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Windows NT: Peeking into the Cradle
A review of "Showstopper!" by G. Pascal Zachary and my own reflections
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 4,390 posts.
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Future instruction set: AVX-512
Software optimization resources | E-mail subscription to this blog | www.agner.org
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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 ...
4144
The hidden cost of QUIC and TOU (2016)
Some new proposed protocols will encrypt the transport layer headers. Encryption is good, so more encryption must be better, right? Unfortunately there's going to be a huge hidden cost that'll be paid by anyone troubleshooting networking problems.
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Preparing for the .NET 10 GC
In .NET 9 we enabled DATAS by default. But .NET 9 is not an LTS release so for many people they will be getting DATAS for the first time…
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Installing A/UX on the Quadra 610 (2018)
In this post, I’m going to go through the process of setting up Apple’s A/UX on a Quadra 610. It’s been a long time in the making - I think I had the hardware for nearly a year before I finally got A/UX running properly!
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You are not Google. You are not Netflix
You are also not Spotify, Amazon, Apple, Microsoft, Facebook or one of several other big tech companies I could mention here. If I have excluded anybody reading this - I am sorry.Maybe you will still enjoy the read. For everyone else: This article is probably for you. To give you...
4148
Nginx with dynamic upstreams
I recently made a setup at work where I had a Nginx server facing the user, which would forward requests to a service running behind an AWS Elastic Load Balancer (aka. ELB). That in itself doesn’t sound like a difficult task, you just find the hostname for the ELB and point Nginx at it with a proxy_pass statement like…
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Exercises in Emulation: Xbox 360’s FMA Instruction
Years ago I worked in the Xbox 360 group at Microsoft. We were thinking about releasing a new console, and we thought it would be nice if that console could run the games of the previous console. E…
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A small Rust binary indeed (2022)
Can we make a Rust program that's as small as it's assembler equivalent?
4151
Multi-Kernel Drifting
Using truss, dtrace & ctfconvert to figure out a faulty illumos kernel module.
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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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Node.js, Pipes, and Disappearing Bytes
Someone in one of my online communities recently asked about why their Node command was dropping output when piped to another command:
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50 Bytes of Code That Took 4 GB to Compile (2013)
While doing evil things with macros and the inline assembler (trying to run a weird test whose purpose is not really relevant) I managed to write a program that caused Visual Studio’s C++ compiler …
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Of Sun Ray laptops, MIPS and getting root on them
I like Sun Ray laptops. They make surprisingly useful thin clients. Here, going from right to left, I'm playing Quake on my Solaris UltraBoo...
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Pruning spaces from strings quickly on ARM processors
Suppose that I give you a relatively long string and you want to remove all spaces from it. In ASCII, we can define spaces as the space character (' '), and the line ending characters ('\r' and '\n'). I am mostly interested in algorithmic and performance issues, so we can simplify the problem by removing all ……
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AVX-512 Mask Registers, Again
Taking a second look at the newly introduced mask registers, this time with the benefit of a SKX die shot from Fritzchens Fritz.
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Containers from first principles
You’ve likely heard everyone at the office or online proclaim that “K8s has eaten everyone’s lunch!” or that “everything should be in a docker container!”. While there are advantages to the above methodologies; it’s very easy to have cargo-culted their adoption; especially for Kubernetes (K8s). I find the biggest…
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Performance of WebAssembly Runtimes in 2026
I wanted to know if WebAssembly runtimes are getting faster.
4163
Zig Profiling on Apple Silicon
If you’re a developer rocking an Apple Silicon Mac and writing in Zig, congratulations - you’ve chosen the scenic route through the desert of profiling tools. It’s just you, your code, and a tumbleweed named Apple Instruments. But don’t worry - we’ll try to find some oases. Okay, it’s not that bad, but we’re far away…
4164
Writing a full-text search engine using Bloom filters
A few minutes ago I came across a Hacker News post that detailed a method of adding search to your static site. As you probably know, adding search to a static site is a bit tricky, because you can’t just send the query to a server and have the server process it and return the results. If you want full-text search…
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Making the most of Apple Silicon power: 2 Core capabilities (2022)
P cores are conventional in that they can deliver excellent performance at maximum frequency, but with high power use. E cores may take 4 times as long for a task, but use less than a third of the …
4166
Lanzaboote – NixOS Secure Boot
Secure Boot protects a system from an attacker that compromises the boot flow. For example, without Secure Boot it is easy to replace the code that reads your disk encryption password and store it somewhere where the attacker can pick it up later. So ideally you want Secure Boot to be enabled to limit the code that…
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Bytecode interpreters for tiny computers (2007)
I've previously come to the conclusion that there's little reason for using bytecode in the modern world, except in order to get more compact code, for which it can be very effective. So, what kind of a bytecode engine will give you more compact code?
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PingFS
shysecurity blog
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This year in LLVM
Towards the end of last year, I switched from working on PHP at JetBrains, to working on LLVM at Red Hat. While it was already under discussion beforehand, this catalyzed the creation of the PHP foundation , which now pays multiple people to work on PHP. Special thanks for this go to Roman Pronskiy, who did most of…
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