1 files changed, 177 insertions, 0 deletions
diff --git a/fnet/src/tests/locking/lockspeed.cpp b/fnet/src/tests/locking/lockspeed.cpp
new file mode 100644
index 00000000000..bccedc61b8e
--- /dev/null
+++ b/fnet/src/tests/locking/lockspeed.cpp
@@ -0,0 +1,177 @@
+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+#include <vespa/vespalib/testkit/test_kit.h>
+#include <vespa/fnet/fnet.h>
+#include "dummy.h"
+
+TEST("lock speed") {
+  FastOS_Time      start;
+  FastOS_Time       stop;
+  DummyLock        dummy;
+  FNET_Mutex        lock;
+  double       dummyTime;
+  double      actualTime;
+  double        overhead;
+  uint32_t             i;
+
+  start.SetNow();
+  for (i = 0; i < 1000000; i++) {
+    dummy.Lock();
+    dummy.Unlock();
+    dummy.Lock();
+    dummy.Unlock();
+    dummy.Lock();
+    dummy.Unlock();
+    dummy.Lock();
+    dummy.Unlock();
+    dummy.Lock();
+    dummy.Unlock();
+    dummy.Lock();
+    dummy.Unlock();
+    dummy.Lock();
+    dummy.Unlock();
+    dummy.Lock();
+    dummy.Unlock();
+    dummy.Lock();
+    dummy.Unlock();
+    dummy.Lock();
+    dummy.Unlock();
+  }
+  stop.SetNow();
+  stop -= start;
+  dummyTime = stop.MilliSecs();
+
+  fprintf(stderr,
+          "10M dummy lock/unlock: %f ms (%1.2f/ms)\n",
+          dummyTime, 10000000.0 / dummyTime);
+
+  start.SetNow();
+  for (i = 0; i < 1000000; i++) {
+    lock.Lock();
+    lock.Unlock();
+    lock.Lock();
+    lock.Unlock();
+    lock.Lock();
+    lock.Unlock();
+    lock.Lock();
+    lock.Unlock();
+    lock.Lock();
+    lock.Unlock();
+    lock.Lock();
+    lock.Unlock();
+    lock.Lock();
+    lock.Unlock();
+    lock.Lock();
+    lock.Unlock();
+    lock.Lock();
+    lock.Unlock();
+    lock.Lock();
+    lock.Unlock();
+  }
+  stop.SetNow();
+  stop -= start;
+  actualTime = stop.MilliSecs();
+
+  fprintf(stderr,
+          "10M actual lock/unlock: %f ms (%1.2f/ms)\n",
+          stop.MilliSecs(), 10000000.0 / stop.MilliSecs());
+
+  overhead = (actualTime - dummyTime) / 10000.0;
+
+  fprintf(stderr,
+          "approx overhead per lock/unlock: %f microseconds\n",
+          overhead);
+
+  //---------------------------------------------------------------------------
+
+  start.SetNow();
+  for (i = 0; i < 1000000; i++) {
+      FNET_Mutex lock0;
+      FNET_Mutex lock1;
+      FNET_Mutex lock2;
+      FNET_Mutex lock3;
+      FNET_Mutex lock4;
+      FNET_Mutex lock5;
+      FNET_Mutex lock6;
+      FNET_Mutex lock7;
+      FNET_Mutex lock8;
+      FNET_Mutex lock9;
+  }
+  stop.SetNow();
+  stop -= start;
+  fprintf(stderr, "10M mutex create/destroy %f ms (%1.2f/ms)\n",
+      stop.MilliSecs(), 10000000.0 / stop.MilliSecs());
+
+  //---------------------------------------------------------------------------
+
+  start.SetNow();
+  for (i = 0; i < 1000000; i++) {
+      FNET_Cond cond0;
+      FNET_Cond cond1;
+      FNET_Cond cond2;
+      FNET_Cond cond3;
+      FNET_Cond cond4;
+      FNET_Cond cond5;
+      FNET_Cond cond6;
+      FNET_Cond cond7;
+      FNET_Cond cond8;
+      FNET_Cond cond9;
+  }
+  stop.SetNow();
+  stop -= start;
+  fprintf(stderr, "10M cond create/destroy %f ms (%1.2f/ms)\n",
+      stop.MilliSecs(), 10000000.0 / stop.MilliSecs());
+
+  //---------------------------------------------------------------------------
+
+  start.SetNow();
+  for (i = 0; i < 1000000; i++) {
+      DummyObj dummy0;
+      DummyObj dummy1;
+      DummyObj dummy2;
+      DummyObj dummy3;
+      DummyObj dummy4;
+      DummyObj dummy5;
+      DummyObj dummy6;
+      DummyObj dummy7;
+      DummyObj dummy8;
+      DummyObj dummy9;
+  }
+  stop.SetNow();
+  stop -= start;
+  fprintf(stderr, "10M dummy create/destroy %f ms (%1.2f/ms)\n",
+      stop.MilliSecs(), 10000000.0 / stop.MilliSecs());
+
+  //---------------------------------------------------------------------------
+
+  start.SetNow();
+  for (i = 0; i < 1000000; i++) {
+      DummyObj *dummy0 = new DummyObj();
+      DummyObj *dummy1 = new DummyObj();
+      DummyObj *dummy2 = new DummyObj();
+      DummyObj *dummy3 = new DummyObj();
+      DummyObj *dummy4 = new DummyObj();
+      DummyObj *dummy5 = new DummyObj();
+      DummyObj *dummy6 = new DummyObj();
+      DummyObj *dummy7 = new DummyObj();
+      DummyObj *dummy8 = new DummyObj();
+      DummyObj *dummy9 = new DummyObj();
+      delete dummy9;
+      delete dummy8;
+      delete dummy7;
+      delete dummy6;
+      delete dummy5;
+      delete dummy4;
+      delete dummy3;
+      delete dummy2;
+      delete dummy1;
+      delete dummy0;
+  }
+  stop.SetNow();
+  stop -= start;
+  fprintf(stderr, "10M dummy new/delete %f ms (%1.2f/ms)\n",
+          stop.MilliSecs(), 10000000.0 / stop.MilliSecs());
+
+  //---------------------------------------------------------------------------
+}
+
+TEST_MAIN() { TEST_RUN_ALL(); }