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Pipes and Filters
Pipelines are an extremely useful (and surprisingly underused) architectural pattern in modern software engineering. The concept of using pipes and filters) to control the flow of data through...
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 6,942 posts.
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Looking Forward to Postgres 19: Query Hints
Postgres 19 brings plan advice: the query hints the Postgres community held off on for 15 years. Shaun Thomas covers the 15-year debate, pg_plan_advice, pg_stash_advice, and how to use them.
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SIMD-friendly algorithms for substring searching (2016)
Popular programming languages provide methods or functions which locate a substring in a given string. In C it is the function strstr , the C++ class std::string has the method find , Python's string has methods pos and index , and so on, so forth. All these APIs were designed for one-shot searches . During past…
2315
Hypervisor Development in Rust
In the ever-evolving field of information security, curiosity and continuous learning drive innovation. This blog series is tailored for those deeply engaged in experimental projects, leveraging Rust’s capabilities to push the boundaries of what’s possible. The focus on Rust, after exploring various programming…
2316
Rust in the Linux Kernel: Just the Beginning
Support for using Rust in the Linux Kernel was recently merged by Linus Torvalds. This is important because Rust is memory safe, meaning that code written in Rust does not suffer from things like buffer overflows, use-after-free, and other memory management vulnerabilities that plague software written in unsafe…
2317
Big News for ZFS on Linux
Canonical announced a few weeks ago that ZFS will be included in the next release of Ubuntu Linux, on by default and fully supported. And it’s no exaggeration…
2318
FreeBSD 11.1 released
The FreeBSD Release Engineering Team is pleased to announce the availability of FreeBSD 11.1-RELEASE. This is the second release of the stable/11 branch.
2319
Back to FreeBSD: Part 1
Containers ran in production on FreeBSD thirteen years before Docker. So why does nobody talk about it?
2320
Ubuntu 24.04 LTS will enable frame pointers by default
Today Canonical is raising the bar for performance and observability by enabling frame pointers by default in Ubuntu 24.04 LTS. […]
2321
Rust SIMD on the GPU
At VectorWare , we are building the first GPU-native software company . Today, we are excited to announce that we can successfully use Rust's portable SIMD ( core::simd ) on the GPU. This milestone marks a significant step towards our vision of enabling developers to write complex, high-performance applications that…
2322
Why is there a “V” in SIGSEGV Segmentation Fault?
My program received a SIGSEGV signal and crashed with "Segmentation Fault" message. Where does the "V" come from? Did I read it wrong? Was there a "Segmentation *V*ault?"? Or did Linux authors make a mistake? Shouldn't the signal be named SIGSEGF?
2323
Building a more power-efficient browser
Today, Jason Weber shared a post on the Windows Experience Blog demonstrating the power efficiency of Microsoft Edge over other popular browsers on Windows 10. With the Windows 10 Anniversary Update, we are hard at work pushing the envelope further, engineering Microsoft Edge to last even longer with typical…
2324
Molly guard in reverse
A blog about software craft and quality
2325
Uxn is a virtual machine with 32 instructions
By Devine Lu Linvega
2326
The Mysterious 50 Ohm Impedance: Where It Came from and Why We Use It (2021)
50 Ohm impedance became the standard impedance used in RF transmission lines long ago, but it is still useful today and is a standard reference impedance used in test equipment.
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Playstation 2 GS emulation – the final frontier of Vulkan compute emulation
As you may, or may not know, I wrote paraLLEl-RDP back in 2020. It aimed at implementing the N64 RDP in Vulkan compute. Lightning fast, and extremely accurate, plus the added support of up-scaling on top. I’m quite happy how it turned out. Of course, the extreme accuracy was due to Angrylion being used as reference…
2329
ACM Software System Award Given to seL4 Microkernel
William Gropp, University of Illinois; Pavan Balaji, Meta; Rajeev Thakur, Yanfei Guo, Kenneth Raffenetti, and Hui Zhou (all of Argonne National Laboratory), receive the ACM Software System Award for MPICH, which has powered 30 years of progress in computational science and engineering by providing scalable, robust…
2330
Unusual circuits in the Intel 386's standard cell logic
I've been studying the standard cell circuitry in the Intel 386 processor recently. The 386, introduced in 1985, was Intel's most complex pr...
2331
Reducing Memory Usage in Ruby
I’ve been working on building a compacting garbage collector in Ruby for a while now, and one of the biggest hurdles for implementing a compacting GC is updating references. For example, if Object A points to Object B, but the compacting GC moves Object B, how do we make sure that Object A points to the new location?…
2332
Introduction to Coreboot, an open source BIOS
Deze pagina bestaat niet of is niet meer beschikbaar. Oude XS4ALL-homepages zijn soms nog terug te vinden via webarchieven.
2333
Windows 7 Network Awareness: How Windows knows it has an Internet connection
Have you ever been connecting to a new wireless network and seen the following pop-up balloon?
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Hunting down the stuck BGP routes
BGP is the glue between all of the thousands of border routers that make up the internet (you can find this post (battleships) and this post (EvE) as a crash course on how BGP works).
2337
A lock-free ring-buffer with contiguous reservations (2019)
Building a lock free continuous ring buffer
2338
Big Sur is both 10.16 and 11.0
macOS 11.0 will identify itself differently according to the SDK used, and an environment variable does the same for scripts.
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Programmer's critique of missing structure of operating systems
Patterns and structures of current operating systems and some thoughts about how that could be improved, with lessons learnt from Self, Smalltalk and other "structured" systems.