filer/perf/index.js

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JavaScript
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2014-12-16 23:53:29 +00:00
var Filer = require('..');
var util = require('../tests/lib/test-utils.js');
function setImmediate(cb) {
setTimeout(cb, 0);
}
function parse_query() {
var query = window.location.search.substring(1);
var parsed = {};
query.split('&').forEach(function(pair) {
pair = pair.split('=');
var key = decodeURIComponent(pair[0]);
var value = decodeURIComponent(pair[1]);
parsed[key] = value;
});
return parsed;
}
var query = parse_query();
function time(test, cb) {
var start = performance.now();
function done() {
var end = performance.now();
cb(end - start);
}
test(done);
}
var random_data = new Buffer(1024); // 1kB buffer
var read_buffer = new Buffer(1024);
function run(iter) {
iter = (undefined == iter) ? 0 : iter;
function before() {
util.setup(function() {
setImmediate(during);
});
}
function during() {
var fs = util.fs();
window.crypto.getRandomValues(random_data);
time(function(done) {
fs.mkdir('/tmp', function(err) {
fs.stat('/tmp', function(err, stats) {
fs.open('/tmp/test', 'w', function(err, fd) {
fs.write(fd, random_data, null, null, null, function(err, nbytes) {
fs.close(fd, function(err) {
fs.stat('/tmp/test', function(err, stats) {
fs.open('/tmp/test', 'r', function(err, fd) {
fs.read(fd, read_buffer, null, null, null, function(err, nbytes) {
fs.close(fd, function(err) {
fs.unlink('/tmp/test', function(err) {
done();
});});});});});});});});});});
}, after);
}
function after(dt) {
util.cleanup(complete.bind(null, iter, dt));
}
before();
}
var results = [];
function complete(iter, result) {
results.push(result);
if(++iter < iterations) {
setImmediate(run.bind(null, iter));
} else {
do_stats();
}
progress.value = iter;
}
function do_stats() {
var output = document.getElementById("output");
var stats = {
mean: ss.mean(results) + " ms",
min: ss.min(results),
max: ss.max(results),
med_abs_dev: ss.median_absolute_deviation(results),
};
var t = document.createElement("table");
var tbody = document.createElement("tbody");
var keys = Object.keys(stats);
keys.forEach(function(key) {
var row = document.createElement("tr");
var key_cell = document.createElement("td");
var key_cell_text = document.createTextNode(key);
key_cell.appendChild(key_cell_text);
row.appendChild(key_cell);
var val_cell = document.createElement("td");
var val_cell_text = document.createTextNode(stats[key]);
val_cell.appendChild(val_cell_text);
row.appendChild(val_cell);
tbody.appendChild(row);
});
t.appendChild(tbody);
output.appendChild(t);
}
var query = parse_query();
var iterations = query.iterations || 10;
var progress = document.getElementById("progress");
progress.max = iterations;
run();