forked from Minki/linux
perf diff: Use perf_session__fprintf_hists just like 'perf record'
That means that almost everything you can do with 'perf report'
can be done with 'perf diff', for instance:
$ perf record -f find / > /dev/null
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.062 MB perf.data (~2699
samples) ] $ perf record -f find / > /dev/null
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.062 MB perf.data (~2687
samples) ] perf diff | head -8
9.02% +1.00% find libc-2.10.1.so [.] _IO_vfprintf_internal
2.91% -1.00% find [kernel] [k] __kmalloc
2.85% -1.00% find [kernel] [k] ext4_htree_store_dirent
1.99% -1.00% find [kernel] [k] _atomic_dec_and_lock
2.44% find [kernel] [k] half_md4_transform
$
So if you want to zoom into libc:
$ perf diff --dsos libc-2.10.1.so | head -8
37.34% find [.] _IO_vfprintf_internal
10.34% find [.] __GI_memmove
8.25% +2.00% find [.] _int_malloc
5.07% -1.00% find [.] __GI_mempcpy
7.62% +2.00% find [.] _int_free
$
And if there were multiple commands using libc, it is also
possible to aggregate them all by using --sort symbol:
$ perf diff --dsos libc-2.10.1.so --sort symbol | head -8
37.34% [.] _IO_vfprintf_internal
10.34% [.] __GI_memmove
8.25% +2.00% [.] _int_malloc
5.07% -1.00% [.] __GI_mempcpy
7.62% +2.00% [.] _int_free
$
The displacement column now is off by default, to use it:
perf diff -m --dsos libc-2.10.1.so --sort symbol | head -8
37.34% [.] _IO_vfprintf_internal
10.34% [.] __GI_memmove
8.25% +2.00% [.] _int_malloc
5.07% -1.00% +2 [.] __GI_mempcpy
7.62% +2.00% -1 [.] _int_free
$
Using -t/--field-separator can be used for scripting:
$ perf diff -t, -m --dsos libc-2.10.1.so --sort symbol | head -8
37.34, , ,[.] _IO_vfprintf_internal
10.34, , ,[.] __GI_memmove
8.25,+2.00%, ,[.] _int_malloc
5.07,-1.00%, +2,[.] __GI_mempcpy
7.62,+2.00%, -1,[.] _int_free
6.99,+1.00%, -1,[.] _IO_new_file_xsputn
1.89,-2.00%, +4,[.] __readdir64
$
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1260978567-550-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Arnaldo Carvalho de Melo
Ingo Molnar
parent
125c4fad1e
commit
c351c28161
@ -19,9 +19,32 @@ If no parameters are passed it will assume perf.data.old and perf.data.
|
||||
|
||||
OPTIONS
|
||||
-------
|
||||
-p::
|
||||
--percentage::
|
||||
Show percentages instead of raw counts
|
||||
-d::
|
||||
--dsos=::
|
||||
Only consider symbols in these dsos. CSV that understands
|
||||
file://filename entries.
|
||||
|
||||
-C::
|
||||
--comms=::
|
||||
Only consider symbols in these comms. CSV that understands
|
||||
file://filename entries.
|
||||
|
||||
-S::
|
||||
--symbols=::
|
||||
Only consider these symbols. CSV that understands
|
||||
file://filename entries.
|
||||
|
||||
-s::
|
||||
--sort=::
|
||||
Sort by key(s): pid, comm, dso, symbol.
|
||||
|
||||
-t::
|
||||
--field-separator=::
|
||||
|
||||
Use a special separator character and don't pad with spaces, replacing
|
||||
all occurances of this separator in symbol names (and other output)
|
||||
with a '.' character, that thus it's the only non valid separator.
|
||||
|
||||
-v::
|
||||
--verbose::
|
||||
Be verbose, for instance, show the raw counts in addition to the
|
||||
|
||||
@ -39,6 +39,10 @@ OPTIONS
|
||||
Only consider these symbols. CSV that understands
|
||||
file://filename entries.
|
||||
|
||||
-s::
|
||||
--sort=::
|
||||
Sort by key(s): pid, comm, dso, symbol, parent.
