bench: add lots-of-timers benchmark

test/benchmark-list.h

@@ -46,6 +46,7 @@ BENCHMARK_DECLARE (gethostbyname)
 BENCHMARK_DECLARE (getaddrinfo)
 BENCHMARK_DECLARE (spawn)
 BENCHMARK_DECLARE (thread_create)
+BENCHMARK_DECLARE (million_timers)
 HELPER_DECLARE    (tcp4_blackhole_server)
 HELPER_DECLARE    (tcp_pump_server)
 HELPER_DECLARE    (pipe_pump_server)
@@ -106,4 +107,5 @@ TASK_LIST_START
 
   BENCHMARK_ENTRY  (spawn)
   BENCHMARK_ENTRY  (thread_create)
+  BENCHMARK_ENTRY  (million_timers)
 TASK_LIST_END

test/benchmark-million-timers.c

@@ -0,0 +1,65 @@
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "task.h"
+#include "uv.h"
+
+#define NUM_TIMERS (1000 * 1000)
+
+static int timer_cb_called;
+
+
+static void timer_cb(uv_timer_t* handle, int status) {
+  timer_cb_called++;
+}
+
+
+BENCHMARK_IMPL(million_timers) {
+  uv_timer_t* timers;
+  uv_loop_t* loop;
+  uint64_t before;
+  uint64_t after;
+  int timeout;
+  int i;
+
+  timers = malloc(NUM_TIMERS * sizeof(timers[0]));
+  ASSERT(timers != NULL);
+
+  loop = uv_default_loop();
+  timeout = 0;
+
+  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();
+  ASSERT(0 == uv_run(loop));
+  after = uv_hrtime();
+
+  ASSERT(timer_cb_called == NUM_TIMERS);
+  free(timers);
+
+  LOGF("%.2f seconds\n", (after - before) / 1e9);
+
+  return 0;
+}

uv.gyp

@@ -404,6 +404,7 @@
         'test/benchmark-getaddrinfo.c',
         'test/benchmark-list.h',
         'test/benchmark-loop-count.c',
+        'test/benchmark-million-timers.c',
         'test/benchmark-ping-pongs.c',
         'test/benchmark-pound.c',
         'test/benchmark-pump.c',