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Terminal Latency on Windows (2024)
UPDATE 2024-04-15: Windows Terminal 1.19 contains a fix that reduces latency by half! It’s now competitive with WSLtty on my machine. Details in the GitHub Issue.
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 543 posts.
482
Airbus A320 Fly by wire corrupted by radiation in flight
Aviation insiders say an airworthiness directive may soon require software updates across the Airbus A320 fleet after investigators linked a JetBlue incident—where the aircraft entered a sudden uncommanded descent—to a faulty ELAC computer. Any grounding is expected to be short and staggered, with airlines updating…
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The real failure rate of EBS
Our experience running AWS EBS at scale for critical workloads
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Disk Utility still can't check and repair APFS volumes and containers (2021)
Don’t waste time trying to discover which files are still open when you want to check or repair an APFS disk and Disk Utility throws an error. Here’s the solution.
486
Multi-Core by Default
On multi-core programming, not as a special-case technique, but as a new dimension in all code.
487
Rust: Investigating an Out of Memory Error
TL;DR: We discovered the hard way that when backtrace is enabled, the anyhow library is capturing a backtrace on every error. Only when printing this error in debug format!(”err: {:?}”, error) backtrace’s symbols are resolved to human-friendly names, thus leading to a significant memory increase for your application…
488
Igniting the GPU: From Kernel Plumbing to 3D Rendering on RISC-V
How I enabled the PowerVR GPU on the TH1520 SoC by writing the missing kernel drivers.
489
Fuzix on a Raspberry Pi Pico
Because your $5 microcontroller needed to run UNIX
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How does lossless compression in Fuji RAF files work? (2020)
I spent 3 weeks earlier this year digging in to and reimplementing the lossless compression algorithm in Fuji’s RAF Camera RAW files. This post discusses the fundamentals of how it works.
492
Reassessing Wayland
So a bit under 3 years ago, I made my infamous Wayland rant post that is likely the most read post on this blog by miles. I should really actually write about music again one of these days, but that's a topic for another time. The language was perhaps a bit inflammatory, but I felt the criticisms I made at the time…
493
How fast is Go? Simulating particles on a smart TV
The challenge, simulate millions of particles in golang, multi-player enabled, cpu only, smart tv compatible.
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Vm.overcommit_memory=2 is the right setting for servers
The Linux kernel has a feature where you can tune the behavior of memory allocations: the vm.overcommit_memory sysctl. When overcommit is enabled (sadly, this is the default), the kernel will typically return a mapping when brk(2) or mmap(2) is called to increase a program’s heap size, regardless of whether or not…
495
How often does Python allocate?
The answer is "very often"
496
A critical look at NetBSD’s installer
[New to Gemini? Have a look at my Gemini FAQ.] This article was bi-posted to Gemini and the Web; Gemini version is here: gemini://gemini.circumlunar.space/users/kraileth/neunix/2025/installing_bsd_…
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Selective async commits in PostgreSQL – balancing durability and performance
Safely leverage PostgreSQL's asynchronous commit for significant performance gains
498
Meta-analysis of three different notions of software complexity
Discussion on notions of software complexity as defined by Rich Hickey, John Ousterhout and Zach Tellman.
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DWARF as a Shared Reverse Engineering Format
Create DWARF debug information with the LIEF Extended DWARF editor and share reverse-engineered types and functions between Binary Ninja and Ghidra plugins.
500
An argument for increasing TCP's initial congestion window (2024)
Introduction Google has a long history of performing networking research, making changes, and pushing those changes to the entire internet. In 2011, they published one of my favorite papers, which described their decision to increase the TCP initial congestion window from 1 to 10 on their entire infrastructure. This…
501
Using Sun Ray thin clients in 2025
setting up 20 year old hardware is bound to work first try, right? ... right?
502
I solved a distributed queue problem after 15 years
Learn how queues make horizontal scaling, scheduling, and flow control easier in cloud systems, and how to make them durable and observable.
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Why Does My eBPF Program Work on One Kernel but Fail on Another?
How to Build Truly Portable eBPF Programs
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Installing UEFI Firmware on ARM SBCs
I'm going to neuralyze the SPI flash and install some Kelvin Timeline firmware that will allow me to boot and install generic ARM Linux images on a ROCK 5 ITX+.
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Today I Learned: Binfmt_misc
Technical blog by Stephan Berger (@malmoeb)
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Clang Static Analyzer and the Z3 constraint solver (2022)
Notes on using the Z3 constraint solver with the Clang Static Analyzer
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Deterministic simulation testing for async Rust
How S2 uses deterministic simulation testing for async Rust to find distributed-systems bugs before they reach production.
510
Systemd has been a complete, utter, unmitigated success
Eleven init systems enter, one init system leaves.