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Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 6,943 posts.
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Making the obvious code fast (2016)
Jonathan Blow of “The Witness” fame likes to talk about just typing the obvious code first. Usually it will turnout to be fast enough. If it doesn’t, you c...
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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
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On ELF, Part 2 (2018)
Kestrel : A completely open computer design.
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What scientists must know about hardware to write fast code (2020)
Socolive là địa chỉ được nhiều người hâm mộ bóng đá tìm đến khi muốn cập nhật và theo dõi trực tiếp bóng đá trên nền tảng trực tuyến. Nội dung tại Socolive được xây dựng xoay quanh nhiều giải đấu và cuộc đối đầu đáng chú ý, giúp người xem dễ dàng tìm thấy trận đấu đang được quan tâm. Cách phân loại thông tin theo từng…
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A minimal kernel in Swift, running in QEMU
Update (28th of September 2026) Max Desiatov told me that the @c swift attribute should work, instead of declaring the functions using @_cdecl. The @c attribute marks a global function as a C function implemented in Swift, which formalizes the @_cdecl attribute. A link to the proposal is available here. I did update…
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Writing Your First Kernel Module (2019)
Kernel modules are code components that can be loaded and unloaded by the kernel when required. They are used to extend the functionality…
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Nuts and Bolts of Multithreaded Programming (2011)
Access technologies that use data for modern code, machine learning, big data, analytics, networking, storage, servers, cloud, and more.
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FreeBSD 8.2 released
The FreeBSD Release Engineering Team is pleased to announce the availability of FreeBSD 8.2-RELEASE. This is the third release from the 8-STABLE branch which improves on the functionality of FreeBSD 8.1 and introduces some new features. Some of the highlights:
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Tiny Docker Operating Systems
Docker is a founding member of the Blueprint Alliance, a 12-company reference architecture for securing AI agents, built around four governance questions.
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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.
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Whither Plan 9? History and motivation
Wherein the author discusses the Plan 9 operating system. First of several.
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A Faster Lexer in Go
It's been a while since I've last rewritten my favorite lexical analyzer :-) That post is the last in a series implementing a lexer for the TableGen language in a variety of programming languages, using multiple techniques. The last lexer written, in Go, was very fast indeed - processing 1 MiB of source in about 20…
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Flawed routers flood University of Wisconsin internet time server (2003)
ABSTRACT In May 2003, the University of Wisconsin - Madison found that it was the recipient of a continuous large scale flood of inbound Internet traffic destined for one of the campus' public Network Time Protocol (NTP) servers. The flood traffic rate was hundreds-of-thousands of packets-per-second, and hundreds of…
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On HTTP Load Testing
A lot of people seem to be talking about and performing load tests on HTTP servers, perhaps because there’s a lot more choice of servers these days.
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Unikernel Profiling from dom0
Unikernel Profiling: Flame Graphs from dom0. This post investigates performance profiling of Unikernels, and with a proof of concept shows that with a little work a lot of observability is possible.
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How did MS-DOS decide on two seconds to keep the floppy disk cache valid?
A stopwatch and a race against time.
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Formal Methods in Building Robust Distributed Systems
We all know that when designing and operating applications at scale, it is persistent state management that brings the most difficult challenges. Delivering state-free applications has always been (fairly) easy. But most interesting commercial and consumer applications need to manage persistent state. Advertising…
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Xdpcap: XDP Packet Capture
Our servers manage heaps of network packets, from legit traffic to big DDoS attacks. For top efficiency, we adopted eXpress Data Path (XDP), a Linux kernel tool for swift, low-level packet handling.
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Windows 3.x VDDVGA
While working on my Windows 3.x display driver , I ran into a vexing problem. In Windows 3.1 running in Enhanced 386 mode, I could start a DOS session and switch it to a window. But an attempt to set a mode in the DOS window (e.g. MODE CO80 ) would destroy the Windows desktop, preventing further drawing from happening…