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diff --git a/src/node/performance/qps_test.js b/src/node/performance/qps_test.js
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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.
- *
- */
-
-/**
- * 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));
- });
-}