2 * Copyright 2015-present 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>
19 #include <folly/portability/GFlags.h>
21 using namespace folly;
23 class CountedLoopCallback : public EventBase::LoopCallback {
25 CountedLoopCallback(EventBase* eventBase, unsigned int count)
26 : eventBase_(eventBase)
29 void runLoopCallback() noexcept override {
32 eventBase_->runInLoop(this);
37 EventBase* eventBase_;
41 BENCHMARK(timeMeasurementsOn, n) {
45 CountedLoopCallback c(&eventBase, 10);
46 eventBase.runInLoop(&c);
51 BENCHMARK_RELATIVE(timeMeasurementsOff, n) {
52 EventBase eventBase(/* enableTimeMeasurement */ false);
55 CountedLoopCallback c(&eventBase, 10);
56 eventBase.runInLoop(&c);
62 * --bm_min_iters=1000000
64 * ============================================================================
65 * folly/io/async/test/EventBaseBenchmark.cpp relative time/iter iters/s
66 * ============================================================================
67 * timeMeasurementsOn 2.02us 494.57K
68 * timeMeasurementsOff 231.19% 874.58ns 1.14M
69 * ============================================================================
72 int main(int argc, char** argv) {
73 gflags::ParseCommandLineFlags(&argc, &argv, true);