diff options
author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2009-12-16 13:49:27 -0200 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2009-12-16 16:53:37 +0100 |
commit | c351c2816177eb7d2979ec874b9b895abe9d6e5c (patch) | |
tree | b6dd7fb4a5e048168319111e18082025c2e93f1b /tools/perf | |
parent | 125c4fad1e60751ceaab1ee2a73bddf31213e5ca (diff) | |
download | kernel_samsung_tuna-c351c2816177eb7d2979ec874b9b895abe9d6e5c.zip kernel_samsung_tuna-c351c2816177eb7d2979ec874b9b895abe9d6e5c.tar.gz kernel_samsung_tuna-c351c2816177eb7d2979ec874b9b895abe9d6e5c.tar.bz2 |
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>
Diffstat (limited to 'tools/perf')
-rw-r--r-- | tools/perf/Documentation/perf-diff.txt | 29 | ||||
-rw-r--r-- | tools/perf/Documentation/perf-report.txt | 4 | ||||
-rw-r--r-- | tools/perf/builtin-diff.c | 90 | ||||
-rw-r--r-- | tools/perf/builtin-report.c | 12 | ||||
-rw-r--r-- | tools/perf/util/hist.c | 126 | ||||
-rw-r--r-- | tools/perf/util/hist.h | 5 | ||||
-rw-r--r-- | tools/perf/util/sort.c | 11 | ||||
-rw-r--r-- | tools/perf/util/sort.h | 2 |
8 files changed, 169 insertions, 110 deletions
diff --git a/tools/perf/Documentation/perf-diff.txt b/tools/perf/Documentation/perf-diff.txt index 6936fdb..8974e20 100644 --- a/tools/perf/Documentation/perf-diff.txt +++ b/tools/perf/Documentation/perf-diff.txt @@ -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 diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index 9dccb18..abfabe9 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -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 diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c index ff91e9c..66f100d 100644 --- a/tools/perf/builtin-diff.c +++ b/tools/perf/builtin-diff.c @@ -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(); } diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index cf1d370..e50a6b1 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -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); diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index 6e416a6..ecf853c 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -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); diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index c7ac78d..e5f99b2 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -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 */ diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index cff1c31..cb0f327 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -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; + } +} diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h index 925f083..753f9ea 100644 --- a/tools/perf/util/sort.h +++ b/tools/perf/util/sort.h @@ -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 */ |