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New
The latest blog posts to take off on Hacker News. 4,387 posts.
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Rsync replaced with openrsync on macOS Sequoia
On many Unix-based operating systems, rsync is a command line tool for transferring and synchronizing files on a computer, either between storage attached directly to the computer or between anothe…
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Deleting multiplayer from the Unreal engine can save memory
Although the title of this article might suggest otherwise, I don’t dislike Unreal’s multiplayer features. As someone who has worked on two different multiplayer games in Unreal, I enjo…
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Apple’s Darwin OS and XNU Kernel Deep Dive
A deep dive into Apple’s Darwin OS and XNU kernel architecture, tracing its evolution from Mach and BSD roots to powering macOS, iOS, and Apple Silicon. This post explores the hybrid kernel’s design, its adaptation to new hardware and security paradigms, and why XNU remains a uniquely resilient and scalable foundation…
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Database Protocols Are Underwhelming
If you’ve been in this trade for a while, you have probably seen dozens of debates on the merits and problems of SQL as a relational database query language. As an ORM maintainer, I have a few gripes with SQL, but overall it is workable, and anyway, it has so much inertia that there’s no point fantasizing about a…
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An interactive-speed Linux computer made of only 3 8-pin chips
Dmitry.GR: Interactive-speed Linux on a tiny board you can easily build with only 3 8-pin chips
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Notes on the Pentium's microcode circuitry
Most people think of machine instructions as the fundamental steps that a computer performs. However, many processors have another layer of ...
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Why I run FreeBSD for my home servers (2024)
Why FreeBSD instead of Linux for home servers? Exploring ZFS, jails, stability, and the reasons behind choosing FreeBSD for a home infrastructure.
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Why is this site built with C
Most of what I have written features in the category of notes-to-self. Mostly on how to do A or B.
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Convert Linux to Windows
Thesis: We should create a distro of Linux that runs Windows binaries by default via Wine.
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Optimizing Matrix Multiplication on RDNA3
Writing Super-Fast Matrix Multiplication with HIP, RGP, and ISA
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When you deleted /lib on Linux while still connected via SSH (2022)
Let's first not talk about why this can happen, but deleting /lib, /usr/lib, or some other essential runtime files happens quite a lot (as you can see: here, here, here, and here). In this post, I will only discuss what happens when you delete /lib on Linux and how to recover from that. The easy
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MySQL transactions per second vs. fsyncs per second (2020)
Just wondering how many transactions or writes per second MySQL can handle? While it depends on many factors, fundamentally, about as many transactions as MySQL can commit to disk per second. A modern disk can do ~1000 fsyncs per second , but MySQL will group multiple writes with each fsync. An okay rule-of-thumb…
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I want a good parallel computer
The GPU in your computer is about 10 to 100 times more powerful than the CPU, depending on workload. For real-time graphics rendering and machine learning, you are enjoying that power, and doing those workloads on a CPU is not viable. Why aren’t we exploiting that power for other workloads? What prevents a GPU from…
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After 47 years, OpenVMS gets a package manager (VSP)
Published: 17-03-2025 20:33 | Author: Remy van Elst | Text only version of this article
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Archival Storage
I gave a talk at the Berkeley I-school's Information Access Seminar entitled Archival Storage . Below the fold is the text of the talk with...
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Selective async commits in PostgreSQL – balancing durability and performance
Safely leverage PostgreSQL's asynchronous commit for significant performance gains
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In S3 simplicity is table stakes
From simple object storage to sophisticated table management, builders have always shaped S3's evolution. Andy Warfield discusses why making complex systems simple remains our north star at AWS.
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The Future Is Niri
The worst "street-cred" I have is that I've been using tiling window managers for thirty-five percent of my life: five years with Sway and two...
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Improving on std:count_if()'s auto-vectorization
To start off, we can leverage the STL for this calculation. std::count_if() more precisely:
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An epic treatise on error models for systems programming languages
Musings on the representation, propagation and handling of errors in existing programming languages, as well as thoughts on future systems. (15K+ words)
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Exploring Polymorphism in C: Lessons from Linux and FFmpeg's Code Design (2019)
Learn how Linux/FFmpeg C partial codebase is organized to be extensible and act as if it were meant to have “polymorphism”. Specifically, we’re going to briefly explore how Linux …