更新
This commit is contained in:
Your Name
+244
@@ -0,0 +1,244 @@
|
||||
var Class = require('./Class');
|
||||
var defaults = require('./defaults');
|
||||
var Promise = require('./Promise');
|
||||
var perfNow = require('./perfNow');
|
||||
var delay = require('./delay');
|
||||
var average = require('./average');
|
||||
var reduce = require('./reduce');
|
||||
var each = require('./each');
|
||||
var map = require('./map');
|
||||
var table = require('./table');
|
||||
var toStr = require('./toStr');
|
||||
exports = Class(
|
||||
{
|
||||
initialize: function Benchmark(fn) {
|
||||
var options =
|
||||
arguments.length > 1 && arguments[1] !== undefined
|
||||
? arguments[1]
|
||||
: {};
|
||||
defaults(options, defOpts);
|
||||
this._fn = fn;
|
||||
this._isRunning = false;
|
||||
this._options = options;
|
||||
},
|
||||
run: function() {
|
||||
var _this = this;
|
||||
if (this._isRunning) {
|
||||
return this._pendingPromise;
|
||||
}
|
||||
this._reset();
|
||||
this._isRunning = true;
|
||||
var options = this._options;
|
||||
var pendingPromise = new Promise(function(resolve, reject) {
|
||||
var runSample = function() {
|
||||
var initCount =
|
||||
arguments.length > 0 && arguments[0] !== undefined
|
||||
? arguments[0]
|
||||
: 1;
|
||||
delay(function() {
|
||||
_this
|
||||
._runSample(initCount)
|
||||
.then(function(_ref) {
|
||||
var period = _ref.period,
|
||||
count = _ref.count;
|
||||
var sample = _this._sample;
|
||||
sample.push(period);
|
||||
if (
|
||||
perfNow() - _this._timeStamp <
|
||||
options.maxTime ||
|
||||
sample.length < options.minSamples
|
||||
) {
|
||||
runSample(count);
|
||||
} else {
|
||||
resolve(_this._calcResult());
|
||||
}
|
||||
})
|
||||
.catch(function(err) {
|
||||
reject(err);
|
||||
});
|
||||
}, options.delay);
|
||||
};
|
||||
runSample();
|
||||
});
|
||||
function complete() {
|
||||
this._isRunning = false;
|
||||
delete this._pendingPromise;
|
||||
}
|
||||
pendingPromise.then(complete).catch(complete);
|
||||
this._pendingPromise = pendingPromise;
|
||||
return pendingPromise;
|
||||
},
|
||||
_reset: function() {
|
||||
this._timeStamp = perfNow();
|
||||
this._sample = [];
|
||||
},
|
||||
_calcResult: function() {
|
||||
var sample = this._sample;
|
||||
var result = {
|
||||
sample: sample,
|
||||
toString: function() {
|
||||
var hz = this.hz,
|
||||
rme = this.rme,
|
||||
name = this.name;
|
||||
var size = this.sample.length;
|
||||
return ''
|
||||
.concat(name, ' x ')
|
||||
.concat(
|
||||
formatNumber(hz.toFixed(hz < 100 ? 2 : 0)),
|
||||
' ops/sec \xB1'
|
||||
)
|
||||
.concat(rme.toFixed(2), '% (')
|
||||
.concat(size, ' run')
|
||||
.concat(size === 1 ? '' : 's', ' sampled)');
|
||||
}
|
||||
};
|
||||
var size = sample.length;
|
||||
result.name = this._options.name || this._fn.name || 'anonymous';
|
||||
result.mean = average.apply(null, sample);
|
||||
function varOf(sum, x) {
|
||||
return sum + Math.pow(x - result.mean, 2);
|
||||
}
|
||||
result.variance = reduce(sample, varOf, 0) / (size - 1) || 0;
|
||||
result.deviation = Math.sqrt(result.variance);
|
||||
result.sem = result.deviation / Math.sqrt(size);
|
||||
var critical = tTable[Math.round(size - 1) || 1] || tTable.infinity;
|
||||
result.moe = result.sem * critical;
|
