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bench: Add ab() method to common for http testing

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This commit is contained in:
isaacs 2013-02-11 23:26:43 -08:00
parent 00e1962495
commit dd069a2539
1 changed files with 41 additions and 1 deletions
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42
benchmark/common.js
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@ -20,6 +20,42 @@ function Benchmark(fn, options) {
});
}
// run ab against a server.
Benchmark.prototype.ab = function(path, args, cb) {
var url = 'http://127.0.0.1:' + exports.PORT + path;
args.push(url);
var self = this;
var out = '';
var spawn = require('child_process').spawn;
// console.error('ab %s', args.join(' '));
var child = spawn('ab', 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('ab failed with ' + code);
process.exit(code)
}
var m = out.match(/Requests per second: +([0-9\.]+)/);
var qps = m && +m[1];
if (!qps) {
process.stderr.write(out + '\n');
console.error('ab produced strange output');
process.exit(1);
}
self.report(+qps);
});
};
Benchmark.prototype._run = function() {
if (this.config)
return this.fn(this.config);
@ -97,8 +133,12 @@ Benchmark.prototype.end = function(operations) {
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();
console.log('%s: %s', heading, rate.toPrecision(5));
console.log('%s: %s', heading, value.toPrecision(5));
process.exit(0);
};