Krzysztof Kowalczyk kjk

Latency numbers every programmer should know

1 typical CPU instruction ..................   1 ns
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

	var ffi = require('ffi'),
	ref = require('ref'),
	Struct = require('ref-struct'),
	Library = require('./Library'),
	Type = ref.Type,
	NULL = ref.NULL,
	isNull = ref.isNull;


	var groups = ['libs', 'types', 'structs', 'callbacks', 'enums'];