|
||||
|
||||
-w::
|
||||
--field-width=::
|
||||
Force each column width to the provided list, for large terminal
|
||||
|
||||
@ -16,10 +16,10 @@
|
||||
|
||||
#include <stdlib.h>
|
||||
|
||||
static char const *input_old = "perf.data.old",
|
||||
*input_new = "perf.data";
|
||||
static int force;
|
||||
static bool show_percent;
|
||||
static char const *input_old = "perf.data.old",
|
||||
*input_new = "perf.data";
|
||||
static int force;
|
||||
static bool show_displacement;
|
||||
|
||||
static int perf_session__add_hist_entry(struct perf_session *self,
|
||||
struct addr_location *al, u64 count)
|
||||
@ -162,70 +162,6 @@ static void perf_session__match_hists(struct perf_session *old_session,
|
||||
}
|
||||
}
|
||||
|
||||
static size_t hist_entry__fprintf_matched(struct hist_entry *self,
|
||||
unsigned long pos,
|
||||
struct perf_session *session,
|
||||
struct perf_session *pair_session,
|
||||
FILE *fp)
|
||||
{
|
||||
u64 old_count = 0;
|
||||
char displacement[16];
|
||||
size_t printed;
|
||||
|
||||
if (self->pair != NULL) {
|
||||
long pdiff = (long)self->pair->position - (long)pos;
|
||||
old_count = self->pair->count;
|
||||
if (pdiff == 0)
|
||||
goto blank;
|
||||
snprintf(displacement, sizeof(displacement), "%+4ld", pdiff);
|
||||
} else {
|
||||
blank: memset(displacement, ' ', sizeof(displacement));
|
||||
}
|
||||
|
||||
printed = fprintf(fp, "%4lu %5.5s ", pos, displacement);
|
||||
|
||||
if (show_percent) {
|
||||
double old_percent = 0, new_percent = 0, diff;
|
||||
|
||||
if (pair_session->events_stats.total > 0)
|
||||
old_percent = (old_count * 100) / pair_session->events_stats.total;
|
||||
if (session->events_stats.total > 0)
|
||||
new_percent = (self->count * 100) / session->events_stats.total;
|
||||
|
||||
diff = old_percent - new_percent;
|
||||
if (verbose)
|
||||
printed += fprintf(fp, " %3.2f%% %3.2f%%", old_percent, new_percent);
|
||||
|
||||
if ((u64)diff != 0)
|
||||
printed += fprintf(fp, " %+4.2F%%", diff);
|
||||
else
|
||||
printed += fprintf(fp, " ");
|
||||
} else {
|
||||
if (verbose)
|
||||
printed += fprintf(fp, " %9Lu %9Lu", old_count, self->count);
|
||||
printed += fprintf(fp, " %+9Ld", (s64)self->count - (s64)old_count);
|
||||
}
|
||||
|
||||
return printed + fprintf(fp, " %25.25s %s\n",
|
||||
self->map->dso->name, self->sym->name);
|
||||
}
|
||||
|
||||
static size_t perf_session__fprintf_matched_hists(struct perf_session *self,
|
||||
struct perf_session *pair,
|
||||
FILE *fp)
|
||||
{
|
||||
struct rb_node *nd;
|
||||
size_t printed = 0;
|
||||
unsigned long pos = 1;
|
||||
|
||||
for (nd = rb_first(&self->hists); nd; nd = rb_next(nd)) {
|
||||
struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
|
||||
printed += hist_entry__fprintf_matched(he, pos++, self, pair, fp);
|
||||
}
|
||||
|
||||
return printed;
|
||||
}
|
||||
|
||||
static int __cmd_diff(void)
|
||||
{
|
||||
int ret, i;
|
||||
@ -244,7 +180,8 @@ static int __cmd_diff(void)
|
||||
}
|
||||
|
||||
perf_session__match_hists(session[0], session[1]);
|
||||
perf_session__fprintf_matched_hists(session[1], session[0], stdout);
|
||||
perf_session__fprintf_hists(session[1], session[0],
|
||||
show_displacement, stdout);
|
||||
out_delete:
|
||||
for (i = 0; i < 2; ++i)
|
||||
perf_session__delete(session[i]);
|
||||
@ -258,13 +195,13 @@ static const char *const diff_usage[] = {
|
||||
static const struct option options[] = {
|
||||
OPT_BOOLEAN('v', "verbose", &verbose,
|
||||
"be more verbose (show symbol address, etc)"),
|