||||
result.rme = (result.moe / result.mean) * 100 || 0;
|
||||
result.hz = 1000 / result.mean;
|
||||
return result;
|
||||
},
|
||||
_runSample: function(count) {
|
||||
var _this2 = this;
|
||||
var options = this._options;
|
||||
var minTime = options.minTime;
|
||||
return new Promise(function(resolve, reject) {
|
||||
var runCycle = function(count) {
|
||||
delay(function() {
|
||||
var elapsed = 0;
|
||||
try {
|
||||
elapsed = _this2._runCycle(count);
|
||||
} catch (e) {
|
||||
return reject(e);
|
||||
}
|
||||
var period = elapsed / count;
|
||||
if (elapsed < minTime) {
|
||||
if (elapsed === 0) {
|
||||
count *= 100;
|
||||
} else {
|
||||
count += Math.ceil(
|
||||
(minTime - elapsed) / period
|
||||
);
|
||||
}
|
||||
runCycle(count);
|
||||
} else {
|
||||
resolve({
|
||||
count: count,
|
||||
period: period
|
||||
});
|
||||
}
|
||||
}, options.delay);
|
||||
};
|
||||
runCycle(count);
|
||||
});
|
||||
},
|
||||
_runCycle: function(count) {
|
||||
var fn = this._fn;
|
||||
var now = perfNow();
|
||||
while (count--) {
|
||||
fn();
|
||||
}
|
||||
return perfNow() - now;
|
||||
}
|
||||
},
|
||||
{
|
||||
all: function(benches, options) {
|
||||
var promises = [];
|
||||
each(benches, function(bench) {
|
||||
if (!(bench instanceof exports)) {
|
||||
bench = new exports(bench, options);
|
||||
}
|
||||
promises.push(bench.run());
|
||||
});
|
||||
return Promise.all(promises).then(function(results) {
|
||||
results.toString = function() {
|
||||
var data = map(results, function(_ref2, idx) {
|
||||
var name = _ref2.name,
|
||||
sample = _ref2.sample,
|
||||
hz = _ref2.hz,
|
||||
rme = _ref2.rme;
|
||||
var columns = [];
|
||||
var size = sample.length;
|
||||
columns.push(
|
||||
toStr(idx + 1),
|
||||
name || 'anonymous',
|
||||
formatNumber(hz.toFixed(hz < 100 ? 2 : 0)),
|
||||
'\xB1'.concat(rme.toFixed(2), '%'),
|
||||
''
|
||||
.concat(size, ' run')
|
||||
.concat(size === 1 ? '' : 's')
|
||||
);
|
||||
return columns;
|
||||
});
|
||||
data.unshift([
|
||||
'index',
|
||||
'name',
|
||||
'ops/sec',
|
||||
'rme',
|
||||
'sampled'
|
||||
]);
|
||||
return table(data);
|
||||
};
|
||||
return results;
|
||||
});
|
||||
}
|
||||
}
|
||||
);
|
||||
var defOpts = {
|
||||
minTime: 50,
|
||||
maxTime: 5000,
|
||||
minSamples: 5,
|
||||
delay: 5,
|
||||
name: ''
|
||||
};
|
||||
var tTable = {
|
||||
'1': 12.706,
|
||||
'2': 4.303,
|
||||
'3': 3.182,
|
||||
'4': 2.776,
|
||||
'5': 2.571,
|
||||
'6': 2.447,
|
||||
'7': 2.365,
|
||||
'8': 2.306,
|
||||
'9': 2.262,
|
||||
'10': 2.228,
|
||||
'11': 2.201,
|
||||
'12': 2.179,
|
||||
'13': 2.16,
|
||||
'14': 2.145,
|
||||
'15': 2.131,
|
||||
'16': 2.12,
|
||||
'17': 2.11,
|
||||
'18': 2.101,
|
||||
'19': 2.093,
|
||||
'20': 2.086,
|
||||
'21': 2.08,
|
||||
'22': 2.074,
|
||||
'23': 2.069,
|
||||
'24': 2.064,
|
||||
'25': 2.06,
|
||||
'26': 2.056,
|
||||
'27': 2.052,
|
||||
'28': 2.048,
|
||||
'29': 2.045,
|
||||
'30': 2.042,
|
||||
infinity: 1.96
|
||||
};
|
||||
function formatNumber(number) {
|
||||
number = String(number).split('.');
|
||||
return (
|
||||
number[0].replace(/(?=(?:\d{3})+$)(?!\b)/g, ',') +
|
||||
(number[1] ? '.' + number[1] : '')
|
||||
);
|
||||
}
|
||||
|
||||
module.exports = exports;
|
||||
Reference in New Issue
Block a user