/* * * 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; }