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/*
*
* 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::RandomDistInterface;
using grpc::testing::InterarrivalTimer;
static void RunTest(RandomDistInterface &&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.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 << 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(0,10)"));
RunTest(ParetoDist(1.0, 1.0), 5, std::string("Pareto(1,1)"));
return 0;
}
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