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Writing an OS in Rust: Async/Await
In this post, we explore cooperative multitasking and the async/await feature of Rust. We take a detailed look at how async/await works in Rust, inclu…
Most cited
Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 120 posts.
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Using Rust to Scale Elixir for 11M Concurrent Users (2019)
Discover the latest news and app updates, stories, company insights, and plenty more about Discord, all in one place.
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An Introduction to Lock-Free Programming (2012)
Lock-free programming is a challenge, not just because of the complexity of the task itself, but because of how difficult it can be to penetrate the subject in the first place. I …
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Jepsen: PostgreSQL 12.3
PostgreSQL is a major open-source relational database with a 23-year history and a broad range of features. While Jepsen’s work has traditionally focused on distributed systems, our tooling is readily applicable to traditional, single-node databases. In this report, we present the results of applying Jepsen’s…
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Make LLVM Fast Again
Clang is an “LLVM native” C/C++/Objective-C compiler, which aims to deliver amazingly fast compiles […]
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Async Python is not faster
Async Python is slower than "sync" Python under a realistic benchmark. A bigger worry is that async frameworks go a bit wobbly under load.
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Linux is Most Used OS in Microsoft Azure – over 50 percent of VM cores
For the last few years, Microsoft has stated during event keynotes and in other places that Linux is a rapidly growing operating system (OS) being used within Microsoft Azure. They had proudly stat…
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Psychic Paper: iOS Sandbox Escape
Siguza’s Blog
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How io_uring and eBPF Will Revolutionize Programming in Linux
ScyllaDB’s Glauber Costa explains how two new APIs, io_uring and eBPF, are changing the fundamental nature of Linux programming.
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On WD Red NAS Drives
On WD Red NAS Drives - Data - Western Digital (WD) Corporate Blog
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Windows Package Manager Preview
We are thrilled to announce the Windows Package Manager preview! If you’re already familiar with what a package manager is, feel free to skip this
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MacOS Catalina: Slow by Design?
In episode 379 of ATP both Marco Arment and John Siracusa described noticeable delays and stalls after upgrading to macOS 10.15.
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Speeding up Linux disk encryption
Encrypting data at rest is vital for Cloudflare with more than 200 data centres across the world. In this post, we will investigate the performance of disk encryption on Linux and explain how we made it at least two times faster for ourselves and our customers!
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We chose Java for our high-frequency trading application
In the world of High-Frequency Trading, automated applications process hundreds of millions of market signals every day and send back…
50
Those Win9x Crashes on Fast Machines
It is well known that Win9x variants prior to Windows 98 have a tendency to crash on fast CPUs. The definition of “fast” is of course fuzzy but the problems were known to occur on AMD K6-2 processors running at 350 MHz or faster as early as 1998. This led to some acrimony when Microsoft attempted to charge $35 for the…
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Now using Zstandard instead of xz for package compression
As announced on the mailing list , on Friday, Dec 27 2019, our package compression scheme has changed from xz (.pkg.tar.xz) to zstd (.pkg.tar.zst) .
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Against Essential and Accidental Complexity
In the classic 1986 essay, No Silver Bullet , Fred Brooks argued that there is, in some sense, not that much that can be done to improve programmer productivity. His line of reasoning is that programming tasks contain a core of essential/conceptual 1 complexity that's fundamentally not amenable to attack by any…
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When Bloom filters don't bloom
Last month finally I had an opportunity to use Bloom filters. I became fascinated with the promise of this data structure, but I quickly realized it had some drawbacks. This blog post is the tale of my brief love affair with Bloom filters.
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Jepsen: Etcd 3.4.3
The etcd key-value store is a distributed system intended for use as a coordination primitive. Like Zookeeper and Consul , etcd stores a small volume of infrequently-updated state ( by default, up to 8 GB ) in a key-value map, and offers strict-serializable reads, writes and micro-transactions across the entire…
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Mastering systemd: Securing and sandboxing applications and services
This series of articles will explore some of my favorite Red Hat Enterprise Linux (RHEL) 8 capabilities that are enabled by systemd. Thus, this series assume...
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Libinput's bus factor is 1 (2019)
A few weeks back, I was at XDC and gave a talk about various current and past input stack developments (well, a subset thereof anyway). On...
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Speculation in JavaScriptCore
This post is all about speculative compilation, or just speculation for short, in the context of the JavaScriptCore virtual machine.
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IPv4, IPv6, and a sudden change in attitude
A few years ago I wrote [_The World in Which IPv6 was a Good Design_](https://apenwarr.ca/log/20170810). I'm still proud of that article, bu...
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AVX-512 Mask Registers, Again
Taking a second look at the newly introduced mask registers, this time with the benefit of a SKX die shot from Fritzchens Fritz.