Every blog post that took off on Hacker News, ranked by the votes of its best submission. 6,947 posts.
In this post I’m going to do a silly, but interesting, exercise that should never be done in any program that actually matters. I’m going write a program that changes one of its function definitions while it’s actively running and using that function. Unlike last time , this won’t involve shared libraries, but it will…
This report covers FreeBSD related projects for the period between October and December, and is the fourth of four planned reports for 2020.
ReactOS is a free, opensource reimplementation of windows
Today marks a milestone for Red Hat Enterprise Linux with the addition of a new architecture to our list of fully supported platforms. Red Hat Enterprise Linux for ARM is a part of our multi-architecture strategy and the culmination of a multi-year collaboration with the upstream community and our silicon and hardware…
ReactOS is a free, opensource reimplementation of windows
How targeted improvements helped us speed up bulk data loads and complex schemas.
These days the internet as a whole is mostly constructed out of point to point ethernet circuits, meaning an ethernet interface (mostly optical) attached directly from one routing device to another routing device.
We’ve been doing a bunch of work recently on improving the responsiveness of OCaml’s garbage collector. I thought it would be worth discussing these developm...
Unikernels are customized, single address space bootable images composed of an application and the required bare-minimum kernel functionality. Today’s unikernels have demonstrated substantial performance and security advantages over monolithic and microkernels, but none have yet achieved widespread adoption. The…
Many people know, or have heard of, the Motorola 68000 architecture. These processors have been used in many machines: in the first generations of Apple Macintosh computers, in the ever-rivals Amiga and Atari ST home computers, in many workstations built by Sun , HP and NeXT (to name only a few), but also in many…
developer. curious. learner
This post is the fourth part of a three-part series 1 describing work that I have been doing to improve the Cranelift compiler. In this post, I'll describe the work that went into regalloc2 , a new register allocator I developed over the past year. The allocator started as an effort to port IonMonkey's register…
The basics of GPUs, profilers, distributed computation, and kernel optimization
If LZ compression is compilation , what other instructions are useful to add? I've spent the last several years, off and on, trying to figur...
Mosaic: Processing a trillion-edge graph on a single machine Maass et al., EuroSys’17 Unless your graph is bigger than Facebook’s, you can process it on a single machine. With the incep…
This blog post is meant to an iteration on the tutorial and introduction to garbage collection implementation presented in this classic blog post . We are still working with simple garbage collectors, but this time another one with a bit more complexity.
The maintainer of glibc, Ulrich Drepper, wrote an article called "Static Linking Considered Harmful". This is why his post is wrong.
Digital audio processing is a complex yet fascinating subject. Getting a deeper understanding requires knowledge in multiple technical disciplines, including physics, electrical/electronical engineering, and some software engineering when it comes to parts of the Linux ecosystem. This article aims to demystify the…
From the highly eclectic blog of Mark Dominus
Occasionally I’ve needed to key a hash table with C pointers. I don’t care about the contents of the object itself — especially if it might change — just its pointer identity. For example, suppose I’m using null-terminated strings as keys and I know these strings will always be interned in a common table. These…
An exploration of Go's portability limits when integrating with system-specific C libraries like libsystemd and dealing with glibc vs. musl systems.
By far, the worst part of working on beets is dealing with filenames. And since our job is to keep track of your files in the database, we have to deal with them all the time. This post describes the filename problems we discovered in the project’s early days, how we address them now, and some alternatives for the…
The only enterprise AI data platform that cuts complexity, reduces costs, and gets you to production faster.
We discuss how to make sure that your access to TLS (thread-local storage) is fast, and how the presence of constructors and shared libraries affects the access time.
Published: 18-09-2014 | Author: Remy van Elst | Text only version of this article
(this post figured on HNews here) This happened to me in 2020, and it has been on my mind again lately. During the worst of the pandemic, I found a vulnerability in a system that gave me access to the Brazilian federal system, and with that access I was able to retrieve information on any
What Postgres for Everything means to a dev deploying all sorts of databases. Spoiler: it’s about collapsing your stack and keeping it simple.
