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FreeBSD Zero to Desktop Speedrun Challenge

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I decided to take part in the FreeBSD Zero to Desktop speedrun challenge – https://wiki.freebsd.org/Speedruns –...

I decided to take part in the FreeBSD Zero to Desktop speedrun challenge – https://wiki.freebsd.org/Speedruns – described here. On my 13 years old ThinkPad W520 from 2011 I managed to do that in 4:23 total time. As previous leader used IceWM for the task – I have chosen Openbox as its also small. The operations and ...

freebsd

Tiny Undervalued Hardware Companions

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hardware

Sensible Firefox Setup

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browsers

Keycloak Identity and Access Management on FreeBSD

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Many times I wrote about FreeIPA/IDM – but I have one problem with it – its...

Many times I wrote about FreeIPA/IDM – but I have one problem with it – its not currently possible to run FreeIPA on FreeBSD … so I searched for other open source alternatives and found Keycloak. What surprised me even more is that its even available in the FreeBSD Ports as net/keycloak port. So I wanted to check ho...

freebsd linux

Connect FreeBSD 14.0-STABLE to FreeIPA/IDM

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In the open source world everything lives/evolves/changes. This is why the new version of connecting latest...

In the open source world everything lives/evolves/changes. This is why the new version of connecting latest FreeBSD 14.0-STABLE system to the FreeIPA/IDM is needed. One of the things that changed is that security/sssd is now deprecated and security/sssd2 is its successor. Also new version of ports-mgmt/poudriere-dev...

freebsd linux

Heresy II – Comments Are Code

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I hold an unpopular stance: code comments are as important as the code itself. OK, maybe...

I hold an unpopular stance: code comments are as important as the code itself. OK, maybe that’s a little overstated, but I maintain that code comments are critical to code readability and maintainability. Before you see if I weigh more than a duck, please hear me out… When I was a college undergrad, I had the privil...

practices

Important efibootmgr(8) Command

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Almost 5 years ago – in my older job – I wrote about creating FreeBSD Enterprise...

Almost 5 years ago – in my older job – I wrote about creating FreeBSD Enterprise 1 PB Storage solution. I no longer work there but one of my mates from there contacted me with interesting problem. The FreeBSD system was installed on two Intel DC S3500 240 GB SSD drives in ZFS mirror – the usual Auto (ZFS) from the F...

freebsd

Tiny UPS for Tiny NAS Reloaded

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Last time when I wrote Tiny UPS for Tiny NAS – I fucked up. I did...

Last time when I wrote Tiny UPS for Tiny NAS – I fucked up. I did not tested the solution enough and provided false information – I apologize for that. This time I did the homework and after I get many comments and recommendations I decided to try two other solutions that actually work as UPS and provide the power a...

freebsd hardware

Tiny UPS for Tiny NAS

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I am a big fan of building things by yourself. That also includes my NAS instead...

I am a big fan of building things by yourself. That also includes my NAS instead of using something prebuilt such as some Synology or QNAP NAS box. Although I must say that these small NAS devices with 2.5 disks slots like Synology DS416SLIM or QNAP TS-453S PRO look really interesting … if I could only put FreeBSD t...

freebsd hardware

Frame pointers vs DWARF – my verdict

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A couple of weeks ago I wrote a blog posting here about Fedora having frame pointers...

A couple of weeks ago I wrote a blog posting here about Fedora having frame pointers (LWN backgrounder, HN thread). I made some mistakes in that blog posting and retracted it, but I wasn’t wrong about the conclusions, just wrong about how I reached them. Frame pointers are much better than DWARF. DWARF unwinding mig...

performance

Enphase Envoy-S “Data Scraping”.

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If you are interested in other Enphase information the following other pages may also be of...

If you are interested in other Enphase information the following other pages may also be of interest: What is inside the Enphase Envoy-S (teardown) Reverse Engineering the Enphase Installer Toolkit Enphase Envoy-S Open Ports! I’ve recently had to interface with an EnPhase Envoy Solar PV system. The annoying thing is...

reversing

FreeBSD Desktop – Part 29 – Configuration – Audio Improvements

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I recently added some improvements to my audio configs and settings on FreeBSD desktop. Each of...

I recently added some improvements to my audio configs and settings on FreeBSD desktop. Each of these ideas is nothing special or groundbreaking – but they all improve usability of daily FreeBSD desktop experience. The Table of Contents for this article contains. Default Audio Output PulseAudio Output Change Openbox...

audio freebsd

Class invariants

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The primary motivation for defining a class in C++ is to reflect and maintain a class...

The primary motivation for defining a class in C++ is to reflect and maintain a class invariant. In this post we will see what class invariants are and how you deal with them. Class invariants are important part of C++, even though there is no “invariant” keyword in C++. Contrast the following two class definitions:...

c++

Tail-Recursive & Body-Recursive Function Performance Across Elixir & BEAM versions – what’s the impact of the JIT?

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I’ve wanted to revisit “Tail Call Optimization in Elixir & Erlang – not as efficient and...

I’ve wanted to revisit “Tail Call Optimization in Elixir & Erlang – not as efficient and important as you probably think” (2016) for a while – so much so that I already revisited it once ~5 years ago to show off some benchee 1.0 features. As a reminder, in these the results were: body-recursive was fastest on input ...

elixir erlang performance

Franz Morat KG tv-computersystem 6800

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Recently, there was a computer on ebay.de which I never heard about before which turned out...

Recently, there was a computer on ebay.de which I never heard about before which turned out to be the quirkiest, most interesting and innovative model I learned about in a long time. No one else bid on it, so I got it for a low price. It is now the oldest computer I own. Meet the 1976 “tv-computersystem 6800” of the...

hardware

Low-level thinking in high-level shading languages 2023

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“Low-level thinking in high-level shading languages” (Emil Persson, 2013), along with its followup “Low-level Shader Optimization...

“Low-level thinking in high-level shading languages” (Emil Persson, 2013), along with its followup “Low-level Shader Optimization for Next-Gen and DX11“, is in my top 3 most influential presentations, one that changed the way I think about shader programming in general (since I know you are wondering the other 2 are...

graphics

FreeBSD Desktop – Part 28 – Configuration – Corner Actions

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I am not a big fan of macOS desktop experience. I use latest macOS daily on...

I am not a big fan of macOS desktop experience. I use latest macOS daily on M1 laptop and its quite far from what I call ‘productive’ environment. Yes – all the ‘enterprise’ applications are the … but that does not make a productive desktop alone. To be honest – the version that I enjoyed the most was Mac OS X Snow ...

freebsd linux mac

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