bzero cdfpaz

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

	package cz.monetplus.mnsp.tools.misc;

	import org.apache.commons.codec.DecoderException;
	import org.apache.commons.codec.binary.Hex;
	import org.apache.commons.lang.StringUtils;

	/**
	* Tools for encoding a decoding pinblock
	*
	* @author Tomas Jacko <tomas.jacko [at] monetplus.cz>

	# Install QEMU OSX port with ARM support
	sudo port install qemu +target_arm
	export QEMU=$(which qemu-system-arm)

	# Dowload kernel and export location
	curl -OL \
	https://github.com/dhruvvyas90/qemu-rpi-kernel/blob/master/kernel-qemu-4.1.7-jessie
	export RPI_KERNEL=./kernel-qemu-4.1.7-jessie

	# Download filesystem and export location

	5c5
	< File: /Users/anton/Documents/ifun/firmware/binary_unedited/mobileactivationd
	---
	> File: /Users/anton/Documents/ifun/firmware/mobileactivationd_2.bin
	20960,20961c20960
	< 0000000100013708 tbz w24, 0x0, loc_100013818
	<
	---
	> 0000000100013708 nop
	21032,21035c21031,21032

	default['sshd']['sshd_config']['AuthenticationMethods'] = 'publickey,keyboard-interactive:pam'
	default['sshd']['sshd_config']['ChallengeResponseAuthentication'] = 'yes'
	default['sshd']['sshd_config']['PasswordAuthentication'] = 'no'