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X Window System Basics (2014)
Since this article contains a lot of interactive demos relying on fairly modern browser technology, let's make sure that everything is OK before continuing.
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 555 posts.
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FreeBSD Home Audio Studio
Another guest post by @NeoMoevius from Twitter. Same as earlier with the Native Urban Terror on FreeBSD article. This time it will be about setting up Home Audio Studio on a FreeBSD 13.1 system. Th…
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Keycloak with PostgreSQL on Kubernetes
In this article we will learn how to deploy Keycloak with PostgreSQL on Kubernetes. We will first do everything manually with separate YAMLs and then later with Helm. Our k8s environment will run i…
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Going faster by duplicating code
This function doesn't know the value being multiplied until it is called. The compiler (gcc, O2) emits a generic integer multiply instruction in its loop body.
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Everything I've learned building the fastest Arm desktop
This is the fastest Arm desktop in the world, yes, even faster than the M2 Ultra Mac Pro. And today, I made it even faster. I upgraded everything: Faster RAM, 128 core CPU, 40 series GPU, I did it all, and we'll see how much we can obliterate the M2 Mac Pro. 128 cores—that's five times more cores, I'm also going to…
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Unpacking Elixir: Real-Time and Latency
Elixir was built on Erlang. Erlang was built to provide "consistently low latency" and a few other audacious goals. Note, this is not a hard realtime constraint. It is soft, squishy and yet, important and real. It makes Erlang unusually suitable to systems where latency matters and where a near-realtime experience is…
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Trying chDB, an embeddable ClickHouse engine
A lightweight in-process SQL OLAP engine, powered by ClickHouse.
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Apple has just released the first Rapid Security Response for Ventura
Apple has just released the first of its new Rapid Security Responses (RSRs) for macOS 13.3.1 Ventura. This is indicated as macOS Rapid Security Response 13.3.1 (a), and is just just over 300 MB to…
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Graviton 3, Apple M2 and Qualcomm 8cx 3rd gen: a URL parsing benchmark
Whenever you enter a URL into a system, it must be parsed and validated. It is a surprisingly challenging task: it may require hundreds of nanoseconds and possibly over a thousand cycles to parse a typical URL. We can use URL parsing as a reasonable benchmark of a system performance. Of course, no single measure ……
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QOA, the Quite OK Audio Format
Audio formats typically fall into one of three categories: “lossless” , “complicated” or “bad” . After developing a simple image format last year, I tried to come up with an audio format that fits neither of these categories.
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What happens when you open a terminal and enter `ls’
This article explores how terminal emulators function, decoding the process of sending commands to the shell for execution. Unveil the mystery behind what happens when you open a terminal and enter Is.
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The shell and its crappy handling of whitespace
From the highly eclectic blog of Mark Dominus
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Boot to Vim, Vim as Pid 1 (2014)
Published: 18-09-2014 | Author: Remy van Elst | Text only version of this article
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Curl 8 Is Faster
First: performance is tricky and bechmarking even more so. I will talk some numbers in this post but of course they are what I have measured for my specific tests on my machine. Your numbers for your test cases will be different. Over the last six months or so, curl has undergone a number of … Continue reading curl 8…
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The Basics of Arm64 Assembly
Just one instruction at a time!
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Linux is Making Apple Great Again
My personal website and blog
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It's TCP vs. RPC All over Again
We’ve written previously about the fact that the Internet seems to be missing a standard protocol for the request/response paradigm, with repeated attempts to force-fit TCP leading to inevitable mismatches. Sometimes we feel that we are the only people who think this way, with our networking
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Why you might want async in your project
There is a common sentiment I’ve seen over and over in the Rust community that I think is ignorant at best and harmful at worst.
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Gallery of Processor Cache Effects
Most of my readers will understand that cache is a fast but small type of memory that stores recently accessed memory locations. This description is
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A dive into the AMD driver workflow
I ended up getting a response from high level people at AMD. It was still very light on any real technical information, but it did include some great phrases like “I am able to replicate the issues you are facing” and some mockable phrases like “We are hoping that this will improve your perception of AMD products and…
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Advanced Performance Extensions (APX)
These extensions expand the x86 instruction set with access to registers and features that improve performance.
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Temporal .NET – Deterministic Workflow Authoring in .NET
A high-level overview of Temporal's new .NET runtime, and some interesting challenges encountered during its development.
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Fun with Kermit and ZMODEM over SSH
Fun with Kermit and ZMODEM file transfers over SSH using Qodem
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Leveraging Rust in our Java database
A guide to adding Rust to a Java codebase with JNI and the rust-maven-plugin.
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The mysterious second parameter to the x86 ENTER instruction
For an ABI that probably nobody uses.
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C++ Memory Model: Migrating from x86 to ARM (2021)
Explore the C++ memory model and learn about migrating from x86 to ARM architectures. Enhance your understanding of memory management in C++.
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I built a special PCIe card to test GPUs on the Pi
I partnered up with Mirek (of Mirkotronics / @Mirko_DIY on Twitter) to build the Pi4GPU (or 'PiG' for short): This journey started almost three years ago: almost immediately after the Raspberry Pi Compute Module 4 was launched, I started testing graphics cards on it. First I tried some low-spec cards like the Zotac…