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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.
*
*/
'use strict';
var grpc = require('..');
var testProto = grpc.load(__dirname + '/../interop/test.proto').grpc.testing;
var _ = require('lodash');
var interop_server = require('../interop/interop_server.js');
function runTest(iterations, callback) {
var testServer = interop_server.getServer(0, false);
testServer.server.listen();
var client = new testProto.TestService('localhost:' + testServer.port);
function runIterations(finish) {
var start = process.hrtime();
var intervals = [];
function next(i) {
if (i >= iterations) {
testServer.server.shutdown();
var totalDiff = process.hrtime(start);
finish({
total: totalDiff[0] * 1000000 + totalDiff[1] / 1000,
intervals: intervals
});
} else{
var deadline = new Date();
deadline.setSeconds(deadline.getSeconds() + 3);
var startTime = process.hrtime();
client.emptyCall({}, function(err, resp) {
var timeDiff = process.hrtime(startTime);
intervals[i] = timeDiff[0] * 1000000 + timeDiff[1] / 1000;
next(i+1);
}, {}, deadline);
}
}
next(0);
}
function warmUp(num) {
var pending = num;
function startCall() {
client.emptyCall({}, function(err, resp) {
pending--;
if (pending === 0) {
runIterations(callback);
}
});
}
for (var i = 0; i < num; i++) {
startCall();
}
}
warmUp(100);
}
function percentile(arr, pct) {
if (pct > 99) {
pct = 99;
}
if (pct < 0) {
pct = 0;
}
var index = Math.floor(arr.length * pct / 100);
return arr[index];
}
if (require.main === module) {
var count;
if (process.argv.length >= 3) {
count = process.argv[2];
} else {
count = 100;
}
runTest(count, function(results) {
var sorted_intervals = _.sortBy(results.intervals, _.identity);
console.log('count:', count);
console.log('total time:', results.total, 'us');
console.log('median:', percentile(sorted_intervals, 50), 'us');
console.log('90th percentile:', percentile(sorted_intervals, 90), 'us');
console.log('95th percentile:', percentile(sorted_intervals, 95), 'us');
console.log('99th percentile:', percentile(sorted_intervals, 99), 'us');
console.log('QPS:', (count / results.total) * 1000000);
});
}
module.exports = runTest;
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