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OpenMandriva, the first Clang-built Linux distribution
OpenMandriva Lx is a unique and independent distribution and direct descendant of Mandriva Linux
New
The latest blog posts to take off on Hacker News. 498 posts.
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The world in which IPv6 was a good design (2017)
Last November I went to an IETF meeting for the first time. The IETF is an interesting place; it seems to be about 1/3 maintenance grunt wo...
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Jepsen: TiDB 2.1.7
In 2010, Google engineers Daniel Peng & Frank Dabek published Large-scale Incremental Processing Using Distributed Transactions and Notifications , which described Percolator: a Google-internal database for random access transactional workloads where low latencies are not required. Percolator uses a global…
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Performance Speed Limits
A laundry list of speed limits that your code can’t exceed.
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Rethinking the filesystem as global mutable state, the root of all evil
When you invoke a function in an imperative programming language, you pass arguments to that function. But that function may also operate on global mutable state, meaning there are other factors in the operation of that function than merely the arguments you pass to it. To some extent this kind of contextual, implicit…
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Unicode programming, with examples in C
Most programming languages evolved awkwardly during the transition from ASCII to 16-bit UCS-2 to full Unicode. They contain internationalization features that often aren’t portable or don’t suffice.
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Malloc Never Fails (2012)
Here’s a fun bit of trivia: malloc on Linux never fails [due to the obvious cause]. In this post, we’ll show that this indeed is the case, and explore why…
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Emulator basics: a stack and register machine
Writing an x86 emulator from scratch in JavaScript: 1. a stack and register machine
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State of Industrial Control Systems in Poland and Switzerland
TL;DR New update for Kamerka allows to map Industrial Control Systems of whole country. As in previous version, interactive map is created…
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Battle testing data integrity verification with ZFS and Btrfs
In this article I share the results of a home-lab experiment in which I threw some different problems at ZFS, Btrfs and mdadm+dm-integrity in a RAID-5 setup.
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How do I delete bytes from the beginning of a file? (2010)
It's easy to append bytes to the end of a file: Just open it for writing, seek to the end, and start writing. It's also easy to delete bytes from the end
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What Makes a Graphics Systems Paper Beautiful
Addendum: I've added a few additional tips for conference papers chairs, papers committee members, and papers sorters .
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Rethinking Files
In Unix, everything is a file. This is often viewed as a positive, but it's often a poor abstraction for many things. This discussion goes into some of the issues.
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Stripped-down Kubernetes on the Raspberry Pi
Join me as I test-drive the smallest ever Kubernetes distribution k3s. Find out how this runs on Raspberry Pi compared to kubeadm with Docker.
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Why Ice Lake is Important – a bit-basher’s perspective
With Computex, there’s been a ton of news about Ice Lake (hereafter ICL) and the Sunny Cove core (SNC). Wikichip, Extremetech and Anandtech among many others have coverage (and there will be …
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What are the differences between OpenBSD and Linux?
Maybe you have been reading recently about the release of OpenBSD 6.5 and wonder, 'What are the differences between Linux and OpenBSD?' I've also been there at some point in the past and these are my conclusions. They also apply, to some extent,
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An x86 Assembler in 256 LOC (2017)
For the first “real” post in this blog, we’ll build an x86 assembler in less than 256 lines of C code. Obviously, it won’t implement every x86 instruction, but it will implement a surprisingly useful subset: data movement, control flow, integer arithmetic, bitwise operations, and function calls. We won’t be able to…
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Ways to break your systems code using volatile (2010)
Regarding the example #5, I must be confused about the definition of a sequence point because the resulting assembly output seems to be non-ANSI C:
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The Definitive Guide on Win32 to NT Path Conversion (2016)
Posted by James Forshaw, path’ological reverse engineer.How the Win32 APIs process file pat...
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Why Does Windows Really Use Backslash as Path Separator?
More or less anyone using modern PCs has to wonder: Why does Windows use backslash as a path separator when the rest of the world uses forward slash? The clear intermediate answer is “because DOS and OS/2 used backslash”. Both Windows 9x and NT were directly or indirectly derived from DOS and OS/2, and certainly…
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Firefox brings smooth video playback with the fastest AV1 decoder
With this week's release of Firefox 67, the new high performance royalty-free AV1 video decoder dav1d is now enabled by default on all desktop platforms (Windows, OSX and Linux) for ...
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JavaScript Array.push is 945x faster than Array.concat
It took six whole seconds to merge 15,000 arrays with an average size of 5 elements with .concat. What the hell is the Javascript's .concat method doing under the hood?
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Building a home NAS on a shoestring budget with the Rock64 SBC (2018)
I’ve gone through many iterations of a Home NAS over the years. It started with an AMD Phenom based system running in a Norco case with about 8 hard SATA hard drives (4 primary, 4 backup via Rsync). The noise and power consumption of that system was overkill for what it was used for, so I sold it and went to a…