||||
OPT_BOOLEAN('m', "displacement", &show_displacement,
|
||||
"Show position displacement relative to baseline"),
|
||||
OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
|
||||
"dump raw trace in ASCII"),
|
||||
OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
|
||||
OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
|
||||
"load module symbols - WARNING: use only with -k and LIVE kernel"),
|
||||
OPT_BOOLEAN('p', "percentages", &show_percent,
|
||||
"Don't shorten the pathnames taking into account the cwd"),
|
||||
OPT_BOOLEAN('P', "full-paths", &event_ops.full_paths,
|
||||
"Don't shorten the pathnames taking into account the cwd"),
|
||||
OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
|
||||
@ -273,6 +210,11 @@ static const struct option options[] = {
|
||||
"only consider symbols in these comms"),
|
||||
OPT_STRING('S', "symbols", &symbol_conf.sym_list_str, "symbol[,symbol...]",
|
||||
"only consider these symbols"),
|
||||
OPT_STRING('s', "sort", &sort_order, "key[,key2...]",
|
||||
"sort by key(s): pid, comm, dso, symbol, parent"),
|
||||
OPT_STRING('t', "field-separator", &symbol_conf.field_sep, "separator",
|
||||
"separator for columns, no spaces will be added between "
|
||||
"columns '.' is reserved."),
|
||||
OPT_END()
|
||||
};
|
||||
|
||||
@ -289,10 +231,16 @@ int cmd_diff(int argc, const char **argv, const char *prefix __used)
|
||||
input_new = argv[0];
|
||||
}
|
||||
|
||||
symbol_conf.exclude_other = false;
|
||||
if (symbol__init() < 0)
|
||||
return -1;
|
||||
|
||||
setup_sorting(diff_usage, options);
|
||||
setup_pager();
|
||||
|
||||
sort_entry__setup_elide(&sort_dso, symbol_conf.dso_list, "dso", NULL);
|
||||
sort_entry__setup_elide(&sort_comm, symbol_conf.comm_list, "comm", NULL);
|
||||
sort_entry__setup_elide(&sort_sym, symbol_conf.sym_list, "symbol", NULL);
|
||||
|
||||
return __cmd_diff();
|
||||
}
|
||||
|
||||
@ -225,7 +225,7 @@ static int __cmd_report(void)
|
||||
perf_session__collapse_resort(session);
|
||||
perf_session__output_resort(session, session->events_stats.total);
|
||||
fprintf(stdout, "# Samples: %ld\n#\n", session->events_stats.total);
|
||||
perf_session__fprintf_hists(session, stdout);
|
||||
perf_session__fprintf_hists(session, NULL, false, stdout);
|
||||
if (sort_order == default_sort_order &&
|
||||
parent_pattern == default_parent_pattern)
|
||||
fprintf(stdout, "#\n# (For a higher level overview, try: perf report --sort comm,dso)\n#\n");
|
||||
@ -344,16 +344,6 @@ static const struct option options[] = {
|
||||
OPT_END()
|
||||
};
|
||||
|
||||
static void sort_entry__setup_elide(struct sort_entry *self,
|
||||
struct strlist *list,
|
||||
const char *list_name, FILE *fp)
|
||||
{
|
||||
if (list && strlist__nr_entries(list) == 1) {
|
||||
fprintf(fp, "# %s: %s\n", list_name, strlist__entry(list, 0)->s);
|
||||
self->elide = true;
|
||||
}
|
||||
}
|
||||
|
||||
int cmd_report(int argc, const char **argv, const char *prefix __used)
|
||||
{
|
||||
argc = parse_options(argc, argv, options, report_usage, 0);
|
||||
|
||||
@ -454,34 +454,80 @@ static size_t hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
|
||||
return ret;
|
||||
}
|
||||
|
||||
static size_t hist_entry__fprintf(FILE *fp, struct hist_entry *self,
|
||||
struct perf_session *session)
|
||||
static size_t hist_entry__fprintf(struct hist_entry *self,
|
||||
struct perf_session *session,
|
||||
struct perf_session *pair_session,
|
||||
bool show_displacement,
|
||||
long displacement, FILE *fp)
|
||||
{
|
