davidmarkclements

const bench = require('fastbench')

function valuesFn (array) {
  var i = 0
  return function (abort, cb) {
    if(i >= array.length)
      cb(true)
    else
      cb(null, array[i++])
  }

mafintosh

var fs = require('fs')

for (var i = 0; i < 10000; i++) {
  printLength(__filename)
}

function printLength (filename) {
  fs.readFile(filename, foo)

  function foo (err, buf)  {

krisselden

Usage

Run

./trace-ic.sh http://localhost:8080 > ic.log

Wait until your page renders and the log file appending settles down.

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD