135 lines
3.5 KiB
JavaScript
Executable File
135 lines
3.5 KiB
JavaScript
Executable File
#!/usr/bin/env node
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var progress = require('progress');
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var fs = require('fs');
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var nWarmup = 2;
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var nRepeats = 32 + nWarmup;
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var path = require('path');
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var prevResults = {};
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try {
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var r = require('./results.json');
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r.forEach(function(rr) {
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prevResults[rr.path] = rr
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});
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} catch(e) {
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// no prev results?
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}
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function stats(times) {
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var avg = 0;
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for(var i=0; i < times.length; ++i) {
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avg += times[i]/times.length;
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}
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var v = 0;
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for(var i=0; i < times.length; ++i) {
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v += (times[i] - avg)*(times[i] - avg) / times.length;
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}
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var stdev = Math.sqrt(v);
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return {
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avg: avg,
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stdev: stdev,
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stdevrel: stdev/avg
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};
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}
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function runFolder(name, done) {
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fs.readdir(name, function(err, list) {
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if (err)
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return done(err);
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runFileList(name, list, done);
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});
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}
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function benchmarkModule(m, modulePath, done) {
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var results = [];
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var bar = new progress(m.comment + ' [:bar] ', {
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total: nRepeats,
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clear: true
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});
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function repeat(w, n) {
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bar.tick();
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if (n === 0) {
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var result = {};
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var s = stats(results);
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var unsDigits = Math.floor(Math.floor(s.stdev).toString().length * 0.8);
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var pow = Math.pow(10, unsDigits);
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var avg = Math.round(s.avg / pow)*pow;
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var uns = Math.round(s.stdev / pow)*pow;
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console.log('%s: %s ±%s', m.comment, avg, uns);
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result.time = s.avg;
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result.timeStdev = s.stdev;
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result.comment = m.comment;
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result.path = path.relative(__dirname, modulePath);
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if (m.toSpeed) {
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var speed = m.toSpeed(s.avg, s.stdev);
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var speedDigits = Math.floor(Math.floor(speed.error).toString().length * 0.8);
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pow = Math.pow(10, speedDigits);
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console.log(' = %s ±%s %s',
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Math.round(speed.value / pow)*pow,
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Math.round(speed.error / pow)*pow, speed.units);
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var prev = prevResults[result.path];
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if (prev) {
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if (speed.value > prev.speed.value + prev.speed.error) {
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console.log('Faster then prev result: %s ±%s %s', prev.speed.value, prev.speed.units)
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} else if (speed.value < prev.speed.value - prev.speed.error) {
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console.log('Slower then prev result: %s ±%s %s', prev.speed.value, prev.speed.units)
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}
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}
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result.speed = speed;
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}
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return done(null, result);
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}
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var start = process.hrtime();
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setImmediate(function() {
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m(function() {
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var end = process.hrtime(start);
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if (w <= 0)
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results.push(end[0]*1e9 + end[1]);
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repeat(w-1, n-1);
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});
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});
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}
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repeat(nWarmup-1, nRepeats-1, done);
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}
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function runFileList(base, list, done) {
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var index = -1;
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var results;
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function runOne(err, res) {
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if (err) return done(err);
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++index;
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if (res) {
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if (!results)
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results = [];
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if (Array.isArray(res))
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results = results.concat(res);
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else
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results.push(res);
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}
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if (index >= list.length) {
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return done(null, results);
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}
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var fname = base + '/' + list[index];
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fs.stat(fname, function(err, stat) {
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if (err) return done(err);
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if (stat.isDirectory())
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return runFolder(fname, runOne);
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else if (fname.slice(-3) == '.js') {
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var m = require(fname);
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return benchmarkModule(m, fname, runOne);
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}
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runOne();
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});
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}
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runOne();
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}
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//var name = process.argv[2] || __dirname + '/unit';
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runFolder(__dirname + '/unit', function(err, results) {
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//console.log(results);
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fs.writeFileSync(__dirname + '/results.json', JSON.stringify(results));
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});
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