The latest blog posts to take off on Hacker News. 4,389 posts.
JDK 17 has been out for a few months and it’s not just packed with new language features. The performance boost compared to older JDK versions is also really significant. It becomes especially clear when compared to the previous LTS releases, JDK 8 and JDK 11. Much of the improved performance comes from new features…
Introducing QOI — the Quite OK Image Format . It losslessly compresses RGB and RGBA images to a similar size of PNG, while offering a 20x-50x speedup in compression and 3x-4x speedup in decompression. All single-threaded, no SIMD. It's also stupidly simple .
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
In 2017, I went to Facebook on a sabbatical from my faculty position at Yale. I created a team to build a storage system called Delos at the bottom of the Facebook stack (think of it as Facebook’s version of Chubby). We hit production with a 3-person team in less than a year; and subsequently scaled the team to 30+…
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How I got nerd sniped into benchmarking legacy x86 instructions
A year ago I wrote a post comparing .NET 5 performance with its predecessor on Fusion performance tests, and honestly, I was quite…
I’d recently bought a new XPS13 7390 (non 2-in-1) laptop. I had bought the 8GB variant, how hard could it be to upgrade?
This is a followup to my previous post, prefix sum on Vulkan. Last year, I got a fancy algorithm for this problem running well on one device. This time, I will dive into the question of how to make it work well across a wide range of devices. The short answer is, it can be made to work pretty portably on Vulkan and…
Introduction
The design of Datalevin's compact Clojure search engine, its T-Wand algorithm, and the full-text search benchmarks comparing it with Apache Lucene.
I wrote this document after receiving large amounts of email from people who would like to write an emulator of one or another computer but do not know where to start. Any opinions and advices contained in the following text are mine alone and should not be taken for an absolute truth. The document mainly covers…
How this memory leak probably occurs, which apps it affects, and what you can do to avoid it completely.
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
I worked on Rust part-time for several years at Mozilla. During that period I regularly summarized how the compiler’s performance had improved. For example: 2017-11-12 to 2019-07-24.
If you're on a version of Windows 11 that is build 22000 or greater, you can ...
I had thought that SABRE, a joint development of IBM and American Airlines, was the first computerized airline reservation system, going live in 1960. However, “The Univac Air […]
The P cores in the M1 Pro/Max CPU are managed in two groups of four, sparing load on the second group, and distributing it unevenly within each group. Its two E cores outperform the four in the M1 …
Zeroing out a CPU register seems like the simplest and most basic operation imaginable, but in fact x86 CPUs contain a surprising amount of special logic to make this operation run smoothly. The mo…
How X Window Managers Work, And How To Write One (Part I)
Published: 28-01-2021 | Author: Remy van Elst | Text only version of this article
How does a terminal emulator work? What are ANSI escape codes? Understanding terminal internals for development, fun and mischief.
Introduction
I learn a non-trivial number of things, because there’s Debian drama about them. The fact that the which command is not part of any standard just joined the flock.
Can a Kubernetes Pod be created with plain Docker commands? Learn the difference between Containers and Pods by exploring how they are implemented under the hood.
