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// Copyright 2017 Yahoo Holdings. 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;
FastOS_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++) {
FastOS_Mutex lock0;
FastOS_Mutex lock1;
FastOS_Mutex lock2;
FastOS_Mutex lock3;
FastOS_Mutex lock4;
FastOS_Mutex lock5;
FastOS_Mutex lock6;
FastOS_Mutex lock7;
FastOS_Mutex lock8;
FastOS_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++) {
FastOS_Cond cond0;
FastOS_Cond cond1;
FastOS_Cond cond2;
FastOS_Cond cond3;
FastOS_Cond cond4;
FastOS_Cond cond5;
FastOS_Cond cond6;
FastOS_Cond cond7;
FastOS_Cond cond8;
FastOS_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(); }
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