--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/libuv/test/benchmark-million-timers.c	Wed Jan 14 19:39:52 2026 -0800
@@ -0,0 +1,86 @@
+/* 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 (10 * 1000 * 1000)
+
+static int timer_cb_called;
+static int close_cb_called;
+
+
+static void timer_cb(uv_timer_t* handle) {
+  timer_cb_called++;
+}
+
+
+static void close_cb(uv_handle_t* handle) {
+  close_cb_called++;
+}
+
+
+BENCHMARK_IMPL(million_timers) {
+  uv_timer_t* timers;
+  uv_loop_t* loop;
+  uint64_t before_all;
+  uint64_t before_run;
+  uint64_t after_run;
+  uint64_t after_all;
+  int timeout;
+  int i;
+
+  timers = malloc(NUM_TIMERS * sizeof(timers[0]));
+  ASSERT_NOT_NULL(timers);
+
+  loop = uv_default_loop();
+  timeout = 0;
+
+  before_all = uv_hrtime();
+  for (i = 0; i < NUM_TIMERS; i++) {
+    if (i % 1000 == 0) timeout++;
+    ASSERT_OK(uv_timer_init(loop, timers + i));
+    ASSERT_OK(uv_timer_start(timers + i, timer_cb, timeout, 0));
+  }
+
+  before_run = uv_hrtime();
+  ASSERT_OK(uv_run(loop, UV_RUN_DEFAULT));
+  after_run = uv_hrtime();
+
+  for (i = 0; i < NUM_TIMERS; i++)
+    uv_close((uv_handle_t*) (timers + i), close_cb);
+
+  ASSERT_OK(uv_run(loop, UV_RUN_DEFAULT));
+  after_all = uv_hrtime();
+
+  ASSERT_EQ(timer_cb_called, NUM_TIMERS);
+  ASSERT_EQ(close_cb_called, NUM_TIMERS);
+  free(timers);
+
+  fprintf(stderr, "%.2f seconds total\n", (after_all - before_all) / 1e9);
+  fprintf(stderr, "%.2f seconds init\n", (before_run - before_all) / 1e9);
+  fprintf(stderr, "%.2f seconds dispatch\n", (after_run - before_run) / 1e9);
+  fprintf(stderr, "%.2f seconds cleanup\n", (after_all - after_run) / 1e9);
+  fflush(stderr);
+
+  MAKE_VALGRIND_HAPPY(loop);
+  return 0;
+}