fbartho

Performance on Synology RAIDs

(especially while expanding)

Warning: The exact commands may not match for your particular linux OS / Synology(NAS) device. I had to customize the commands after exploring my particular system's setup.

If you're new to linux, or this is a new piece of hardware / a new synology device, jump down to the section called "Inspecting a setup"

Contents

yossorion

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

eshelman

Latency Comparison Numbers
--------------------------
L1 cache reference/hit                       1.5 ns                      4 cycles
Floating-point add/mult/FMA operation        1.5 ns                      4 cycles
L2 cache reference/hit                       5   ns                      12 ~ 17 cycles
Branch mispredict                            6   ns                      15 ~ 20 cycles
L3 cache hit (unshared cache line)          16   ns                      42 cycles
L3 cache hit (shared line in another core)  25   ns                      65 cycles
Mutex lock/unlock                           25   ns
L3 cache hit (modified in another core)     29   ns                      75 cycles

TobiTobascoNollero

using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using UnityEngine.UI;

/* UI Particle Scaling script by Tobi Tobasco Nollero, questions: [email protected], http://tobiasnoller.com/
 * Just drag this script on any canvas which has child particle systems underneath. 
 * Add your resolution change listener to scale your particles when changing resolutions.
 * Prewarmed particle system emitting on begin play, will probably not be affected by the script the first time they fire.
 * Feel free to use this script in any project. 

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

puffnfresh

#include <Carbon/Carbon.h>

typedef uint64_t CGSConnection;
extern CGSConnection _CGSDefaultConnection(void);
#define CGSDefaultConnection _CGSDefaultConnection()

typedef uint64_t CGSSpace;
typedef enum _CGSSpaceType {
    kCGSSpaceUser,
    kCGSSpaceFullscreen,