Dmitry Myadzelets DmitryMyadzelets

Performance tests

I compare performance of my devices with common tools.

For the storage and overall cpu-memory-storage performance:

hdparm -tT /dev/sd?

For the memory:

sudo touch /etc/systemd/network/99-default.link

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=839605#25

Record the current audio stream, and convert to mp3.

parec -d 0 | lame -r -V0 - out.mp3

Split the file based on silence in it. Source.

sox -V3 in.mp3 out_.mp3 silence -l 1 0.5 0.1% 1 2.0 0.1% : newfile : restart

Layouts for 40% keyboards

curl -s https://raw.githubusercontent.com/sivel/speedtest-cli/master/speedtest.py | python -

Example output:

Retrieving speedtest.net configuration...
Testing from WIND (151.48.54.99)...
Retrieving speedtest.net server list...
Selecting best server based on ping...

	<link href='http://fonts.googleapis.com/css?family=Open+Sans:700' rel='stylesheet' type='text/css'>

	<a id="view-code" href="http://codepen.io/virgilpana/pen/wBOBYo" target="_blank">VIEW CODE</a>

	<div id="window">
	<div id="header">
	<div class="circle"></div>
	<div class="circle"></div>
	<div class="circle"></div>
	</div>

	#!/bin/bash -e

	# /usr/local/sbin/raspi-monitor
	# Script to enable and disable the HDMI signal of the Raspberry PI
	# Inspiration: http://www.raspberrypi.org/forums/viewtopic.php?t=16472&p=176258

	CMD="$1"

	function on {
	/opt/vc/bin/tvservice --preferred

	// Invokes callback when DOM is ready for manipulation
	// Usage: ready(function () {});

	function ready(callback) {
	// Motivation:
	// https://gomakethings.com/a-native-javascript-equivalent-of-jquerys-ready-method/
	// Docs:
	// https://developer.mozilla.org/en/docs/Web/API/Document/readyState
	var loading, done;

	{
	"capricorn":"Capricorno",
	"aquarius":"Acquario",
	"pisces":"Pesci",
	"aries":"Ariete",
	"taurus":"Toro",
	"gemini":"Gemelli",
	"cancer":"Cancro",
	"leo":"Leone",
	"virgo":"Vergine",

	const factorial = (n) => n ? n * factorial(n - 1) : 1
	// Given n, choose k - [Combination](https://en.wikipedia.org/wiki/Combination)
	const C = (n, k) => factorial(n) / (factorial(k) * factorial(n-k))