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Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 6,944 posts.
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Node.js needs a virtual file system
Node.js now has a virtual filesystem. Learn why VFS matters for testing, sandboxing, Single Executable Apps, and running generated code directly in me
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Serenity OS: Interview
How would you build an operating system? My answer is I wouldn't. First off, I don't know how. And the second thing is it seems like to large of a task. It took thousands of developers to build Windows XP. But actually, it is possible to build an operating system from scratch. My guest is doing it. Andreas Kling…
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tolower() with AVX-512
A couple of years ago I wrote about tolower() in bulk at speed using SWAR tricks . A couple of days ago I was interested by Olivier Giniaux’s article about unsafe read beyond of death , an optimization for handling small strings with SIMD instructions, for a fast hash function written in Rust.
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Making EC2 boot time faster
It's possible to cut EC2 boot time from 40 seconds to 5 seconds by combining several optimizations like root volume streaming, instance warm pools, and instance resizing.
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Reliable 25 Gigabit Ethernet via Thunderbolt
I found this tiny fanless Thunderbolt 25G Ethernet adapter. With a little tinkering, it actually works.
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XXH3 – a new speed-optimized hash algorithm
xxh3 XXH3 - a new speed-optimized hash algorithm The xxHash family of hash functions has proven more successful than ...
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You Got Your Web Browser in my Compiler
I recently discovered that Microsoft’s VC++ compiler loads mshtml.dll – also known as Internet Explorer. The compiler does this whenever the /analyze option (requesting static code analysis) is use…
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Parallel Sequential Scan is Committed to PostgreSQL 9.6
I previously suggested that we might be able to get parallel sequential scan committed to PostgreSQL 9.5. That did not happen. However, I...
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Making CRDTs More Efficient
State-based CRDTs grow monotonically, but that doesn't mean they can't be efficient. We'll learn how to compress the pixel editor state by 98%.
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30 Years of ReactOS
ReactOS is a free, opensource reimplementation of windows
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Google opens Falcon, a reliable low-latency hardware transport, to the ecosystem
Falcon enables an order-of-magnitude improvement over software-only transports. Today at the OCP Global Summit, Google is excited to open Falcon to the ecosystem through the Open Compute Project.
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Why the EAX register of x86 is called that
Usually, x86 tutorials don’t spend much time explaining the historical perspective of design and naming decisions. When learning x86 assembly, you’re usually told something along the lines: Here’s EAX . It’s a register. Use it.
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Xfce 4.12 released
Today, after 2 years and 10 months of work, we are pleased to announce the release of the Xfce desktop 4.12, a new stable version that supersedes Xfce 4.10.
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It's the memory latency, stupid
When your database CPU is at 100%, what is it actually doing? Memory stalls, CPU caches, and how radix partitioning makes GROUP BY faster.
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Those Win9x Crashes on Fast Machines
It is well known that Win9x variants prior to Windows 98 have a tendency to crash on fast CPUs. The definition of “fast” is of course fuzzy but the problems were known to occur on AMD K6-2 processors running at 350 MHz or faster as early as 1998. This led to some acrimony when Microsoft attempted to charge $35 for the…
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The dangers of streaming across versions of glibc: A cautionary tale (2014)
The following is a real critical problem that we ran into here at TripAdvisor, but have yet figured out a clear way to mitigate.
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The Billion Row Challenge (1BRC) – Step-by-Step from 71s to 1.7s
A step-by-step walkthrough of the Billion Row Challenge, taking a Parallel Java Streams aggregation from 71 seconds down to 1.7 with SIMD and tuning.
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How I Found a 20-Year-Old Linux Kernel Bug
Robert O'Callahan. Christian. Kiwi. Software guy. All content human-authored unless otherwise noted.
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Syslog: Complete System Administrator Guide
Complete Guide on understanding the Syslog protocol, syslog message format as well as log forwarding. Best practices included!
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My Fanless OpenBSD Desktop
After the disappointment of my X1 Nano and learning that all future Intel "Evo"-branded laptops would lack S3 suspend, I started thinking about returning to my M1 MacBook full-time or building an OpenBSD desktop. I chose the latter, building my first desktop machine in many years.
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The Forgetful CPU (Linux on M4)
This blog post goes into quite some detail about how I first booted Linux on my M4 Mac mini. I encourage you to look up terms and concepts you don’t know, since I cannot explain all the background in this post ;)
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FreeBSD 14.0-Release
The FreeBSD Release Engineering Team is pleased to announce the availability of FreeBSD 14.0-RELEASE. This is the first release from the stable/14 branch.