Arbie Samong phektus

Frontend Development

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Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

	var kue = require('kue');
	var jobs = kue.createQueue();

	console.log('Restarting job ' + process.argv[2]);

	jobs.state(process.argv[2], function (err, ids) {
	ids.forEach(reactivate);
	});

	function reactivate (id) {

	%% Read image and convert to grayscale
	img = imread('pic.jpg');
	img = rgb2gray(img);

	%% Define grayscale representations of 0-255
	chars = fliplr([' ', '.', ',', ':', '-', '=', '+', '*', '#', '%', '@']);
	step = 256 / 11;

	%% Cut image so its size is 8w times 13h
	imgSize = size(img);

	// lo-dash lib is the dependency

	function readOnly(target){
	var _readOnly = function (target, acc) {

	// acc is passed into the function to be used for observer
	var _defineProperty = function (propName, target, acc) {
	var i, len;

	// operation to be performed when add occurred

	#!/usr/bin/env sh

	##
	# This is script with usefull tips taken from:
	# https://github.com/mathiasbynens/dotfiles/blob/master/.osx
	#
	# install it:
	# curl -sL https://raw.github.com/gist/2108403/hack.sh \| sh
	#