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/*
*
* 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;
}
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