mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 17:46:41 +07:00
perf stat: Update runtime using cpu-clock event
Currently only the task-clock event updates the runtime_nsec so it cannot show the metric when using cpu-clock events. However cpu clock works basically same as task-clock, so no need to not update the runtime IMHO. Before: # perf stat -a -e cpu-clock,context-switches,page-faults,cycles sleep 0.1 Performance counter stats for 'system wide': 1217.759506 cpu-clock (msec) 93 context-switches 61 page-faults 18,958,022 cycles 0.101393794 seconds time elapsed After: Performance counter stats for 'system wide': 1220.471884 cpu-clock (msec) # 12.013 CPUs utilized 118 context-switches # 0.097 K/sec 59 page-faults # 0.048 K/sec 17,941,247 cycles # 0.015 GHz 0.101594777 seconds time elapsed Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1463119263-5569-2-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
parent
b0404be8d6
commit
daf4f4786e
@ -94,7 +94,8 @@ void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 *count,
|
||||
{
|
||||
int ctx = evsel_context(counter);
|
||||
|
||||
if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK))
|
||||
if (perf_evsel__match(counter, SOFTWARE, SW_TASK_CLOCK) ||
|
||||
perf_evsel__match(counter, SOFTWARE, SW_CPU_CLOCK))
|
||||
update_stats(&runtime_nsecs_stats[cpu], count[0]);
|
||||
else if (perf_evsel__match(counter, HARDWARE, HW_CPU_CYCLES))
|
||||
update_stats(&runtime_cycles_stats[ctx][cpu], count[0]);
|
||||
@ -444,7 +445,8 @@ void perf_stat__print_shadow_stats(struct perf_evsel *evsel,
|
||||
ratio = total / avg;
|
||||
|
||||
print_metric(ctxp, NULL, "%8.0f", "cycles / elision", ratio);
|
||||
} else if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK)) {
|
||||
} else if (perf_evsel__match(evsel, SOFTWARE, SW_TASK_CLOCK) ||
|
||||
perf_evsel__match(evsel, SOFTWARE, SW_CPU_CLOCK)) {
|
||||
if ((ratio = avg_stats(&walltime_nsecs_stats)) != 0)
|
||||
print_metric(ctxp, NULL, "%8.3f", "CPUs utilized",
|
||||
avg / ratio);
|
||||
|
Loading…
Reference in New Issue
Block a user