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A 1958 UNIVAC airline reservation system
I had thought that SABRE, a joint development of IBM and American Airlines, was the first computerized airline reservation system, going live in 1960. However, “The Univac Air […]
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 6,943 posts.
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Inspecting coredumps like it's 2021
Consulting & Support for the Nix ecosystem by Mayflower GmbH
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Can we do better than our C compiler?
Today, I wanted to see if I could out-compile my C compiler. I added a hand-compiled assembly version of echo from our previous coding exercise and added a new make target, make asm , that will assemble it. Let's look at our hand-compiled assembly and compare it to our C compiler and ask whether or not it was worth it.
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Fedora 33
Today, I’m excited to share the results of the hard work of thousands of contributors to the Fedora Project: our latest release, Fedora 33, is here! This is a big release with a lot of change, but I believe all that work will also make it a comfortable one, fulfilling our goal of bringing you […]
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Starbucks Does Not Use Two-Phase Commit (2004)
People often criticize asynchronous messaging solutions as too complicated and cumbersome
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Bfs 3.0: The Fastest Find Yet
bfs is a tool I wrote to do b readth- f irst s earch through a filesystem. It started out simply enough, but over the years it’s grown to include almost every feature from every other find implementation I could find, plus many of its own innovations. The new 3.0 release series includes the biggest new feature so far…
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Microservices
Defining the microservices architectural style by describing their nine common characteristics
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Loading NumPy arrays from disk: mmap() vs. Zarr/HDF5
Learn how to load larger-than-memory NumPy arrays from disk using either mmap() (using numpy.memmap), or the very similar Zarr and HDF5 file formats.
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Pause/unpause any X11 application
Many desktop oriented operating systems try to provide various usability improvements and features, like quite useful Expose or Dashboard in Mac OS X or useless Tiles concept in recent editions of …
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A reference counting bug which leads to local privilege escalation in io_uring
Hello, I’m Shiga( @Ga_ryo_ ), a security engineer at Flatt Security Inc.
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Architecture of Nautilus, the new Dropbox search engine
Dash knows your context, your team, and your work, so your team can stay organized, easily find and share knowledge, and keep projects secure, all from one place.
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Why do systems fail? Tandem NonStop system and fault tolerance
Explore Tandem NonStop architecture principles and their relevance to high availability in software systems like Elixir, Gleam, and Erlang.
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Computing at scale, or, how Google has warped my brain
A number of people at Google have stickers on their laptops that read "my other computer is a data center." Having been at Google for almost...
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A Base Filesystem Project for macOS
OK9 là nền tảng giải trí và cá cược trực tuyến với hệ thống sản phẩm đa dạng, bao gồm thể thao, live casino, slot game, bắn cá, xổ số và game bài.
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JVM Anatomy Quark #10: String.intern (2019)
"JVM Anatomy Quarks" is the on-going mini-post series, where every post is describing some elementary piece of knowledge about JVM. The name underlines the fact that the single post cannot be taken in isolation, and most pieces described here are going to readily interact with each other.
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Dissecting the CPU-memory relationship in garbage collection (OpenJDK 26)
The author of Java 26's MemoryMXBean.getTotalGcCpuTime() analyzes the CPU-memory trade-off and why pause times fail to capture explicit GC cost.
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CertiKOS: A breakthrough toward hacker-resistant operating systems
A team of Yale researchers has unveiled CertiKOS, the world’s first operating system that runs on multi-core processors and shields against cyber attacks.
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JVM Garbage Collectors Benchmarks Report
The current article describes a series of Java Virtual Machine (JVM) Garbage Collectors (GC) micro-benchmarks and their results, using a different set of patterns. For the current issue, I included all Garbage Collectors from AdoptOpenJDK 64-Bit Server VM version 13 (build 13+33) :
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A programmer-friendly I/O abstraction over io_uring and kqueue (2022)
Consider this tale of I/O and performance. We’ll start with blocking I/O, explore io_uring and kqueue, and take home an event loop very similar to some software you may find familiar.
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CockroachDB's Consistency Model
CockroachDB's consistency model fits somewhere between serializability and linerarizability. We're proposing a new marketing phrase for CRDB's guarantees: no stale reads.
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How the ARM32 Linux kernel decompresses
ARM traditionally uses compressed kernels. This is done for two major reasons: It saves space on the flash memory or other storage media...
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Linux kernel heap quarantine versus use-after-free exploits
It's 2020. Quarantines are everywhere – and here I'm writing about one, too. But this quarantine is of a different kind. In this article I'll describe the Linux Kernel Heap Quarantine that I developed for mitigating kernel use-after-free exploitation.
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