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murgatroid99 2015-03-23 11:18:50 -07:00
parent 478481f97f
commit 37ae0f7718
1 changed files with 67 additions and 33 deletions
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100
examples/qps_test.js
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@ -31,6 +31,14 @@
* *
*/ */
/**
* 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'; 'use strict';
var async = require('async'); var async = require('async');
@ -40,47 +48,73 @@ var grpc = require('..');
var testProto = grpc.load(__dirname + '/../interop/test.proto').grpc.testing; var testProto = grpc.load(__dirname + '/../interop/test.proto').grpc.testing;
var interop_server = require('../interop/interop_server.js'); var interop_server = require('../interop/interop_server.js');
function runTest(concurrent, seconds, callback) { /**
* 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); var testServer = interop_server.getServer(0, false);
testServer.server.listen(); testServer.server.listen();
var client = new testProto.TestService('localhost:' + testServer.port); var client = new testProto.TestService('localhost:' + testServer.port);
var warmup_num = 100; var warmup_num = 100;
async.waterfall([ /**
function warmUp(callback) { * Warms up the client to avoid counting startup time in the test result
var pending = warmup_num; * @param {function(Error)} callback Called when warmup is complete
function startCall() { */
client.emptyCall({}, function(err, resp) { function warmUp(callback) {
pending--; var pending = warmup_num;
if (pending === 0) { function startCall() {
callback(null); client.emptyCall({}, function(err, resp) {
} if (err) {
}); callback(err);
} return;
for (var i = 0; i < warmup_num; i++) { }
startCall(); pending--;
} if (pending === 0) {
}, function run(callback) { callback(null);
var running = 0; }
var count = 0; });
var start = process.hrtime(); }
function responseCallback(err, resp) { for (var i = 0; i < warmup_num; i++) {
if (process.hrtime(start)[0] < seconds) { startCall();
count += 1; }
client.emptyCall({}, responseCallback); }
} else { /**
running -= 1; * Run the QPS test. Starts concurrent_calls requests, then starts a new
if (running <= 0) { * request whenever one completes until time runs out.
callback(null, count); * @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; i++) { }
running += 1; for (var i = 0; i < concurrent_calls; i++) {
client.emptyCall({}, responseCallback); running += 1;
} client.emptyCall({}, responseCallback);
}], function(err, count) { }
}
async.waterfall([warmUp, run], function(err, count) {
testServer.server.shutdown(); testServer.server.shutdown();
callback(err, count); callback(err, count);
}); });