Boy Sandy Gladies Arriezona renodesper

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

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

Keybase proof

I hereby claim:

I am renodesper on github.
I am renodesper (https://keybase.io/renodesper) on keybase.
I have a public key ASDjuNmtXQh3L_ZADqbfbFSIQsO2_AaPKwq_sxCIjPfLVgo

To claim this, I am signing this object:

	if (localStorage && !localStorage.getItem('size')) {
	var i = 0;
	try {
	// Test up to 10 MB
	for (i = 100; i <= 10000; i += 100) {
	localStorage.setItem('test', new Array((i * 1024) + 1).join('a'));
	}
	} catch (e) {
	localStorage.removeItem('test');
	localStorage.setItem('size', i - 100);

	[alias]
	a = add
	ai = add --interactive
	b = branch
	bs = bisect
	c = commit
	ca = commit --amend
	cam = commit --amend -m
	cm = commit -m
	co = checkout

	#%PAM-1.0

	auth sufficient pam_unix.so try_first_pass likeauth nullok
	auth sufficient pam_fprintd.so
	auth include system-login

	account include system-login

	password include system-login