From 016c6cdf3df8b05a23ff7b0e77aa7f4fe83e700d Mon Sep 17 00:00:00 2001 From: Sergey Senozhatsky Date: Thu, 5 Nov 2015 18:45:28 -0800 Subject: [PATCH] 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 Cc: Christoph Lameter Cc: Pekka Enberg Cc: David Rientjes Cc: Joonsoo Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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(); -- 2.7.4