node/benchmark/common.js at master · CombatCode/node · GitHub

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var assert = require('assert');

var path = require('path');

var silent = +process.env.NODE_BENCH_SILENT;

exports.PORT = process.env.PORT || 12346;

// If this is the main module, then run the benchmarks

if (module === require.main) {

var type = process.argv[2];

if (!type) {

console.error('usage:\n ./node benchmark/common.js <type>');

process.exit(1);

}

var fs = require('fs');

var dir = path.join(__dirname, type);

var tests = fs.readdirSync(dir);

var spawn = require('child_process').spawn;

runBenchmarks();

function runBenchmarks() {

var test = tests.shift();

if (!test)

return;

if (test.match(/^[\._]/))

return process.nextTick(runBenchmarks);

console.error(type + '/' + test);

test = path.resolve(dir, test);

var child = spawn(process.execPath, [ test ], { stdio: 'inherit' });

child.on('close', function(code) {

if (code)

process.exit(code);

else {

console.log('');

runBenchmarks();

}

});

}

exports.createBenchmark = function(fn, options) {

return new Benchmark(fn, options);

};

function Benchmark(fn, options) {

this.fn = fn;

this.options = options;

this.config = parseOpts(options);

this._name = require.main.filename.split(/benchmark[\/\\]/).pop();

this._start = [0,0];

this._started = false;

var self = this;

process.nextTick(function() {

self._run();

});

}

// benchmark an http server.

Benchmark.prototype.http = function(p, args, cb) {

var self = this;

var wrk = path.resolve(__dirname, '..', 'tools', 'wrk', 'wrk');

var regexp = /Requests\/sec:[ \t]+([0-9\.]+)/;

var spawn = require('child_process').spawn;

var url = 'http://127.0.0.1:' + exports.PORT + p;

args = args.concat(url);

var out = '';

var child = spawn(wrk, args);

child.stdout.setEncoding('utf8');

child.stdout.on('data', function(chunk) {

out += chunk;

});

child.on('close', function(code) {

if (cb)

cb(code);

if (code) {

console.error('wrk failed with ' + code);

process.exit(code)

}

var m = out.match(regexp);

var qps = m && +m[1];

if (!qps) {

console.error('%j', out);

console.error('wrk produced strange output');

process.exit(1);

}

self.report(+qps);

});

};

Benchmark.prototype._run = function() {

if (this.config)

return this.fn(this.config);

// one more more options weren't set.

// run with all combinations

var main = require.main.filename;

var settings = [];

var queueLen = 1;

var options = this.options;

var queue = Object.keys(options).reduce(function(set, key) {

var vals = options[key];

assert(Array.isArray(vals));

// match each item in the set with each item in the list

var newSet = new Array(set.length * vals.length);

var j = 0;

set.forEach(function(s) {

vals.forEach(function(val) {

newSet[j++] = s.concat(key + '=' + val);

});

return newSet;

}, [[main]]);

var spawn = require('child_process').spawn;

var node = process.execPath;

var i = 0;

function run() {

var argv = queue[i++];

if (!argv)

return;

var child = spawn(node, argv, { stdio: 'inherit' });

child.on('close', function(code, signal) {

if (code)

console.error('child process exited with code ' + code);

else

run();

});

}

run();

};

function parseOpts(options) {

// verify that there's an option provided for each of the options

// if they're not *all* specified, then we return null.

var keys = Object.keys(options);

var num = keys.length;

var conf = {};

for (var i = 2; i < process.argv.length; i++) {

var m = process.argv[i].match(/^(.+)=(.+)$/);

if (!m || !m[1] || !m[2] || !options[m[1]])

return null;

else {

conf[m[1]] = isFinite(m[2]) ? +m[2] : m[2]

num--;

}

// still go ahead and set whatever WAS set, if it was.

if (num !== 0) {

Object.keys(conf).forEach(function(k) {

options[k] = [conf[k]];

});

}

return num === 0 ? conf : null;

};

Benchmark.prototype.start = function() {

if (this._started)

throw new Error('Called start more than once in a single benchmark');

this._started = true;

this._start = process.hrtime();

};

Benchmark.prototype.end = function(operations) {

var elapsed = process.hrtime(this._start);

if (!this._started)

throw new Error('called end without start');

if (typeof operations !== 'number')

throw new Error('called end() without specifying operation count');

var time = elapsed[0] + elapsed[1]/1e9;

var rate = operations/time;

this.report(rate);

};

Benchmark.prototype.report = function(value) {

var heading = this.getHeading();

if (!silent)

console.log('%s: %s', heading, value.toPrecision(5));

process.exit(0);

};

Benchmark.prototype.getHeading = function() {

var conf = this.config;

return this._name + ' ' + Object.keys(conf).map(function(key) {

return key + '=' + conf[key];

}).join(' ');

}

node/benchmark/common.js at master · CombatCode/node · GitHub

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