Topics /
The most popular blog posts about systems & performance on Hacker News. 6,942 posts.
SIMD in game development Often in game development we talk about SIMD. It is the holy grail of CPU performance, often out of reach. The conventional wisdom is that it is difficult to achieve real gains from SIMD. It is tempting to build a math library around SIMD hoping to get some performance gains. However, it often…
A solution to the problem of the growing number of mount points and loopback devices in (Ubuntu) Linux.
gitfs went on a trip around the world, and we were there to document it: fro Italy to Sweden, from the UK to Spain, gitfs has been center stage.
Wayland is all the rage those days. Distributions left and right switch to it, many readers of my previous article on writing a X11 GUI from scratch in x86_64 assembly asked for a follow-up article about Wayland, and I now run Wayland on my desktop. So here we go, let's write a (very simple) GUI program with Wayland…
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
As I continue reading An Introduction to Parallel Programming, I cannot help but notice a connection between communication among processors, communication among human beings, and communication within the individual self....
As a resident member of the EEVblog Test Equipment Anonymous support group, I have picked up my fair share of old test equipment boat anchors, but my knees buckle at broken recently manufactured oscilloscopes in the sub $200 range. In this case, the Agilent / Keysight Infiniivision X-series oscilloscopes have been an…
Find software and development products, explore tools and technologies, connect with other developers and more. Sign up to manage your products.
Clarifying the shebang (#!) mechanism: A step-by-step look using strace and kernel code shows how Linux handles script execution directly, revealing the shell isn't involved initially.
Okay, promises, promises. Here's the first of my bucket list projects I'm completing which I've intermittently worked on for literally two d...
When considering the panel to discuss concurrency, you’d be pushed to find a higher calibre than Sir Tony Hoare, Joe Armstrong, and Carl Hewitt.
I recently released papaya, a fast and feature-complete concurrent hash table for Rust. In this post I want to dive into the design and research that went into creating it, as well as why you might consider using it over existing solutions.
A blog about software craft and quality
A number of 70s computing systems had nine-bit bytes, most prominently the PDP-10, but today 1 [ 1 Apparently, it was the System/360 that really set the standard here. ] all systems use 8-bit bytes and that now seems natural. 2 [ 2 Though you still see RFCs use "octet", and the C standard has a CHAR_BITS macro, to…
Complexity in software, whether it’s a programming languages, an API, or a user interface, is generally regarded as a vice. And yet complexity is exceptionally common, even though no one ever sets out to build something complex. For people interested in building easy to use software, understanding the causes of…
Purism makes premium phones, laptops, mini PCs and servers running free software on PureOS. Purism products respect people's privacy and freedom while protecting their security.
This vulnerability allows a physically-present attacker to control the full disk encryption unlock process and gain complete access to decrypted content in some cases where a TPM, dracut and Clevis are used.
A glance at this year's OSDI program shows that Operating Systems are a small niche topic for this conference, not even meriting their own full session. This is unfortunate because good OS design has always been driven by the underlying hardware, and right now that hardware is almost unrecognizable from ten years ago…
Last week, Microsoft issued January’s cumulative security fixes for January 2018. Although the media focus has been around “Meltdown” and…
Have you ever wondered how well PostgreSQL performs on a Raspberry Pi 3B ? Oh. You haven't? Oh well, I asked myself that question and put it to the test. This post covers how I used pgbench to answer this question and the results of what I found.
Suppose you’re connected to a remote host with SSH and after a while the SSH session goes stale. The terminal is unresponsive and no keypress seem to take effect. There might be something with the network, the remote host is restarting or maybe your machine has been in hibernation, there could be multiple reasons for…
Discover Azure Kubernetes Service (AKS) for secure, scalable containerized app deployment and management with fast delivery on managed Kubernetes clusters.
Macintosh Application Environment for Unix -- from back in 1994.
The URL you requested is no longer available. Please contact the site owner directly if you need to access their files. They are responsible for migrating their content to another site.
In 2007 I wrote about using PNGout to produce amazingly small PNG images. I still refer to this topic frequently, as seven years later, the average PNG I encounter on the Internet is very unlikely to be optimized. For example, consider this recent Perry Bible Fellowship cartoon. Saved directly from
