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The most popular blog posts about systems & performance on Hacker News. 533 posts.
In November 2018 AWS published an Open Source tool called Firecracker , mostly a virtual machine monitor relying on KVM , a small sized Linux kernel, and a stripped down version of Qemu . What baffled me was the speed at which the virtual machine would fire up and run the service. The whole process is to be compared…
Design principles for writing software meant to survive decades of changing requirements and technology.
Julia 1.5 is gaining a cool new bug reporting capability, leveraging mozilla's rr project to automatically create fully-reproducible bug reports
T The problem Every once in a while I get involuntarily dragged into heat...
I was a huge Archimedes fan and still have an A310, an A5000, a RiscPC and a RasPi running RISC OS. But no, I have to disagree. RISC OS was a hastily-done rescue effort after Acorn PARC failed to make ARX work well enough. I helped to arrange this talk by the project lead a few years ago. RISC OS…
Let me tell you about the still-not-defunct real-time log processing pipeline we built at my now-defunct last job. It handled logs from a la...
By Aditya Mavlankar, Jan de Cock, Cyril Concolato, Kyle Swanson, Anush Moorthy and Anne Aaron
The story of debugging a mysterious Julia segfault.
I spent last week-end getting accustomed to CUDA and SIMT programming. It was a prolific time ending up with a Business Card Raytracer running close to 700x faster [1] , from 101s to 150ms. This pleasant experience was a good pretext to spend more time on the topic and learn about the evolution of Nvidia architecture…
hi! Yes, it's been a while since I posted here and yes, it's been a while since I was actively working on FreeBSD's wireless stack. Life's...
Although 10.15.3 fixes a serious bug in Mail and Catalina is steadily maturing, there are many users who still shouldn’t upgrade.
How the instruction set for RISC-V processors has been designed cleverly for both simplicity and high performance.
Posted by James Forshaw, Project ZeroThe Chromium sandbox on Windows has stood the test of time. ...
In 2017, we launched Amazon MQ – a managed message broker service for Apache ActiveMQ, a popular open-source message broker that is fast and feature-rich. It offers queues and topics, durable and non-durable subscriptions, push-based and poll-based messaging, and filtering. With Amazon MQ, we have enhanced lots of new…
Update 2025-03-05 : @jxu has shared a collection of simplified examples that are even easier to follow than the original ones in this post.
Durability is the guarantee that data can be accessed after a failure. It seems like this should be very simple: either your system provides durable data storage, or it does not. However, durability is not a binary yes/no property, and instead should be defined as the kinds of failures you want your data to survive…
Documentation and guides from the team at Fly.io.
Over the past four years, we've been working hard on rebuilding our desktop client's sync engine from scratch. The sync engine is the magic behind the Dropbox folder on your desktop computer, and it's one of the oldest and most important pieces of code at Dropbox. We're proud to announce today that we've shipped this…
Trying to figure out how KVM-based virtual machine hosts work by implementing one from scratch.
Achieving 100 Gbps intrusion prevention on a single server, Zhao et al., OSDI’20 Papers-we-love is hosting a mini-event this Wednesday (18th) where I’ll be leading a panel discussion including one …
Recently, I had an opportunity to build a WireGuard jail on a FreeBSD 12.1 host. As it was really quick and easy to setup and it has been working completely fine for a month, I’d like to share my experience with anyone interested in this topic. I would like to use WireGuard app on my Android phone to access my home…
Text-to-speech systems across the industry typically rely on GPUs or specialized hardware to generate state-of-the-art speech in real-time production. We solved core efficiency challenges to process one second of audio in 500 milliseconds — using only CPUs.
It's late 2020 and you just got a brand-new Mac with Apple's own ARM processors. Exciting! But what will development be like?
Regular expressions – commonly known as RegExps – are a powerful and heavily used tool for manipulating strings in JavaScript. This post describes how we updated the RegExp engine in ...
The microservices honeymoon period is over. Uber is refactoring thousands of microservices into a more manageable solution [1]; Kelsey Hightower is predicting monoliths are the future [2]; and even Sam Newman is declaring that microservices should never be the default choice, but rather a last resort [3]. What’s going…
ReactOS is a free, opensource reimplementation of windows
