hellerbarde

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

grkvlt

Tiny_RayTracing.ps by Takashi Hayakawa (h-takasi@isea.is.titech.ac.jp)
is a ray tracing program in only 762 bytes (plus header)!

BEST OBFUSCATED ARTWORK -- 1st prize
  -- The 2nd most coveted prize. These combine obfuscation with great artwork.

Don't send this one to a printer. It will take too long. Display it
on the screen and be ready to wait a while. The picture is well worth it.
If you want to print the picture much faster, use Tiny_RayTracing_Fast.ps instead.

chjj

#!/bin/bash

# transset in a bash script
# copyright (c) 2011, christopher jeffrey

# usage:
# by window id
#trans -w "$WINDOWID" -o 75
# by name
#trans -n "urxvt" -o 75

jtriley

#!/usr/bin/env python
import os
import shlex
import struct
import platform
import subprocess
 
 
def get_terminal_size():
    """ getTerminalSize()