| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| #include <chrono> |
| #include <iostream> |
| |
| // Use the C histogram rather than C++ to avoid depending on proto |
| #include "test/core/util/histogram.h" |
| |
| #include "test/cpp/qps/interarrival.h" |
| #include "test/cpp/util/test_config.h" |
| |
| using grpc::testing::InterarrivalTimer; |
| using grpc::testing::RandomDistInterface; |
| |
| static void RunTest(RandomDistInterface&& r, int threads, |
| const std::string& title) { |
| InterarrivalTimer timer; |
| timer.init(r, threads); |
| grpc_histogram* h(grpc_histogram_create(0.01, 60e9)); |
| |
| for (int i = 0; i < 10000000; i++) { |
| for (int j = 0; j < threads; j++) { |
| grpc_histogram_add(h, timer.next(j)); |
| } |
| } |
| |
| std::cout << title << " Distribution" << std::endl; |
| std::cout << "Value, Percentile" << std::endl; |
| for (double pct = 0.0; pct < 100.0; pct += 1.0) { |
| std::cout << grpc_histogram_percentile(h, pct) << "," << pct << std::endl; |
| } |
| |
| grpc_histogram_destroy(h); |
| } |
| |
| using grpc::testing::ExpDist; |
| |
| int main(int argc, char** argv) { |
| grpc::testing::InitTest(&argc, &argv, true); |
| |
| RunTest(ExpDist(10.0), 5, std::string("Exponential(10)")); |
| return 0; |
| } |