Tomas tomasdelvechio

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

Setup Phpcs for Sublime Text

This plugin adds PHP CodeSniffer, PHP Code Beautifier and Fixer, PHP Coding Standards Fixer, the PHP Linter, PHP Mess Detector, Scheck support to Sublime Text.

For more information about this plugin such as features, installation requirements etc, please see: http://benmatselby.github.io/sublime-phpcs

Prerequisites

Download and install composer

curl -sS https://getcomposer.org/installer | php

Anti-hype LLM reading list

Goals: Add links that are reasonable and good explanations of how stuff works. No hype and no vendor content if possible. Practical first-hand accounts of models in prod eagerly sought.

Foundational Concepts

	#!/usr/bin/env python
	# coding: utf-8

	import argparse
	import os
	import sys
	import time
	import atexit
	import logging
	import signal

	#!/usr/bin/env bash

	# global parameters
	g_tmp_folder="ncdc_tmp";
	g_output_folder="ncdc_data";

	g_remote_host="ftp.ncdc.noaa.gov";
	g_remote_path="pub/data/noaa";

	// create file:
	sudo vim /usr/share/applications/intellij.desktop

	// add the following
	[Desktop Entry]
	Version=13.0
	Type=Application
	Terminal=false
	Icon[en_US]=/home/rob/.intellij-13/bin/idea.png
	Name[en_US]=IntelliJ

	#!/bin/bash
	###
	### my-script — does one thing well
	###
	### Usage:
	### my-script <input> <output>
	###
	### Options:
	### <input> Input file to read.
	### <output> Output file to write. Use '-' for stdout.

	#!/usr/bin/env python3
	"""EC717 Bluetooth Headset Connector for Linux/PulseAudio

	Version 20210228.01


	RATIONALE
	---------

	I got a bluetooth headset as a gift and couldn't get it to work with Linux.