Alex Toldaiev xealits

Thunderbolt Networking Setup on Linux

This guide documents the steps to enable and configure Thunderbolt networking on your Linux system (e.g., Ubuntu, Proxmox). It covers loading the necessary kernel modules, ensuring persistent interface naming, configuring a fixed IP address, and testing throughput with iperf3. Note that Thunderbolt 3/4 hardware advertises a raw bandwidth of 40 Gbps, but practical throughput is typically lower due to half‑duplex operation, protocol overhead, and system constraints.

Hardware Used in This Guide

This guide was developed and tested with the following hardware:

CPU: AMD Ryzen 9 PRO 6950H
- 8 cores / 16 threads
3.3 GHz base frequency / 4.94 GHz boost

This gist contains various scripts for scraping metrics. Mostly useful for processing the contents of Puppet Enterprise support bundles:

sar2influx.rb: A Ruby script that uses sadf to turn SAR archives into InfluxDB line format. For best results, run from a Linux VM using a recent operating system. Such as Ubuntu 22.04.
pdb2influx.sh: A bash script that uses awk and mlr to extract command processing times from puppetdb.log files.
top-api-calls.sh: Extracts the 10 most popular API calls from *-access.log along with their median and max duration grouped into 30 minute periods (Puppet $runinterval). Uses awk and mlr.

Effective Modern CMake

Getting Started

For a brief user-level introduction to CMake, watch C++ Weekly, Episode 78, Intro to CMake by Jason Turner. LLVM’s CMake Primer provides a good high-level introduction to the CMake syntax. Go read it now.

After that, watch Mathieu Ropert’s CppCon 2017 talk Using Modern CMake Patterns to Enforce a Good Modular Design (slides). It provides a thorough explanation of what modern CMake is and why it is so much better than “old school” CMake. The modular design ideas in this talk are based on the book [Large-Scale C++ Software Design](https://www.amazon.de/Large-Scale-Soft

With this wiki2html.sh bash script and pandoc program, you can convert markdown to html.

Usage: In the vim list section of the .vimrcfile, include options:

let g:vimwiki_list = [{'path': ‘your_wiki_place',
  \ 'path_html': ‘wiki_html_location’,
  \ 'syntax': 'markdown',
 \ 'ext': '.md',


	#include <tbb/concurrent_queue.h>
	#include <tbb/concurrent_priority_queue.h>
	#include <iostream>


	int array[10] = { 0,11,22,33,44,55,66,77,88,99 };

	# This is heavily based in the code here:
	# https://gist.github.com/enpassant/0496e3db19e32e110edca03647c36541
	# Special thank you to the user enpassant for starting it https://github.com/enpassant

	#!/bin/bash

	SYNTAX="$2"
	EXTENSION="$3"
	OUTPUTDIR="$4"
	INPUT="$5"

	--------------------------------------------------------------------------
	# ofed_info -s
	--------------------------------------------------------------------------
	Find Mellanox Adapter Type and Firmware/Driver version
	ConnectX-4 card

	# lspci \| grep Mellanox
	0a:00.0 Network controller: Mellanox Technologies MT27500 Family [ConnectX-3]
	# lspci -vv -s 0a:00.0 \| grep "Part number" -A 3
	# lspci \| grep Mellanox \| awk '{print $1}' \| xargs -i -r mstvpd {}

	# IMPORTANT!
	# This gist has been transformed into a github repo
	# You can find the most recent version there:
	# https://github.com/Neo23x0/auditd

	# ___ ___ __ __
	# / \| __ ______/ (_) /_____/ /
	# / /\| \|/ / / / __ / / __/ __ /
	# / ___ / /_/ / /_/ / / /_/ /_/ /
	# /_/ \|_\__,_/\__,_/_/\__/\__,_/

	# from https://forum.nim-lang.org/t/1188#7366 by Jehan
	# most of the time only the dereference operator is needed, import it like this:
	# from ptrmath import `[]`

	template `+`*[T](p: ptr T, off: int): ptr T =
	cast[ptr type(p[])](cast[ByteAddress](p) +% off * sizeof(p[]))

	template `+=`*[T](p: ptr T, off: int) =
	p = p + off

	#!/bin/zsh
	# git-fshow - git commit browser
	#
	# https://gist.github.com/akatrevorjay/9fc061e8371529c4007689a696d33c62
	# https://asciinema.org/a/101366
	#

	git-fshow() {
	local g=(
	git log