2 * Copyright 2015 Facebook, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #include <folly/Benchmark.h>
18 #include <folly/io/async/EventBase.h>
20 #include <gflags/gflags.h>
22 using namespace folly;
24 class CountedLoopCallback : public EventBase::LoopCallback {
26 CountedLoopCallback(EventBase* eventBase, unsigned int count)
27 : eventBase_(eventBase)
30 void runLoopCallback() noexcept override {
33 eventBase_->runInLoop(this);
38 EventBase* eventBase_;
42 BENCHMARK(timeMeasurementsOn, n) {
46 CountedLoopCallback c(&eventBase, 10);
47 eventBase.runInLoop(&c);
52 BENCHMARK_RELATIVE(timeMeasurementsOff, n) {
53 EventBase eventBase(/* enableTimeMeasurement */ false);
56 CountedLoopCallback c(&eventBase, 10);
57 eventBase.runInLoop(&c);
63 * --bm_min_iters=1000000
65 * ============================================================================
66 * folly/io/async/test/EventBaseBenchmark.cpp relative time/iter iters/s
67 * ============================================================================
68 * timeMeasurementsOn 2.02us 494.57K
69 * timeMeasurementsOff 231.19% 874.58ns 1.14M
70 * ============================================================================
73 int main(int argc, char** argv) {
74 gflags::ParseCommandLineFlags(&argc, &argv, true);