1 files changed, 104 insertions, 0 deletions
diff --git a/tests/test-timer-performance.c b/tests/test-timer-performance.c
new file mode 100644
index 00000000..a529a5ce
--- /dev/null
+++ b/tests/test-timer-performance.c
@@ -0,0 +1,104 @@
+/*
+ * Test program which measures the time it takes to schedule and
+ * remove timers.
+ *
+ * Copyright (C) 2013 by Open Source Routing.
+ * Copyright (C) 2013 by Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This file is part of Quagga
+ *
+ * Quagga is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * Quagga is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Quagga; see the file COPYING.  If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ */
+#include <stdio.h>
+#include <unistd.h>
+
+#include <zebra.h>
+
+#include "thread.h"
+#include "pqueue.h"
+#include "prng.h"
+
+#define SCHEDULE_TIMERS 1000000
+#define REMOVE_TIMERS    500000
+
+struct thread_master *master;
+
+static int dummy_func(struct thread *thread)
+{
+  return 0;
+}
+
+int main(int argc, char **argv)
+{
+  struct prng *prng;
+  int i;
+  struct thread **timers;
+  struct timeval tv_start, tv_lap, tv_stop;
+  unsigned long t_schedule, t_remove;
+
+  master = thread_master_create();
+  prng = prng_new(0);
+  timers = calloc(SCHEDULE_TIMERS, sizeof(*timers));
+
+  /* create thread structures so they won't be allocated during the
+   * time measurement */
+  for (i = 0; i < SCHEDULE_TIMERS; i++)
+    timers[i] = thread_add_timer_msec(master, dummy_func, NULL, 0);
+  for (i = 0; i < SCHEDULE_TIMERS; i++)
+    thread_cancel(timers[i]);
+
+  quagga_gettime(QUAGGA_CLK_MONOTONIC, &tv_start);
+
+  for (i = 0; i < SCHEDULE_TIMERS; i++)
+    {
+      long interval_msec;
+
+      interval_msec = prng_rand(prng) % (100 * SCHEDULE_TIMERS);
+      timers[i] = thread_add_timer_msec(master, dummy_func,
+                                        NULL, interval_msec);
+    }
+
+  quagga_gettime(QUAGGA_CLK_MONOTONIC, &tv_lap);
+
+  for (i = 0; i < REMOVE_TIMERS; i++)
+    {
+      int index;
+
+      index = prng_rand(prng) % SCHEDULE_TIMERS;
+      if (timers[index])
+        thread_cancel(timers[index]);
+      timers[index] = NULL;
+    }
+
+  quagga_gettime(QUAGGA_CLK_MONOTONIC, &tv_stop);
+
+  t_schedule = 1000 * (tv_lap.tv_sec - tv_start.tv_sec);
+  t_schedule += (tv_lap.tv_usec - tv_start.tv_usec) / 1000;
+
+  t_remove = 1000 * (tv_stop.tv_sec - tv_lap.tv_sec);
+  t_remove += (tv_stop.tv_usec - tv_lap.tv_usec) / 1000;
+
+  printf("Scheduling %d random timers took %ld.%03ld seconds.\n",
+         SCHEDULE_TIMERS, t_schedule/1000, t_schedule%1000);
+  printf("Removing %d random timers took %ld.%03ld seconds.\n",
+         REMOVE_TIMERS, t_remove/1000, t_remove%1000);
+  fflush(stdout);
+
+  free(timers);
+  thread_master_free(master);
+  prng_free(prng);
+  return 0;
+}