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The most popular blog posts about systems & performance on Hacker News. 6,944 posts.
Let’s talk about the stream. The SoundCloud stream represents stuff that’s relevant to you primarily via your social graph, arranged in time order, newest-first. The atom of that data model, an event, is a simple enough thing. Timestamp User who did the thing Identifier of the thing that was done For example, At…
This guide covers almost everything you wanted to know about Linux system administration but were afraid to ask about.
I occasionally do talks about curl. In these talks I often include a few slides that say something abut curl's coverage and presence on different platforms. Mostly to boast of course, but also to help explain to the audience how curl has manged to reach its ten billion installations. This is current incarnation of…
How to Build Truly Portable eBPF Programs
My inspiration for this article was this thread in r/embedded . There are still many myths and misconception when it comes to the simple questions "Which compiler should I use?" or "Which compiler is the best?". I will try to share my practical experience with GCC, Clang and IAR on Cortex-M ( and Cortex-M only ). This…
I was incredibly inspired by Tomasz Stachowiak’s hack of GCN . It made me wish I owned a GCN machine of my own to start trying insane things with. On the other hand, I dooo own an Intel Haswell GPU , and they dooo publish some really dense documentation that’s allegedly enough to write a complete driver with.
In 1979, Intel introduced the 8088 microprocessor, a variant of the 16-bit 8086 processor. IBM's decision to use the 8088 processor in the I...
Root election, port roles, proposals and agreements, topology changes: explore RSTP through simulations powered by MSTPD compiled to WebAssembly.
This post is the first in a three-part series about my recent work on Cranelift as part of my day job at Mozilla. In this first post, I will set some context and describe the instruction selection problem. In particular, I'll talk about a revamp to the instruction selector and backend framework in general that we've…
In an earlier post, I showed how to implement the “world’s simplest lock-free hash table” in C++. It was so simple that you couldn’t even delete entries or …
Almost every week I accidentally get into this logging argument. Here’s the problem: people tend to log different things and call it a best-practice. And I a...
This article will try to convince you that adding some limitations on legal Unix/Linux/POSIX filenames would be an improvement. Many programs already presume these limitations, the POSIX standard already permits such limitations, and many Unix/Linux filesystems already embed such limitations so it'd be better to make…
Garbage collectors are expected to be invisible: if programmers (or even users) notice them, something is wrong. Usually, such problems are are performance problems, but there could be correctness issues as well. This makes implementing them a bit scary.
The default filesystem will be BTRFS for Fedora 33 and onwards. Read more here about what that means for the Fedora community.
Since the launch of Chrome in 2008, speed has been one of the 4 core principles that shape the work we do to deliver a highly performant br...
Yes, this is a problem of weak static typing of pure C. Pure C is a great tool for some jobs, but here be dragons , as they say.
Whenever I see code that asks what the native byte order is, it's almost certain the code is either wrong or misguided. And if the native b...
I’ve done a lot of tweeting about systemd lately. My internal conscience constantly reminds me of John Allspaw saying that twitter is just pretty much perfect for snarky comments (paraphrase).
Kubernetes was not originally intended for stateful applications. Kubernetes StatefulSets are Kubernetes' answer to storage-centric workloads.
Backpressure is something nearly every software engineer will have to deal with at some point, and for some it’s a frequent problem. But…
I have recently published a blog post that, as I had expected (actually, hoped for, as that would attract people to contribute to the “study”), generated quite some polemic on the Internet!
foobartel Ltd. - Web Design & Development
A metaphor involving parking meters. Over the years, parking meters in town have evolved into a cumbersome, awkward system. Coins are heavy and you need to have them handy, meters need to be reinfo…
