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@GraxRabble
GraxRabble / sodium_demo.c
Last active October 28, 2018 03:33
This c file demostrates how to use each libsodium functions and lets you play with them to see their outputs.
/*
* GraxRabble
* 04 MAY 2014
* Note this was created for the 4.5 version of libSodium.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "sodium.h" /* library header */
@rofl0r
rofl0r / init.c
Created August 6, 2013 21:15
minimal init daemon by rich felker, author of musl libc
#define _XOPEN_SOURCE 700
#include <signal.h>
#include <unistd.h>
int main()
{
sigset_t set;
int status;
if (getpid() != 1) return 1;
@jboner
jboner / latency.txt
Last active May 17, 2024 01:05
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD