Wei Gao villadora

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

	#!/usr/bin/env ruby
	# A quick and dirty implementation of an HTTP proxy server in Ruby
	# because I did not want to install anything.
	#
	# Copyright (C) 2009 Torsten Becker <[email protected]>

	require 'socket'
	require 'uri'

	// Use Gists to store code you would like to remember later on
	console.log(window); // log the "window" object to the console