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Vectorized and performance-portable Quicksort
We're sharing open source code that can sort arrays of numbers about ten times as fast as the C++ std::sort
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 6,943 posts.
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LineageOS 24
You know what's funnier than 24?
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How we made JSON.stringify more than twice as fast
This post explains our recent effort to improve JSON.stringify performance
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Linux containers in a few lines of code
Trying to figure out how Linux containers work by implementing them from scratch in C.
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BSD vs. Linux (2005)
Your browser doesn't seem to support CSS , which this page uses for all styling. Don't be surprised if it looks kinda boring.
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Picking Apart the Crashing iOS String
So there’s yet another iOS text crash, where just looking at a particular string crashes iOS. Basically, if you put this string in any system text …
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John Carmack on Inlined Code
The real enemy addressed by inlining is unexpected dependency and mutation of state, which functional programming solves more directly and completely. However, if you are going to make a lot of state changes, having them all happen inline does have advantages; you should be made constantly aware of the full horror of…
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Win32 Is the Only Stable ABI on Linux?
In the ELF format there are two ways of providing a hash table of symbols. DT_HASH and DT_GNU_HASH . The first one is part of SYSV generic ABI and is well documented and marked as mandatory. DT_GNU_HASH is a newer, smaller, and faster replacement that is not documented , implemented in a few places (Glibc, GNU ld…
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There is no memory safety without thread safety
Memory safety is all the rage these days. But what does the term even mean? That turns out to be harder to nail down than you may think. Typically, people use this term to refer to language...
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Xplain – Explaining X11 for the rest of us
The goal of Explanations is to try to allow people to play with fun parts of computers. Graphics, compression, audio. The tagline is my biggest inspiration: "Play, don't show", riffing off the typical "Show, don't tell" rule of writers and authors everywhere. Why bother giving a diagram when I give you an inspector…
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The $8 Linux Computer
Yes, you read that right... for $8 you can run linux on a RISC-V computer. And not just a stripped down kernel without an MMU. No, t...
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Raspberry Pi 3 Fastboot – Less Than 2 Seconds
This post tells about my journey on fast-booting a Raspberry Pi 3 (RPI). In addition to that, some optimizations are discussed that can be applied to a Qt (QML) application. At the end, we will have a …
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exFAT in the Linux kernel
We’re pleased to announce that Microsoft is supporting the addition of Microsoft’s exFAT technology to the Linux kernel.
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OpenZFS deduplication is good now and you shouldn't use it
OpenZFS 2.3.0 will be released any day now, and it includes the new “Fast Dedup” feature. My team at Klara spent many months in 2023 and 2024 working on it, and we reckon it’s pretty good, a huge step up from the old dedup as well as being a solid base for further improvements. I’ve been watching various forums and…
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A generalised solution to distributed consensus
A generalised solution to distributed consensus Howard & Mortier, arXiv’19 This is a draft paper that Heidi Howard recently shared with the world via Twitter, and here’s the accompanying …
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Million requests per second with Python
Is it possible to hit a million requests per second with Python? Probably not until recently.
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What every programmer should know about SSDs
A blog by and for database architects.
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Apple Silicon Macs can't boot from external drive if internal drive failed
CCC 5.1.27 and CCC 6 can make bootable copies of the system on Intel and Apple Silicon Macs (11.3+) right now, and we'll continue to support that functiona...
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Same-day upstream Linux support for Snapdragon 8 Elite Gen 5
Initial kernel and subsystem support for new Snapdragon 8 Elite Gen 5 posted for review. Learn what’s in the patches and how you can start working with them.
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Files Are Hard
I haven't used a desktop email client in years. None of them could handle the volume of email I get without at least occasionally corrupting my mailbox. Pine, Eudora, and outlook have all corrupted my inbox, forcing me to restore from backup. How is it that desktop mail clients are less reliable than gmail, even…
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DTrace on Windows
Introducing DTrace on Windows 10
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Amazon Braket – Get Started with Quantum Computing
Nearly a decade ago I wrote about the Quantum Compute Cloud on April Fool’s Day. The future has arrived and you now have the opportunity to write quantum algorithms and to run them on actual quantum computers. Here’s what we are announcing today: Amazon Braket – A fully managed service that allows scientists…
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Google Sheets ported its calculation worker from JavaScript to WasmGC
Calculations in Google Sheets were initially done on the server, then on the client in JavaScript, and now on the client in WebAssembly Garbage Collection. This case study explains how and why.