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bench: measure total/init/dispatch/cleanup times

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* Add finer-grained measurements to the million_timers benchmark.
  Before this commit it only measured the total running time.

* Bump the number of inserted timers from 1M to 10M.  With one million
  timers, it finishes too quickly to get useful profiling data out of
  it with perf or oprofile.  The name of the benchmark is now a lie but
  such is life.
This commit is contained in:
Ben Noordhuis 2013-09-12 23:58:41 +02:00
parent d7115f0677
commit b460142451
1 changed files with 14 additions and 6 deletions
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20
test/benchmark-million-timers.c
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@ -22,7 +22,7 @@
#include "task.h"
#include "uv.h"
#define NUM_TIMERS (1000 * 1000)
#define NUM_TIMERS (10 * 1000 * 1000)
static int timer_cb_called;
static int close_cb_called;
@ -41,8 +41,10 @@ static void close_cb(uv_handle_t* handle) {
BENCHMARK_IMPL(million_timers) {
uv_timer_t* timers;
uv_loop_t* loop;
uint64_t before;
uint64_t after;
uint64_t before_all;
uint64_t before_run;
uint64_t after_run;
uint64_t after_all;
int timeout;
int i;
@ -52,25 +54,31 @@ BENCHMARK_IMPL(million_timers) {
loop = uv_default_loop();
timeout = 0;
before_all = uv_hrtime();
for (i = 0; i < NUM_TIMERS; i++) {
if (i % 1000 == 0) timeout++;
ASSERT(0 == uv_timer_init(loop, timers + i));
ASSERT(0 == uv_timer_start(timers + i, timer_cb, timeout, 0));
}
before = uv_hrtime();
before_run = uv_hrtime();
ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));
after = uv_hrtime();
after_run = uv_hrtime();
for (i = 0; i < NUM_TIMERS; i++)
uv_close((uv_handle_t*) (timers + i), close_cb);
ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));
after_all = uv_hrtime();
ASSERT(timer_cb_called == NUM_TIMERS);
ASSERT(close_cb_called == NUM_TIMERS);
free(timers);
LOGF("%.2f seconds\n", (after - before) / 1e9);
LOGF("%.2f seconds total\n", (after_all - before_all) / 1e9);
LOGF("%.2f seconds init\n", (before_run - before_all) / 1e9);
LOGF("%.2f seconds dispatch\n", (after_run - before_run) / 1e9);
LOGF("%.2f seconds cleanup\n", (after_all - after_run) / 1e9);
MAKE_VALGRIND_HAPPY();
return 0;