leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

perf report: Introduce -n/--show-nr-samples

Browse Source 
[acme@doppio pahole]$ perf report -ns comm,dso,symbol -d /lib64/libc-2.10.1.so -C pahole | head -17
    21.94%      32101  [.] _int_malloc
    20.10%      29402  [.] __GI_strcmp
    16.77%      24533  [.] __tsearch
    12.61%      18450  [.] malloc_consolidate
     6.42%       9394  [.] _int_free
     6.28%       9191  [.] __tfind
     4.56%       6678  [.] __GI___libc_free
     4.46%       6520  [.] _IO_vfprintf_internal
     2.59%       3786  [.] __malloc
     1.17%       1716  [.] __GI_memcpy
[acme@doppio pahole]$

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <1247325517-12272-5-git-send-email-acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Arnaldo Carvalho de Melo 2009-07-11 12:18:37 -03:00 committed by Ingo Molnar
parent a25e46c463
commit e3d7e183dc
2 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
tools/perf/Documentation/perf-report.txt
View File

@ -24,6 +24,9 @@ OPTIONS
--dsos=::
Only consider symbols in these dsos. CSV that understands
file://filename entries.
-n
--show-nr-samples
Show the number of samples for each symbol
-C::
--comms=::
Only consider symbols in these comms. CSV that understands

18
tools/perf/builtin-report.c
View File

@ -51,6 +51,7 @@ static int verbose;
static int modules;
static int full_paths;
static int show_nr_samples;
static unsigned long page_size;
static unsigned long mmap_window = 32;
@ -1024,6 +1025,13 @@ hist_entry__fprintf(FILE *fp, struct hist_entry *self, u64 total_samples)
else
ret = fprintf(fp, field_sep ? "%lld" : "%12lld ", self->count);
if (show_nr_samples) {
if (field_sep)
fprintf(fp, "%c%lld", *field_sep, self->count);
else
fprintf(fp, "%11lld", self->count);
}
list_for_each_entry(se, &hist_entry__sort_list, list) {
if (se->elide)
continue;
@ -1361,6 +1369,12 @@ static size_t output__fprintf(FILE *fp, u64 total_samples)
fprintf(fp, "#\n");
fprintf(fp, "# Overhead");
if (show_nr_samples) {
if (field_sep)
fprintf(fp, "%cSamples", *field_sep);
else
fputs(" Samples ", fp);
}
list_for_each_entry(se, &hist_entry__sort_list, list) {
if (se->elide)
continue;
@ -1388,6 +1402,8 @@ static size_t output__fprintf(FILE *fp, u64 total_samples)
goto print_entries;
fprintf(fp, "# ........");
if (show_nr_samples)
fprintf(fp, " ..........");
list_for_each_entry(se, &hist_entry__sort_list, list) {
unsigned int i;
@ -1979,6 +1995,8 @@ static const struct option options[] = {
OPT_STRING('k', "vmlinux", &vmlinux, "file", "vmlinux pathname"),
OPT_BOOLEAN('m', "modules", &modules,
"load module symbols - WARNING: use only with -k and LIVE kernel"),
OPT_BOOLEAN('n', "show-nr-samples", &show_nr_samples,
"Show a column with the number of samples"),
OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
"sort by key(s): pid, comm, dso, symbol, parent"),
OPT_BOOLEAN('P', "full-paths", &full_paths,