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perf trace: Add duration filter

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Example:

[acme@sandy linux]$ perf trace --duration 0.025 usleep 1
     2.221 ( 0.958 ms): 6724 execve(arg0: 140733557168278, arg1: 140733557178768, arg2: 16134304, arg3: 140733557167840, arg4: 7955998171588342573, arg5: 6723) = -2
     3.690 ( 1.443 ms): 6724 execve(arg0: 140733557168295, arg1: 140733557178768, arg2: 16134304, arg3: 140733557167840, arg4: 7955998171588342573, arg5: 6723) = 0
     3.979 ( 0.048 ms): 6724 open(filename: 208733843841, flags: 0, mode: 1                        ) = 3
     4.071 ( 0.075 ms): 6724 open(filename: 139744419925673, flags: 0, mode: 0                     ) = 3
     4.318 ( 0.056 ms): 6724 nanosleep(rqtp: 140734030404608, rmtp: 0                              ) = 0
[acme@sandy linux]$ perf trace --duration 0.100 usleep 1
     1.143 ( 1.021 ms): 6726 execve(arg0: 140736323962279, arg1: 140736323972752, arg2: 34926752, arg3: 140736323961824, arg4: 7955998171588342573, arg5: 6725) = 0
[acme@sandy linux]$

Cherry picked from tmp.perf/trace2 branch.

Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/n/tip-oslw2j2958we9qf0ctra4whd@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2012-10-08 09:56:00 -03:00
parent 60c907abc6
commit ae9ed03579
2 changed files with 31 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -48,6 +48,9 @@ comma-separated list with no space: 0,1. Ranges of CPUs are specified with -: 0-
In per-thread mode with inheritance mode on (default), Events are captured only when In per-thread mode with inheritance mode on (default), Events are captured only when
the thread executes on the designated CPUs. Default is to monitor all CPUs. the thread executes on the designated CPUs. Default is to monitor all CPUs.
--duration:
Show only events that had a duration greater than N.M ms.
SEE ALSO SEE ALSO
-------- --------
linkperf:perf-record[1], linkperf:perf-script[1] linkperf:perf-record[1], linkperf:perf-script[1]

32
tools/perf/builtin-trace.c
View File

@ -100,8 +100,14 @@ struct trace {
struct machine host; struct machine host;
u64 base_time; u64 base_time;
bool multiple_threads; bool multiple_threads;
double duration_filter;
}; };
static bool trace__filter_duration(struct trace *trace, double t)
{
return t < (trace->duration_filter * NSEC_PER_MSEC);
}
static size_t trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp) static size_t trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp)
{ {
double ts = (double)(tstamp - trace->base_time) / NSEC_PER_MSEC; double ts = (double)(tstamp - trace->base_time) / NSEC_PER_MSEC;
@ -307,8 +313,10 @@ static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel,
printed += syscall__scnprintf_args(sc, msg + printed, 1024 - printed, args); printed += syscall__scnprintf_args(sc, msg + printed, 1024 - printed, args);
if (!strcmp(sc->name, "exit_group") || !strcmp(sc->name, "exit")) { if (!strcmp(sc->name, "exit_group") || !strcmp(sc->name, "exit")) {
trace__fprintf_entry_head(trace, thread, 1, sample->time, stdout); if (!trace->duration_filter) {
printf("%-70s\n", ttrace->entry_str); trace__fprintf_entry_head(trace, thread, 1, sample->time, stdout);
printf("%-70s\n", ttrace->entry_str);
}
} else } else
ttrace->entry_pending = true; ttrace->entry_pending = true;
@ -333,8 +341,12 @@ static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
ttrace->exit_time = sample->time; ttrace->exit_time = sample->time;
if (ttrace->entry_time) if (ttrace->entry_time) {
duration = sample->time - ttrace->entry_time; duration = sample->time - ttrace->entry_time;
if (trace__filter_duration(trace, duration))
goto out;
} else if (trace->duration_filter)
goto out;
trace__fprintf_entry_head(trace, thread, duration, sample->time, stdout); trace__fprintf_entry_head(trace, thread, duration, sample->time, stdout);
@ -358,7 +370,7 @@ static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel,
printf(") = %d", ret); printf(") = %d", ret);
putchar('\n'); putchar('\n');
out:
ttrace->entry_pending = false; ttrace->entry_pending = false;
return 0; return 0;
@ -495,6 +507,15 @@ out:
return err; return err;
} }
static int trace__set_duration(const struct option *opt, const char *str,
int unset __maybe_unused)
{
struct trace *trace = opt->value;
trace->duration_filter = atof(str);
return 0;
}
int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused) int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
{ {
const char * const trace_usage[] = { const char * const trace_usage[] = {
@ -533,6 +554,9 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
"number of mmap data pages"), "number of mmap data pages"),
OPT_STRING(0, "uid", &trace.opts.target.uid_str, "user", OPT_STRING(0, "uid", &trace.opts.target.uid_str, "user",
"user to profile"), "user to profile"),
OPT_CALLBACK(0, "duration", &trace, "float",
"show only events with duration > N.M ms",
trace__set_duration),
OPT_END() OPT_END()
}; };
int err; int err;