Every blog post that took off on Hacker News, ranked by the votes of its best submission. 6,947 posts.
TL;DR: Some Linux distros and even different kernel versions within a distro have disabled IRQ time accounting. In such case, your monitoring tools will report zero time spent in hardware interrupt handlers (shown as %hi, %irq, hiq, etc). It’s easy to check how your kernel is behaving by looking at /proc/stat and you…
Processors are driven by a clock, which controls the timing of each step inside the chip. In this blog post, I'll examine the clock-generati...
This post explores Git commit history as a database where ‘git log’ is the query language. Learn about Git’s custom query index – the commit-graph file – and how to make sure it's enabled in your repositories.
Upon hearing the word 'bootloader', many people cower in fear. It seems like a scary low-level thing that's very easy to mess up. To dispel some of this fear, I'm going to walk through making a super simple bootloader/OS, assuming only a basic level of familiarity with assembly language and how computers work.
Updated: 2023-01-06 About a year ago I was bitten by the PL bug. It started with reading Crafting Interpreters and discovering the wonders hidden under the hood of a compiler. I am also been a big fan of Emacs, and this started to get me interested in how its interpreter works. At the same time, I was reading the Rust…
Writing a minimal x86-64 JIT compiler in C++ that runs on macOS, Linux and WSL - Part 2
Yes, that familiar little PC peripheral. The one that toggles a single keyboard/mouse/display ensemble between two or more connected machines.
Regarding the example #5, I must be confused about the definition of a sequence point because the resulting assembly output seems to be non-ANSI C:
How distributed serverless compute changes the game on whats possible
Written pieces, talks, and other bits by Zach Holman.
So, Windows 10 has just been released, and with it Ahead Of Time (AOT) compilation feature .NET native . Google also just recently introduc...
This is one of these things that look very obvious to me, to the point where it seems not worth discussing. However, I've heard the idea that "hardware magically makes things cheap" from several PhDs over the years. So apparently, if you aren't into hardware, it's not obvious at all.
"What are folks’ views on systems so large where cold-starting the whole system is almost impossible?"... — M'colleague, Shivam, In A Slackroom Next Door.
It took six whole seconds to merge 15,000 arrays with an average size of 5 elements with .concat. What the hell is the Javascript's .concat method doing under the hood?
From the very beginning , we built Chrome to be the fastest browser possible. The faster Chrome is, the faster you find the information you ...
2022 September 10 What is the best media for long term storage is a question that I read frequently from online forums. First and foremost, as far as I’m aware there is no real “set it and forget it” long term storage. In this digital age, data needs to be validated regularly and cycled to a new media every 5-10 years…
Managing complexity within an application is one of the key challenges for any software developer. Cleanly reconciling new features with existing architectures is something we strive for.
I saw an opportunity to fix self-hosted runners for GitHub Actions. Actuated is now in pilot and aims to solve most if not all of the friction.
Between our ESP32 prokaryotic organisms and our 24/7 Internet-enabled megafauna servers, there exists a vast and loosely-defined ecosystem of things the B2B world likes to call computer appliances. Picture a bespoke Pi 4 packaged up neatly with some Python scripts, a little fancy plastic embossing, and maybe a…
Published: 05-07-2026 20:33 | Author: Remy van Elst | Text only version of this article
We compare NGINX performance in bare-metal and virtualized (hypervisor) environments, finding a small but measurable performance cost for hypervisors. We also find that performance in Kubernetes environments is worse for network-bound but not CPU-bound operations.
Multiple installation media are provided for PC, Raspberry Pi, and MNT Reform. For PC, burn an .iso file to CD, or dd it directly to USB media. For Raspberry Pi or MNT Reform, dd an .img file directly to sdcard.
A Rust object that survives program restart thanks to Rust allocators, systemd's file descriptor store, and syscall memfd_create.
The typical audio environment for HomePod has many challenges — echo, reverberation, and noise. Unlike Siri on iPhone, which operates close…
In this post, I’m going to show benchmark results of the recently released PostgreSQL 10.1. I’ve benchmarked the DB on these OSes (all are 64-bit):
