Rafał Więcek DarkGL

Performance Engineering, Hardware and cache awareness with algorithm and data structures

Parallel Computing Course - Stanford CS149, Fall 2023
Performance-Aware Programming Series by Casey Muratori
Algorithms for Modern Hardware
Computer Systems: A Programmer's Perspective, 3/E - by Randal E. Bryant and David R. O'Hallaron, Carnegie Mellon University
Performance Engineering Of Software Systems - am MITOCW course
Parallel Programming 2020 by NHR@FAU
Cpu Caches and Why You Care

kubectl with ZSH (oh-my-zsh)

How to configure

Use the following commands to add the kubectl autocomplete to zsh:

mkdir -p ~/.oh-my-zsh/custom/plugins/kubectl-autocomplete/
kubectl completion zsh > ~/.oh-my-zsh/custom/plugins/kubectl-autocomplete/kubectl-autocomplete.plugin.zsh

%GetOptimizationStatus return a set of bitwise flags instead of a single value, to access the value, you need to take the binary representation of the returned value. Now, for example, if 65 is returned, the binary representation is the following:

(65).toString(2).padStart(12, '0');
// 000001000001

Each binary digit acts as a boolean with the following meaning:

The following is adapted from original instructions at https://www.expressvpn.com/support/vpn-setup/app-for-linux/#install

Log in from browser: https://www.expressvpn.com/sign-in
Copy activation code to clipboard
Download the .deb installation file
Go to terminal
cd ~/Downloads
sudo dpkg -i [installer file]
expressvpn activate
Paste activation code from clipboard when asked. There is no visual feedback, so be careful to paste only once asked and press enter if need be.

	// Needs Bun

	import biome from './biome.json';

	// Extracted from https://biomejs.dev/linter/rules/#recommended-rules
	const recommended = (await Bun.file('./recommended.txt').text())
	.split('\n')
	.map((x: string) => x.trim())
	.filter(Boolean);

	Per https://code.google.com/p/v8/codesearch#v8/trunk/src/runtime.cc


	%CreateSymbol
	%CreatePrivateSymbol
	%CreateGlobalPrivateSymbol
	%NewSymbolWrapper
	%SymbolDescription
	%SymbolRegistry
	%SymbolIsPrivate


	# https://medium.com/google-cloud/node-to-google-cloud-compute-engine-in-25-minutes-7188830d884e
	curl -sL https://deb.nodesource.com/setup_10.x \| sudo bash -
	sudo apt install nodejs

	#install dependencies
	#https://github.com/GoogleChrome/puppeteer/issues/290#issuecomment-322838700
	sudo apt-get install gconf-service libasound2 libatk1.0-0 libc6 libcairo2 libcups2 libdbus-1-3 libexpat1 libfontconfig1 libgcc1 libgconf-2-4 libgdk-pixbuf2.0-0 libglib2.0-0 libgtk-3-0 libnspr4 libpango-1.0-0 libpangocairo-1.0-0 libstdc++6 libx11-6 libx11-xcb1 libxcb1 libxcomposite1 libxcursor1 libxdamage1 libxext6 libxfixes3 libxi6 libxrandr2 libxrender1 libxss1 libxtst6 ca-certificates fonts-liberation libappindicator1 libnss3 lsb-release xdg-utils wget

	# Source:
	# https://www.cloudflare.com/ips
	# https://support.cloudflare.com/hc/en-us/articles/200169166-How-do-I-whitelist-CloudFlare-s-IP-addresses-in-iptables-

	for i in `curl https://www.cloudflare.com/ips-v4`; do iptables -I INPUT -p tcp -m multiport --dports http,https -s $i -j ACCEPT; done
	for i in `curl https://www.cloudflare.com/ips-v6`; do ip6tables -I INPUT -p tcp -m multiport --dports http,https -s $i -j ACCEPT; done

	# Avoid racking up billing/attacks
	# WARNING: If you get attacked and CloudFlare drops you, your site(s) will be unreachable.
	iptables -A INPUT -p tcp -m multiport --dports http,https -j DROP

	<?php
	/**
	* WordPress opcache preloading.
	* Requires PHP >= 7.4.
	*
	* @author Konrad Fedorczyk <[email protected]>
	* @link https://stitcher.io/blog/preloading-in-php-74
	*
	* @version 1.0.0
	*/

	// pnpm -r -c exec 'node /path/to/machette.js'

	const util = require('util');
	const exec = util.promisify(require('child_process').exec);
	const process = require('process');
	const path = require('path');

	async function main() {
	const cwd = process.cwd();