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ReactOS Newsletter 103 – Late 2023 News
ReactOS is a free, opensource reimplementation of windows
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 6,949 posts.
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Hidden Costs of Memory Allocation
It’s important to understand the cost of memory allocations, but this cost can be surprisingly tricky to measure. It seems reasonable to measure this cost by wrapping calls to new[] and delet…
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The Tower of Weakenings: Memory Models for Everyone
In my previous article I looked at the ways that Rust could be better at pointers. Half of the problems were fundamental issues that affect basically every programming language that lets you mess with pointers directly, and the other half were rust-specific issues. My article also proposed two solutions: for the…
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Compilers and IRs: LLVM IR, SPIR-V, and MLIR
Overall discussion on compilers and IRs (LLVM IR, SPIR-V, and MLIR): why they are in their current manner and how they would evolve
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Rust: Investigating an Out of Memory Error
TL;DR: We discovered the hard way that when backtrace is enabled, the anyhow library is capturing a backtrace on every error. Only when printing this error in debug format!(”err: {:?}”, error) backtrace’s symbols are resolved to human-friendly names, thus leading to a significant memory increase for your application…
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Partitioning in Postgres, 2022 Edition
Tracking improvements to Postgres partitioning since 2017. In just five years it’s gone from a non-feature to a very good one.
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Redox OS 0.6.0
The Redox official website
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DOS Memory Management
The memory management in DOS is simple, but that simplicity may be deceptive. There are several rather interesting pitfalls that programming documentation often does not mention.
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Reading NFS at 25GB/s using FIO and libnfs
My current employer does a lot of really cool systems work that’s covered by NDAs. I recently did some work to integrate a cool open source tool into our workflow. Felt it deserved a blog post. NFS Testing Requires Parallelism. I work for Pure Storage. One of the products we make is a scale-out NFS1 (and…
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Xfce 4.10 released
Today, after 1 year and 4 months of work, we are pleased to announce the release of the Xfce desktop 4.10, a new stable version that supersedes Xfce 4.8.
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Understanding Glibc Malloc (2015)
I always got fascinated by heap memory. Questions such as How heap memory is obtained from kernel? How efficiently memory is managed? Is it managed by kernel or by library or by application itself?…
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IDIV DoS (INT_MIN / -1)
A little fun for the last day of 2012: how to crash a program via division? x86’s IDIV instruction traps not only on division by zero, but also on INT_MIN / -1 (signed integer overflow).
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X86 boot sector written in C (2010)
Writing an MS-DOS-compatible boot sector in C: parsing the FAT BIOS parameter block, finding IO.SYS, and loading it via BIOS INT 13h in real mode.
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Accessing a DRM Framebuffer to display an image
To test if a display interface works we often don't want to use a huge framework like GTK or Qt. This article shows an easy way on how we can use a framebuffer directly on a DRM graphics driver under Linux.
6108
Using strace to figure out how Git push over SSH works
Yesterday I was curious about how git push works over SSH. I’m getting more used to using strace to figure this kind of thing out, so I gave it a shot. If I strace pushing to this site’s repository, this shows up:
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Decoding UTF8 with parallel extract
As a side-quest I recently decided to write a branchless utf8 decoder utilizing the pext or "parallel extract" instruction. It's compliant with rfc-3629 , meaning that it doesn't just naively decode the code-point but also checks for overlong encoding, surrogate pairs and such. Compiled with gcc -O3 -march=x86-64-v3…
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Modern Text Rendering with Linux
Introduction
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Firefox OS Update Adds New Features, Performance Improvements
Just weeks after the first Firefox OS phones hit the market, an update is being made available adding new features, support for a number of new languages and significant performance ...
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Igniting the GPU: From Kernel Plumbing to 3D Rendering on RISC-V
How I enabled the PowerVR GPU on the TH1520 SoC by writing the missing kernel drivers.
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Lesson Learned from Queries over 1.3T Rows of Data
Explore how our customers use TiDB to handle their mission-critical workloads.
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Cthulhu: Organizing Go Code in a Scalable Repo
Helping millions of developers easily build, test, manage, and scale applications of any size - faster than ever before.
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Making GHC faster at emitting code (2022)
How we gained 2–3% improvements in compile times by making GHC better at printing code.
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Fuzix on a Raspberry Pi Pico
Because your $5 microcontroller needed to run UNIX
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Traceroute Lies: A Typical Misinterpretation Of Output
Traceroute can points to a link having terrible latency, but despite what it appears, it's easy to misread the output and jump to the wrong conclusion.
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Readings in distributed systems
This post is a work in progress.Inspired by a recent purchase of the Red Book, which providesa curated list of important papers around database systems, I’ve decidedto begin assembling a list of im...