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How I cut GTA Online loading times by 70%
GTA Online. Infamous for its slow loading times. Having picked up the game again to finish some of the newer heists I was shocked (/s) to discover that it still loads just as slow as the day it was re
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Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 358 posts.
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GNOME has no thumbnails in the file picker and my toilets are blocked
GNOME filepicker and my toilets are broken because of culture of mediocrity.
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Architecture.md
If you maintain an open-source project in the range of 10k-200k lines of code, I strongly encourage you to add an ARCHITECTURE document next to README and CONTRIBUTING. Before going into the details of why and how, I want to emphasize that this is not another docs are good, write more docs advice. I am pretty sloppy…
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QOI: Lossless Image Compression in O(n) Time
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 .
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Extreme HTTP Performance Tuning
This post will walk you through the performance tuning steps that I took to serve 1.2 million JSON 'API' requests per second from a 4 vCPU AWS EC2 instance.
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Your CPU may have slowed down on Wednesday
The death of hardware store optimization.
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This Blog is now hosted on a GPS/LTE modem
Ethical Hacking and Cybersecurity Blog
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I switched from macOS to Linux after 15 years of Apple
After using Macs for fifteen years, I switched to Linux as my main operating system and I’m enjoying it. Here’s an introduction to Linux that may help you too.
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The Unix Magic Poster
I understand the classic UNIX Magic poster by Gary Overacre was distributed at past USENIX conferences, and I’ve known of it for years but now in confinement, I’ve decided I want one to hang in my ...
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Microsoft no longer signs Windows drivers for Process Hacker
[German]Brief information, which is already here with me since August 2021, but which I have not yet addressed in the blog. David Xanatos has pointed out to me that Microsoft is refusing to sign…
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Write libraries instead of services, where possible
For any developer with limited resources, this means a library (where viable) can provide the same functionality to the user, at a lower cost to the developer than a service.
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Speed of Rust vs. C
The run-time speed and memory usage of programs written in Rust should about the same as of programs written in C, but overall programming style of these languages is different enough that it's hard to generalize their speed. This is a summary of where they're the same, where C is faster, and where Rust is faster.
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A single line of code made a 24-core server slower than a laptop
Imagine you wrote a program for a pleasingly parallel problem, where each thread does its own independent piece of work, and the threads don’t need to coordi...
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Parsing Protobuf at 2+GB/S: How I Learned to Love Tail Calls in C
[Note: there have been several developments in this space since thisarticle was published. See A Tail Calling Interpreter For Python (And Other Updates) for...
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Dissecting the Apple M1 GPU, Part II
Less than a month ago, I began investigating the Apple M1 GPU in hopes of developing a free and open-source driver. This week, I’ve reached a second milestone: drawing a triangle with my own open-source code. The vertex and fragment shaders are handwritten in machine code, and I interface with the hardware via the…
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Inserting a billion rows in SQLite under a minute
This is a chronicle of my experiment where I set out to insert 1B rows in SQLite
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Speed Is the Killer Feature
Teams consistently overlook speed. Instead, they add more features (which ironically make things slower). Products bloat over time and performance goes downhill.
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Surprisingly Slow
I have an affinity for performance optimization and making software as efficient as possible. Over the years, I've encountered specific instances and common patterns that make software or computers slow. In this post, I'll shine a spotlight on some of them.
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Dissecting the Apple M1 GPU, part I
Apple’s latest line of Macs includes their in-house “M1” system-on-chip, featuring a custom GPU. This poses a problem for those of us in the Asahi Linux project who wish to run Linux on our devices, as this custom Apple GPU has neither public documentation nor open source drivers. Some speculate it might descend from…
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Things I learned from building a production database
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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SQLite the only database you will ever need in most cases
The name SQLite is a nice name, but the "lite" part is misleading, it sounds like it is only useful for tiny things - which is very wrong. SQLite should be named AwesomeSQL, because that is what it is. SQLite is probably the only database you will ever need in most cases.
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How does apt render its fancy progress bar?
Python Developer and Trainer