| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include <chrono> |
| #include <iostream> |
| |
| // Use the C histogram rather than C++ to avoid depending on proto |
| #include <grpc/support/histogram.h> |
| |
| #include "test/cpp/qps/interarrival.h" |
| |
| using grpc::testing::RandomDist; |
| using grpc::testing::InterarrivalTimer; |
| |
| static void RunTest(RandomDist &&r, int threads, std::string title) { |
| InterarrivalTimer timer; |
| timer.init(r, threads); |
| gpr_histogram *h(gpr_histogram_create(0.01, 60e9)); |
| |
| for (int i = 0; i < 10000000; i++) { |
| for (int j = 0; j < threads; j++) { |
| gpr_histogram_add(h, timer(j).count()); |
| } |
| } |
| |
| 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 << gpr_histogram_percentile(h, pct) << "," << pct << std::endl; |
| } |
| |
| gpr_histogram_destroy(h); |
| } |
| |
| using grpc::testing::ExpDist; |
| using grpc::testing::DetDist; |
| using grpc::testing::UniformDist; |
| using grpc::testing::ParetoDist; |
| |
| int main(int argc, char **argv) { |
| RunTest(ExpDist(10.0), 5, std::string("Exponential(10)")); |
| RunTest(DetDist(5.0), 5, std::string("Det(5)")); |
| RunTest(UniformDist(0.0, 10.0), 5, std::string("Uniform(1,10)")); |
| RunTest(ParetoDist(1.0, 1.0), 5, std::string("Pareto(1,1)")); |
| return 0; |
| } |