391
Revisiting Linux CPU Scheduling
Disclaimer: This is to the best of my knowledge. It's a complicated topic, there are tons of options, and this only covers a tiny fraction of this topic anyway. If you spot mistakes, please tell me.
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 399 posts.
392
The CAP theorem. The Bad, the Bad, & the Ugly
The CAP theorem is too simplistic and too widely misunderstood to be of much use for characterizing systems.
393
Modular Monoliths Are a Good Idea
Microservices aren't the only way to get high cohesion and low coupling.
394
Pi 5 overclocking: Silicon Lottery
Silicon lottery. Now that the Raspberry Pi 5s been readily available (at least in most regions) for a few months, more people started messing with clocks, trying to get the most speed possible out of their Pi 5s. Unlike the Pi 4, the Pi 5 is typically comfortable at 2.6 or even 2.8 GHz, and some Pi 5s can hit 3.0 GHz…
395
Minimal Linux Bootloader debugging story
I maintain two builds of the Linux kernel, a linux/arm64 build for gokrazy, my Go appliance platform, which started out on the Raspberry Pi, and then a linux/amd64 one for router7, which runs on PCs. The update process for both of these builds is entirely automated, meaning new Linux kernel releases are automatically…
396
C++'s `noexcept` can sometimes help or hurt performance
Over the course of working on PSRayTracing (PSRT), I've been trying to find all sorts of tricks and techniques to squeeze out more performance from this C++ project. Most of it tends to be alternative algorithms, code rewriting, and adjusting data structures. I thought sprinkling the final keyword like an all purpose…
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398
"I Contribute to the Windows Kernel. We Are Slower" (2013)
I was explaining on Hacker News why Windows fell behind Linux in terms of operating system kernel performance and innovation. And out of nowhere an anonymous...
399
Writing down (and searching through) every UUID
I couldn't remember every UUID so I wrote them all down