timeclosures.js

#!/usr/bin/env node
/*
 * Time logging with closure-avoiding changes discussed in #401.
 */

console.log('Time with/without closures in mkLogEmitter');

var ben = require('ben');  // npm install ben
var bunyan = require('../lib/bunyan');

function Collector() {}
Collector.prototype.write = function (s) {};

var log = bunyan.createLogger({
    name: 'timeclosures',
    stream: new Collector(),
    level: 'info'

});


var i, ms, fields;
i = 0;
ms = ben(1e7, function () {
    i++;
    log.trace({ count: i }, 'hello');
});
console.log(' - log.trace:     %dms per iteration', ms);

console.log('\nNow you need to manually apply the patch for #401 and compare.');