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bench: add bench to check uv_loop_alive (#4065 1/2)

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Trevor Norris 2023-03-28 14:47:15 -06:00
parent 4b0fe81758
commit 3e0b846bdb
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GPG Key ID: 251CA676820DC7F3
2 changed files with 44 additions and 0 deletions
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2
test/benchmark-list.h
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@ -22,6 +22,7 @@
BENCHMARK_DECLARE (sizes)
BENCHMARK_DECLARE (loop_count)
BENCHMARK_DECLARE (loop_count_timed)
BENCHMARK_DECLARE (loop_alive)
BENCHMARK_DECLARE (ping_pongs)
BENCHMARK_DECLARE (ping_udp1)
BENCHMARK_DECLARE (ping_udp10)
@ -89,6 +90,7 @@ TASK_LIST_START
BENCHMARK_ENTRY (sizes)
BENCHMARK_ENTRY (loop_count)
BENCHMARK_ENTRY (loop_count_timed)
BENCHMARK_ENTRY (loop_alive)
BENCHMARK_ENTRY (ping_pongs)
BENCHMARK_HELPER (ping_pongs, tcp4_echo_server)

42
test/benchmark-loop-count.c
View File

@ -26,6 +26,7 @@
#include <stdlib.h>
#define NUM_TICKS (2 * 1000 * 1000)
#define NUM_TICKS2 (2 * 1000 * 1000 * 100)
static unsigned long ticks;
static uv_idle_t idle_handle;
@ -37,6 +38,19 @@ static void idle_cb(uv_idle_t* handle) {
uv_idle_stop(handle);
}
static void idle_alive_cb(uv_idle_t* handle) {
int ticks = 0;
while (++ticks < NUM_TICKS2) {
int r = uv_loop_alive(handle->loop);
if (r == 0)
abort();
}
*(int*)handle->data = ticks;
uv_idle_stop(handle);
}
static void idle2_cb(uv_idle_t* handle) {
ticks++;
@ -90,3 +104,31 @@ BENCHMARK_IMPL(loop_count_timed) {
MAKE_VALGRIND_HAPPY(loop);
return 0;
}
/* Measure the performance of running uv_loop_alive(). Adding this so we can get
* some sort of metric for the impact of switching active_reqs.count to use
* atomics. No other code sits in a hot path. */
BENCHMARK_IMPL(loop_alive) {
uv_loop_t* loop = uv_default_loop();
int ticks = 0;
uint64_t ns;
uv_idle_init(loop, &idle_handle);
idle_handle.data = &ticks;
uv_idle_start(&idle_handle, idle_alive_cb);
ns = uv_hrtime();
uv_run(loop, UV_RUN_DEFAULT);
ns = uv_hrtime() - ns;
ASSERT_EQ(ticks, NUM_TICKS2);
fprintf(stderr, "loop_alive: %d ticks in %.2fs (%.0f/s)\n",
NUM_TICKS2,
ns / 1e9,
NUM_TICKS2 / (ns / 1e9));
fflush(stderr);
MAKE_VALGRIND_HAPPY(loop);
return 0;
}