David Danziger dzeez

Overview

I'm tired of massive delay (500-1000 ms pings) while uploading large files. QoS helps some, but a significant portion remains due to bufferbloat (100-150ms). This leads to delay in VoIP calls and generally sluggish web browsing while uploading.

The new Codel algorithm in OpenWRT / Attitude Adjustment should help a lot. The results below show only ~5-6ms of added latency during uploads (i.e. 14ms vs 500+ms before!). Insane.

These instructions are for the TP-Link TL-WDR4300, because I got a good deal. If you have the money, buy a Netgear WNDR3800 and install CeroWRT, you'll probably see even better results.

Why the TP-Link TL-WDR4300

In short, its fully supported in OpenWRT Attitude Adjustment and works well for my needs:

Cheap

Description

This simple script will take a picture of a whiteboard and use parts of the ImageMagick library with sane defaults to clean it up tremendously.

The script is here:

#!/bin/bash
convert "$1" -morphology Convolve DoG:15,100,0 -negate -normalize -blur 0x1 -channel RBG -level 60%,91%,0.1 "$2"

	var CONSUMER_KEY = "<< YOUR KEY HERE >>";
	var CONSUMER_SECRET = "<< YOUR SECRET HERE >>";

	function getConsumerKey() {
	return CONSUMER_KEY;
	}

	function getConsumerSecret() {
	return CONSUMER_SECRET;
	}

	#!/usr/bin/env ruby
	# encoding: utf-8

	SILENT = ENV['SL_SILENT'] =~ /false/i ? false : true \|\| true
	VERSION = '2.2.23'

	# SearchLink by Brett Terpstra 2015 <http://brettterpstra.com/projects/searchlink/>
	# MIT License, please maintain attribution
	require 'net/https'
	require 'uri'

	(function () {
	var i, elements = document.querySelectorAll('body *');

	for (i = 0; i < elements.length; i++) {
	if (getComputedStyle(elements[i]).position === 'fixed') {
	elements[i].parentNode.removeChild(elements[i]);
	}
	}
	})();

	<html>
	<head>
	<title>HLK-RM04 Tool</title>
	<style>
	form {
	display: inline;
	}
	</style>

	</head>

	-- Two dashes start a one-line comment.

	--[[
	Adding two ['s and ]'s makes it a
	multi-line comment.
	--]]

	----------------------------------------------------
	-- 1. Variables and flow control.
	----------------------------------------------------

	/*
	* Accept control commands via USB.
	*
	* Commands start with '!' and end with '.'
	* Commands have three parts: action, pin, value: !AAPPVV.
	*
	* E.g. '!01p101.' is DigitalWrite, Pin1, value = 1
	*
	* Note: This is currently very crude. Much improvement could be made.
	* I think the use of strncpy is eating a lot of memory. Refactor?

	#!/usr/bin/env perl
	#
	# http://daringfireball.net/2007/03/javascript_bookmarklet_builder

	use strict;
	use warnings;
	use URI::Escape qw(uri_escape_utf8);
	use open IO => ":utf8", # UTF8 by default
	":std"; # Apply to STDIN/STDOUT/STDERR

	# ---------------------------------------------------------------------------
	#
	# Description: This file holds all my BASH configurations and aliases
	#
	# Sections:
	# 1. Environment Configuration
	# 2. Make Terminal Better (remapping defaults and adding functionality)
	# 3. File and Folder Management
	# 4. Searching
	# 5. Process Management

David Danziger dzeez

Overview

Why the TP-Link TL-WDR4300

Description

Results