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Debugging my new network, when 10 Gigabit Ethernet Runs at 300 Megabits
I've been moving my home storage over to a UniFi UNAS Pro 8 as part of a larger ...
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The latest blog posts to take off on Hacker News. 6,942 posts.
122
Saving 100 terabytes of memory by optimizing 1.1.1.1's DNS cache
Five Rust-level memory optimizations to the DNS cache layout of Big Pineapple cut per-entry memory by 56%, freeing approximately 100 TB of memory across Cloudflare's fleet.
123
Asahi Linux Progress Report: Linux 7.2
Porting Linux to Apple Silicon
124
IBM Unveils Next Generation Dual-Architecture Processor for IBM Z and LinuxONE
The new processor is being developed to allow organizations to run Arm-native Linux environments simultaneously with z/OS and Linux on IBM Z, while benefiting from IBM’s established security, reliability, and scale.
125
Hunting Down a Go Runtime Bug on 32-Bit Embedded Systems
A customer's Go application kept crashing on a 32-bit embedded Linux system. We traced the fatal netpoll error to a pointer aliasing bug in the Go runtime.
126
Actually Queryable Executables
I was pleasantly surprised and happy to see that my article ‘Your executable is a SQLite database’ resonated with people. It is a format I have been thinking about for a while, and the idea seems to have struck a chord with others.
127
Run OpenBSD on DigitalOcean for $4/month
My homepage now runs on OpenBSD with httpd(8) and Let's Encrypt via acme-client(1) . I previously hosted it on GitHub Pages and then eventually moved to Cloudflare Pages because both options were free and easy. Free and easy is cool, and I understand that writing software full-time leaves us wanting absolutely nothing…
128
SeL4 security proofs now complete on AArch64
Proofcraft’s Chief Engineer Rafal Kolanski has completed a major “architecture split” overhaul of the seL4 proofs, resulting in the removal of 250k lines of proof and strengthening the link between proofs on different architectures. These changes will significantly reduce future effort required to maintain and extend…
129
Monzo Stand-In
Our customers reasonably expect to be able to spend on their card, make bank transfers and pay their bills 24 hours a day, 365 days a year. Their lives don’t have downtime for maintenance so nor should we. We dedicate a lot of our engineering effort to minimise the risk of downtime during technical migrations and…
130
Executable Is a SQLite Database
I have been probably obsessed with two things in the last few years: Nix as a tool to explore innovative ideas that require the capability to rebuild the world and replacing ELF with SQLite as an executable format. You might have noticed that these two ideas are well suited to each other.
131
What Is a Harness?
An agent harness is a piece of software that provides an environment for an AI model to operate within.
132
JIT Compiling Code in 5μs
Build a copy-and-patch JIT compiler in Rust, generate ARM64 machine code, and benchmark it against an interpreter and handwritten implementation.
133
Fast and Hard Code
People pick languages differently with LLMs.
134
hdiutil is deprecated in macOS 27 Golden Gate
The macOS command-line tool hdiutil is used to manipulate disk images. From the WHAT'S NEW section of man hdiutil on the latest macOS 27 Golden Gate beta:
135
There's no reason for software to be slow anymore
The other day, I saw a viral tweet saying that people talking about how LLMs are causing slow, bloated, code are going to eat crow once they re-write everything in super-optimized assembly. We're not quite at the point where we want to write everything in assembly , but some variant of what Nolan Lawson said about…
136
What happens when a GPU reads memory
Following an LDG.E SASS instruction through the hardware units in an RTX 4090.
137
Zig’s Io.Threaded is neat
std.Io.Threaded is one of the implementations of Zig's new Io interface that enables concurrency. This is a boring just use threads impl. I personally find it neat though --- it does this weird thing that I wanted to do for ages, that to my knowledge no one else is doing properly, and implements it better than I…
138
TigerBeetle Core System Architecture: Deconstructing Performance Engineering
An in-depth technical analysis of TigerBeetle's core architecture, exploring how static memory allocation, zero-copy io uring interfaces, and Zig-based…
139
We rebuilt the Linux MicroVM stack on Apple Silicon
Firecracker needs KVM and therefore a Linux host, and the image tooling around it needs loop mounts and Linux userland. We rebuilt the stack on Apple's Virtualization.framework to boot the same OCI images as microVMs on macOS and on Linux.
140
The August 17 outage
An update on the August 17 outage and the steps we're taking to improve reliability.
141
SpacetimeDB: a short technical review
This blog post has been archived! SpacetimeDB has improved a lot since I initially published this technical review, and most of the technical details in it no longer apply.
142
Linux 7.2
Igalia is an open source consulting firm specialised in the development of innovative projects and solutions. Our engineers have expertise in a wide range of technological areas, including browsers and client-side web technologies, graphics pipeline, compilers and virtual machines. We have the most WPE, WebKit…
143
A look under our trunk: what's in our compute
Compute is the brain of the Waymo Driver, translating raw sensor data into real-time driving commands. Operating demonstrably safe, physical AI on the road demands a fundamental shift towards a system engineered for deterministic, low-latency performance. Over the past decade, we have co-designed our hardware…
144
Linux 7.3 improves performance when running out of vRAM
Earlier this year, I blogged about work I did to improve VRAM management for games. Now, after many months of floating around in mailing lists, the kernel patches are finally merged upstream and queued for Linux 7.3! Hooray!
145
The Benchmarkpocalypse
There's been a lot of talk about the vulnpocalypse, to which I don't have much to add because I'm not a security person, but I haven't seen much discussion on the closely related (and to be fair, less serious, issue), the benchmarkpocalypse.
146
Tracking down a Zsh history data loss bug
For many years, I sometimes discovered that commands I was sure I had run were no longer present in my Z shell history file (~/.zsh_history). In this article, I will show you how I tracked down the bug. Spoiler: ultimately, patching Zsh to make it crash loudly and analyzing the crash’s core dump was the winning…
147
RISC-V: They Should Have Known Better
Dmitry.GR: I am often asked to explain my distaste for RISC-V. Here it is.
148
How Compaction Works in Pi
Why compaction is needed for large language models and how Pi implements it
149
Kubernetes on Oxide: How customer needs shaped our integrations
How customer needs shaped Oxide's Kubernetes integrations.
150
SIMD in the 90s: Programming Intel's Pentium MMX
If you used PCs in the 90s, you probably remember the 'Intel Inside MMX' stickers. This article explores Intel's major attempt at bringing SIMD instructions to mainstream desktop CPUs.