| /* |
| * |
| * 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. |
| * |
| */ |
| |
| /** |
| * This script runs a QPS test. It sends requests for a specified length of time |
| * with a specified number pending at any one time. It then outputs the measured |
| * QPS. Usage: |
| * node qps_test.js [--concurrent=count] [--time=seconds] |
| * concurrent defaults to 100 and time defaults to 10 |
| */ |
| |
| 'use strict'; |
| |
| var async = require('async'); |
| var parseArgs = require('minimist'); |
| |
| var grpc = require('..'); |
| var testProto = grpc.load(__dirname + '/../interop/test.proto').grpc.testing; |
| var interop_server = require('../interop/interop_server.js'); |
| |
| /** |
| * Runs the QPS test. Sends requests constantly for the given number of seconds, |
| * and keeps concurrent_calls requests pending at all times. When the test ends, |
| * the callback is called with the number of calls that completed within the |
| * time limit. |
| * @param {number} concurrent_calls The number of calls to have pending |
| * simultaneously |
| * @param {number} seconds The number of seconds to run the test for |
| * @param {function(Error, number)} callback Callback for test completion |
| */ |
| function runTest(concurrent_calls, seconds, callback) { |
| var testServer = interop_server.getServer(0, false); |
| testServer.server.start(); |
| var client = new testProto.TestService('localhost:' + testServer.port, |
| grpc.credentials.createInsecure()); |
| |
| var warmup_num = 100; |
| |
| /** |
| * Warms up the client to avoid counting startup time in the test result |
| * @param {function(Error)} callback Called when warmup is complete |
| */ |
| function warmUp(callback) { |
| var pending = warmup_num; |
| function startCall() { |
| client.emptyCall({}, function(err, resp) { |
| if (err) { |
| callback(err); |
| return; |
| } |
| pending--; |
| if (pending === 0) { |
| callback(null); |
| } |
| }); |
| } |
| for (var i = 0; i < warmup_num; i++) { |
| startCall(); |
| } |
| } |
| /** |
| * Run the QPS test. Starts concurrent_calls requests, then starts a new |
| * request whenever one completes until time runs out. |
| * @param {function(Error, number)} callback Called when the test is complete. |
| * The second argument is the number of calls that finished within the |
| * time limit |
| */ |
| function run(callback) { |
| var running = 0; |
| var count = 0; |
| var start = process.hrtime(); |
| function responseCallback(err, resp) { |
| if (process.hrtime(start)[0] < seconds) { |
| count += 1; |
| client.emptyCall({}, responseCallback); |
| } else { |
| running -= 1; |
| if (running <= 0) { |
| callback(null, count); |
| } |
| } |
| } |
| for (var i = 0; i < concurrent_calls; i++) { |
| running += 1; |
| client.emptyCall({}, responseCallback); |
| } |
| } |
| async.waterfall([warmUp, run], function(err, count) { |
| testServer.server.shutdown(); |
| callback(err, count); |
| }); |
| } |
| |
| if (require.main === module) { |
| var argv = parseArgs(process.argv.slice(2), { |
| default: {'concurrent': 100, |
| 'time': 10} |
| }); |
| runTest(argv.concurrent, argv.time, function(err, count) { |
| if (err) { |
| throw err; |
| } |
| console.log('Concurrent calls:', argv.concurrent); |
| console.log('Time:', argv.time, 'seconds'); |
| console.log('QPS:', (count/argv.time)); |
| }); |
| } |