals summary
-- slabs sorted by size
-- slabs sorted by loss (waste)
Example:
=======
slabinfo --X -N 1
Slabcache Totals
----------------
Slabcaches : 91 Aliases : 120->69 Active: 65
Memory used: 568.3M # Loss : 30.4M MRatio: 5%
# Objects : 920.1K # PartObj: 161.2K ORatio: 17%
Per Cache Average Min Max Total
---------------------------------------------------------
#Objects 14.1K 1 227.8K 920.1K
#Slabs 533 1 11.7K 34.7K
#PartSlab 86 0 4.3K 5.6K
%PartSlab 24% 0% 100% 16%
PartObjs 17 0 129.3K 161.2K
% PartObj 17% 0% 100% 17%
Memory 8.7M 8.1K 384.7M 568.3M
Used 8.2M 160 366.5M 537.9M
Loss 468.8K 0 18.2M 30.4M
Per Object Average Min Max
---------------------------------------------
Memory 587 8 8.1K
User 584 8 8.1K
Loss 2 0 64
Slabs sorted by size
----------------------
Name Objects Objsize Space Slabs/Part/Cpu O/S O %Fr %Ef Flg
ext4_inode_cache 211142 1736 384.7M 11732/40/10 18 3 0 95 a
Slabs sorted by loss
----------------------
Name Objects Objsize Loss Slabs/Part/Cpu O/S O %Fr %Ef Flg
ext4_inode_cache 211142 1736 18.2M 11732/40/10 18 3 0 95 a
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
---
tools/vm/slabinfo.c | 54 +++++++++++++++++++++++++++++++++++++++++++----------
1 file changed, 44 insertions(+), 10 deletions(-)
diff --git a/tools/vm/slabinfo.c b/tools/vm/slabinfo.c
index de4974d..44b83ce 100644
--- a/tools/vm/slabinfo.c
+++ b/tools/vm/slabinfo.c
@@ -81,6 +81,7 @@ int show_ops = 0;
int show_activity = 0;
int output_lines = -1;
int sort_loss;
+int extended_totals;
/* Debug options */
int sanity = 0;
@@ -128,6 +129,7 @@ static void usage(void)
"-1|--1ref Single reference\n"
"-N|--lines=K Show the first K slabs\n"
"-L|--Loss Sort by loss\n"
+ "-X|--Xtotals Show extended summary information\n"
"\nValid debug options (FZPUT may be combined)\n"
"a / A Switch on all debug options (=FZUP)\n"
"- Switch off all debug options\n"
@@ -615,8 +617,7 @@ static void slabcache(struct slabinfo *s)
total_free ? (s->free_fastpath * 100 / total_free) : 0,
s->order_fallback, s->order, s->cmpxchg_double_fail,
s->cmpxchg_double_cpu_fail);
- }
- else
+ } else {
printf("%-21s %8ld %7d %8s %14s %4d %1d %3ld %3ld %s\n",
s->name, s->objects, s->object_size, size_str, dist_str,
s->objs_per_slab, s->order,
@@ -624,6 +625,7 @@ static void slabcache(struct slabinfo *s)
s->slabs ? (s->objects * s->object_size * 100) /
(s->slabs * (page_size << s->order)) : 100,
flags);
+ }
}
/*
@@ -1256,15 +1258,16 @@ static void read_slab_dir(void)
static void output_slabs(void)
{
struct slabinfo *slab;
+ int lines = output_lines;
for (slab = slabinfo; (slab < slabinfo + slabs) &&
- output_lines != 0; slab++) {
+ lines != 0; slab++) {
if (slab->alias)
continue;
- if (output_lines != -1)
- output_lines--;
+ if (lines != -1)
+ lines--;
if (show_numa)
slab_numa(slab, 0);
@@ -1285,6 +1288,30 @@ static void output_slabs(void)
}
}
+static void xtotals(void)
+{
+ totals();
+
+ link_slabs();
+ rename_slabs();
+
+ printf("\nSlabs sorted by size\n");
+ printf("----------------------\n");
+ sort_loss = 0;
+ sort_size = 1;
+ sort_slabs();
+ output_slabs();
+
+ printf("\nSlabs sorted by loss\n");
+ printf("----------------------\n");
+ line = 0;
+ sort_loss = 1;
+ sort_size = 0;
+ sort_slabs();
+ output_slabs();
+ printf("\n");
+}
+
struct option opts[] = {
{ "aliases", no_argument, NULL, 'a' },
{ "activity", no_argument, NULL, 'A' },
@@ -1307,6 +1334,7 @@ struct option opts[] = {
{ "1ref", no_argument, NULL, '1'},
{ "lines", required_argument, NULL, 'N'},
{ "Loss", no_argument, NULL, 'L'},
+ { "Xtotals", no_argument, NULL, 'X'},
{ NULL, 0, NULL, 0 }
};
@@ -1318,7 +1346,7 @@ int main(int argc, char *argv[])
page_size = getpagesize();
- while ((c = getopt_long(argc, argv, "aAd::Defhil1noprstvzTSN:L",
+ while ((c = getopt_long(argc, argv, "aAd::Defhil1noprstvzTSN:LX",
opts, NULL)) != -1)
switch (c) {
case '1':
@@ -1390,6 +1418,11 @@ int main(int argc, char *argv[])
case 'L':
sort_loss = 1;
break;
+ case 'X':
+ if (output_lines == -1)
+ output_lines = 1;
+ extended_totals = 1;
+ break;
default:
fatal("%s: Invalid option '%c'\n", argv[0], optopt);
@@ -1409,12 +1442,13 @@ int main(int argc, char *argv[])
fatal("%s: Invalid pattern '%s' code %d\n",
argv[0], pattern_source, err);
read_slab_dir();
- if (show_alias)
+ if (show_alias) {
alias();
- else
- if (show_totals)
+ } else if (extended_totals) {
+ xtotals();
+ } else if (show_totals) {
totals();
- else {
+ } else {
link_slabs();
rename_slabs();
sort_slabs();
--
2.6.1.134.g4b1fd35
--
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