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FreeBSD 13.2 on ThinkPad T14 (GEN1)
I used to run FreeBSD on older laptops – some more then a decade old – like my favorite ThinkPad W520 daily driver or ThinkPad X220 mobile companion. Today I will share with you my expe…
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 6,949 posts.
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The Musl Preprocessor Debate
Today, I would like to discuss a project that I care very deeply about: the musl libc. One of the most controversial and long-standing debates in the musl community is that musl does not define a p…
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Inference Optimization for MiMo v2.5: Pushing Hybrid SWA Efficiency to the Limit
An end-to-end engineering practice for the MiMo-V2.5 series inference system, covering KVCache management, tiered caching, SWA-aware prefix cache trees, scheduling, Prefill/Decode pipelines, and multimodal optimizations.
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Go’s runtime C to Go rewrite, by the numbers
The start of September brings a close to the Go 1.4 merge window . From now until the release in December, only bug fixes and tweaks will be accepted.
5826
Conditions in the Intel 8087 floating-point chip's microcode
In the 1980s, if you wanted your computer to do floating-point calculations faster, you could buy the Intel 8087 floating-point coprocessor ...
5827
HTTPS' massive speed advantage
I tweeted this the other day, and the internet was not pleased: > HTTPS is slow. No - wait - is it HTTP that's slow?! https://t.co/T49GG7oCaK pic.twitter.com/cfnYOpXMWc [https://t.co/cfnYOpXMWc] — Troy Hunt (@troyhunt) July 8, 2016 [https://twitter.com/troyhunt/status/751317949349130240] In fact, a
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When code is suspiciously fast: adventures in dead code elimination
Part of a recent assignment for one of my classes involved calculating the Fibonacci sequence both recursively and iteratively and measuring the speed of each method. (BONUS: For a fun diversion, here is a paper I wrote about using the Golden Ratio, which is closely related to the Fibonacci sequence, as a base for a…
5829
Implementing WebGPU in Gecko
As WebGPU specification is approaching a usable shape, we are working on prototype implementations in both Gecko and Servo. If you ever wondered about what i...
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Android emulator abused to introduce malware onto PCs
Attackers have compromised the software distribution system of BigNox, developer of a popular Android emulator for PCs and Macs.
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How removing caching improved mobile performance by 25%
and how we found out.
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Building a 64-bit aarch64 kernel and userspace for the Raspberry Pi 4
I’ve recently been tinkering around with using a Raspberry Pi as a desktop computer. The Pi 4 is fairly powerful; very sufficient for web browsing, audio, video, and terminal use for programming.
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Avoiding Instruction Cache Misses
Excessive instruction cache misses are the kind of a performance problem that's going to appear only in larger codebases. In this article, I'm describing some ideas on how to deal with this issue.
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Bits on the Wire
Exactly 100% of everything on the Internet involves exchanging messages which represent items of interest to humans. These items can be classified into three baskets: One for “media” (images, sound, video), one for text (HTML, PDF, XML), and one for “objects” (chat messages, payments, love poems, order statuses). This…
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Designing Headers for HTTP Compression
One of the concerns that often comes up when someone creates a new HTTP header is how much “bloat” it will add on the network. This is especially relevant in requests, when a little bit of extra data can introduce a lot of latency when repeated on every request.
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The Great DOM Fuzz-Off of 2017
Posted by Ivan Fratric, Project ZeroIntroductionHistorically, DOM engines have been one of the la...
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Quantifying pass-by-value overhead
Owen's personal website and portfolio
5842
Unlocking eBPF power
Spiral journey over kubernetes, cloud and devops world.
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Software sandboxing: The basics (2025)
Diving into the territory of software sandboxing is diving into mostly uncharted territory. The necessary pieces to implement good sandboxing in your software are scattered all-around and the pioneers haven’t yet gathered enough knowledge into an unified mappa mundi that can guide new sailors through some well…
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Nim on a Real-Time Operating System: Apache NuttX RTOS and Ox64 BL808 SBC
Let's blink an LED on Pine64 Ox64 BL808 64-bit RISC-V Single-Board Computer... With Nim Programming Language and Apache NuttX Real-Time Operating System
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Breaking Out of Docker via RunC
Unit 42 brings together world-renowned threat researchers, incident responders and security consultants to create an intelligence-driven, response-ready organization that's passionate about helping you proactively manage cyber risk.
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What happens when a GPU reads memory
Following an LDG.E SASS instruction through the hardware units in an RTX 4090.
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Prometheus metrics saves us from painful kernel debugging (2022)
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…
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Prefix sum on portable compute shaders
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…
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Speeding up a program for a 50 year old processor
In the previous year I wrote a program, running on Intel's first microprocessor - 4004, that computes the first 255 digits of π. So let's continue our journey with the successor - the Intel 4040.