||||
struct sort_entry *se;
|
||||
u64 count, total;
|
||||
const char *sep = symbol_conf.field_sep;
|
||||
size_t ret;
|
||||
|
||||
if (symbol_conf.exclude_other && !self->parent)
|
||||
return 0;
|
||||
|
||||
if (session->events_stats.total)
|
||||
ret = percent_color_fprintf(fp,
|
||||
symbol_conf.field_sep ? "%.2f" : " %6.2f%%",
|
||||
(self->count * 100.0) / session->events_stats.total);
|
||||
if (pair_session) {
|
||||
count = self->pair ? self->pair->count : 0;
|
||||
total = pair_session->events_stats.total;
|
||||
} else {
|
||||
count = self->count;
|
||||
total = session->events_stats.total;
|
||||
}
|
||||
|
||||
if (total)
|
||||
ret = percent_color_fprintf(fp, sep ? "%.2f" : " %6.2f%%",
|
||||
(count * 100.0) / total);
|
||||
else
|
||||
ret = fprintf(fp, symbol_conf.field_sep ? "%lld" : "%12lld ", self->count);
|
||||
ret = fprintf(fp, sep ? "%lld" : "%12lld ", count);
|
||||
|
||||
if (symbol_conf.show_nr_samples) {
|
||||
if (symbol_conf.field_sep)
|
||||
fprintf(fp, "%c%lld", *symbol_conf.field_sep, self->count);
|
||||
if (sep)
|
||||
fprintf(fp, "%c%lld", *sep, count);
|
||||
else
|
||||
fprintf(fp, "%11lld", self->count);
|
||||
fprintf(fp, "%11lld", count);
|
||||
}
|
||||
|
||||
if (pair_session) {
|
||||
char bf[32];
|
||||
double old_percent = 0, new_percent = 0, diff;
|
||||
|
||||
if (total > 0)
|
||||
old_percent = (count * 100) / total;
|
||||
if (session->events_stats.total > 0)
|
||||
new_percent = (self->count * 100) / session->events_stats.total;
|
||||
|
||||
diff = old_percent - new_percent;
|
||||
|
||||
if ((u64)diff != 0)
|
||||
snprintf(bf, sizeof(bf), "%+4.2F%%", diff);
|
||||
else
|
||||
snprintf(bf, sizeof(bf), " ");
|
||||
|
||||
if (sep)
|
||||
ret += fprintf(fp, "%c%s", *sep, bf);
|
||||
else
|
||||
ret += fprintf(fp, "%11.11s", bf);
|
||||
|
||||
if (show_displacement) {
|
||||
if (displacement)
|
||||
snprintf(bf, sizeof(bf), "%+4ld", displacement);
|
||||
else
|
||||
snprintf(bf, sizeof(bf), " ");
|
||||
|
||||
if (sep)
|
||||
fprintf(fp, "%c%s", *sep, bf);
|
||||
else
|
||||
fprintf(fp, "%6.6s", bf);
|
||||
}
|
||||
}
|
||||
|
||||
list_for_each_entry(se, &hist_entry__sort_list, list) {
|
||||
if (se->elide)
|
||||
continue;
|
||||
|
||||
fprintf(fp, "%s", symbol_conf.field_sep ?: " ");
|
||||
fprintf(fp, "%s", sep ?: " ");
|
||||
ret += se->print(fp, self, se->width ? *se->width : 0);
|
||||
}
|
||||
|
||||
@ -504,29 +550,49 @@ static size_t hist_entry__fprintf(FILE *fp, struct hist_entry *self,
|
||||
return ret;
|
||||
}
|
||||
|
||||
size_t perf_session__fprintf_hists(struct perf_session *self, FILE *fp)
|
||||
size_t perf_session__fprintf_hists(struct perf_session *self,
|
||||
struct perf_session *pair,
|
||||
bool show_displacement, FILE *fp)
|
||||
{
|
||||
struct hist_entry *pos;
|
||||
struct sort_entry *se;
|
||||
struct rb_node *nd;
|
||||
size_t ret = 0;
|
||||
unsigned long position = 1;
|
||||
long displacement = 0;
|
||||
unsigned int width;
|
||||
const char *sep = symbol_conf.field_sep;
|
||||
char *col_width = symbol_conf.col_width_list_str;
|
||||
|
||||
init_rem_hits();
|
||||
|
||||
fprintf(fp, "# Overhead");
|
||||
fprintf(fp, "# %s", pair ? "Baseline" : "Overhead");
|
||||
|
||||
if (symbol_conf.show_nr_samples) {
|
||||
if (symbol_conf.field_sep)
|
||||
fprintf(fp, "%cSamples", *symbol_conf.field_sep);
|
||||
if (sep)
|
||||
fprintf(fp, "%cSamples", *sep);
|
||||
else
|
||||
fputs(" Samples ", fp);
|
||||
}
|
||||
|
||||
if (pair) {
|
||||
if (sep)
|
||||
ret += fprintf(fp, "%cDelta", *sep);
|
||||
else
|
||||
ret += fprintf(fp, " Delta ");
|
||||
|
||||
if (show_displacement) {
|
||||
if (sep)
|
||||
ret += fprintf(fp, "%cDisplacement", *sep);
|
||||
else
|
||||
ret += fprintf(fp, " Displ");
|
||||
}
|
||||
}
|
||||
|
||||
list_for_each_entry(se, &hist_entry__sort_list, list) {
|
||||
if (se->elide)
|
||||
continue;
|
||||
if (symbol_conf.field_sep) {
|
||||
fprintf(fp, "%c%s", *symbol_conf.field_sep, se->header);
|
||||
if (sep) {
|
||||
fprintf(fp, "%c%s", *sep, se->header);
|
||||
continue;
|
||||
}
|
||||
width = strlen(se->header);
|
||||
@ -545,12 +611,17 @@ size_t perf_session__fprintf_hists(struct perf_session *self, FILE *fp)
|
||||
}
|
||||
fprintf(fp, "\n");
|
||||
|
||||
if (symbol_conf.field_sep)
|
||||
if (sep)
|
||||
goto print_entries;
|
||||
|
||||
fprintf(fp, "# ........");
|
||||
if (symbol_conf.show_nr_samples)
|
||||
fprintf(fp, " ..........");
|
||||
if (pair) {
|
||||
fprintf(fp, " ..........");
|
||||
if (show_displacement)
|
||||
fprintf(fp, " .....");
|
||||
}
|
||||
list_for_each_entry(se, &hist_entry__sort_list, list) {
|
||||
unsigned int i;
|
||||
|
||||
@ -565,14 +636,23 @@ size_t perf_session__fprintf_hists(struct perf_session *self, FILE *fp)
|
||||
for (i = 0; i < width; i++)
|
||||
fprintf(fp, ".");
|
||||
}
|
||||
fprintf(fp, "\n");
|
||||
|
||||
fprintf(fp, "#\n");
|
||||
fprintf(fp, "\n#\n");
|
||||
|
||||
print_entries:
|
||||
for (nd = rb_first(&self->hists); nd; nd = rb_next(nd)) {
|
||||
pos = rb_entry(nd, struct hist_entry, rb_node);
|
||||
ret += hist_entry__fprintf(fp, pos, self);
|
||||
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
|
||||
|
||||
if (show_displacement) {
|
||||
if (h->pair != NULL)
|
||||
displacement = ((long)h->pair->position -
|
||||
(long)position);
|
||||
else
|
||||
displacement = 0;
|
||||
++position;
|
||||
}
|
||||
ret += hist_entry__fprintf(h, self, pair, show_displacement,
|
||||
displacement, fp);
|
||||
}
|
||||
|
||||
free(rem_sq_bracket);
|
||||
|
||||
@ -21,6 +21,7 @@ void hist_entry__free(struct hist_entry *);
|
||||
|
||||
void perf_session__output_resort(struct perf_session *self, u64 total_samples);
|
||||
void perf_session__collapse_resort(struct perf_session *self);
|
||||
size_t perf_session__fprintf_hists(struct perf_session *self, FILE *fp);
|
||||
|
||||
size_t perf_session__fprintf_hists(struct perf_session *self,
|
||||
struct perf_session *pair,
|
||||
bool show_displacement, FILE *fp);
|
||||
#endif /* __PERF_HIST_H */
|
||||
|
||||
@ -303,3 +303,14 @@ void setup_sorting(const char * const usagestr[], const struct option *opts)
|
||||
|
||||
free(str);
|
||||
}
|
||||
|
||||
void sort_entry__setup_elide(struct sort_entry *self, struct strlist *list,
|
||||
const char *list_name, FILE *fp)
|
||||
{
|
||||
if (list && strlist__nr_entries(list) == 1) {
|
||||
if (fp != NULL)
|
||||
fprintf(fp, "# %s: %s\n", list_name,
|
||||
strlist__entry(list, 0)->s);
|
||||
self->elide = true;
|
||||
}
|
||||
}
|
||||
|
||||
@ -101,5 +101,7 @@ extern int64_t sort__sym_cmp(struct hist_entry *, struct hist_entry *);
|
||||
extern int64_t sort__parent_cmp(struct hist_entry *, struct hist_entry *);
|
||||
extern size_t sort__parent_print(FILE *, struct hist_entry *, unsigned int);
|
||||
extern int sort_dimension__add(const char *);
|
||||
void sort_entry__setup_elide(struct sort_entry *self, struct strlist *list,
|
||||
const char *list_name, FILE *fp);
|
||||
|
||||
#endif /* __PERF_SORT_H */
|
||||
|
||||
Loading…
Reference in New Issue
Block a user