2041
Why we need SIMD
tl/dr: it can deliver big performance speedups at modest area cost
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 4,389 posts.
2042
Microvium Is Small
The Microvium JavaScript engine for microcontrollers takes less than 16 kB of ROM and 64 bytes of RAM per VM while idle, making it possibly the smallest JavaScript engine to date with more language features than engines 4x its size
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2045
Vectorized Emulation: fuzzing at 2 trillion instructions per second
This is the introduction of a multipart series. It is to give a high level overview without really deeply diving into any individual component.
2046
Practical Garbage Collection - Part 1: Introduction
Introduction This is the first part of a series of blog posts I intend to write, whose aim will be to explain how garbage collection works in the real world (in particular, with the JVM). I will co…
2047
Using select(2) the right way
This started out as a Hacker News comment about a blog post about select being fundamentally broken After that the same author wrote why epoll is broken as well. I don’t know what problem author is trying to solve but let’s pick this one:
2048
Systems design 2: What we hope we know
Someone asked if I could write about the rise of AI and Large Language Models (LLMs) and what I think that means for the future of people, t...
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2050
How to Structure C Projects: These Best Practices Worked for Me
I recently worked on two different C projects, and I wanted to structure them in a way that would make them easy to maintain and understand. I also wanted to make sure that the projects were easy to build and test. In this post, I will share my experience and the best practices I found for structuring C projects.
2051
IPv6 privacy addresses crashed the MIT CSAIL network
A few hours ago, I sent the following “dear colleagues” email (lightly edited to remove some private details) to all my users at work: This has been a very trying week. For those of you…
2052
Windows 10 in-place upgrades are a severe security risk
This is a big issue and it has been there for a long time. Just a month ago I finally got verification that the Microsoft Product Groups n...
2053
Software Development at 1 Hz
People keep saying that a one line source code change should take one second to be “effective”. “Effective” meaning that you get some form…
2054
Too Many Open Files
Recently I’ve been working on a pretty big rust project and to my surprise Icouldn’t get tests to work properly.
2055
The Linux scheduler: A decade of wasted cores (2016)
The Linux Scheduler: a Decade of Wasted Cores – Lozi et al. 2016 This is the first in a series of papers from EuroSys 2016. There are three strands here: first of all, there’s some grea…
2056
Many Core processors: Everything You Know (about Parallel Programming) Is Wrong
David Ungar is "an out-of-the-box thinker who enjoys the challenge of building computer software systems that work like magic and fit a user...
2057
The End of the General Purpose Operating System
As interesting chat on Twitter today reminded me that not everyone is probably aware that we’re seeing a concerted attempt to dislodge the general purpose operating system from our servers.
2058
Strategies for Fast Lexers
Making compilation pipelines fast, starting with the tokenizer
2059
Passing nothing is surprisingly difficult
My day job is in browsers and cryptography , not compilers, yet I often find that I need to spend more of my time working through the semantics of programming languages than using them. This post discusses a thorny cross-language issue between C, C++, and Rust. In short:
2060
Building a Shell
I built a tiny shell in C to learn what fork, execvp, and dup2 are doing under the hood.
2061
Rqlite 6.0: the evolution of a distributed database design
rqlite is a lightweight, open-source, distributed relational database written in Go, which uses SQLite as its storage engine. v6.0.0 is out now and makes clustering more robust. It also lays the foundation for more important features. What's new in 6.0? 6.0 multiplexes multiple logical connections between rqlite nodes…
2062
Research papers in the .NET source
This post is completely inspired by (or ‘copied from’ depending on your point of view) a recent post titled JAVA PAPERS (also see the HackerNews discussion). However, instead of looking at Java and the JVM, I’ll be looking at references to research papers in the .NET language, runtime and compiler source code.
2063
Understanding the Go Scheduler
Go Scheduler
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CPU Introspection: Intel Load Port Snooping
I blog about random things security, everything is broken, nothing scales, shared memory models are flawed.
2066
Computer Networking Fundamentals – Learning Series (2023)
This colorful series walks you through the networking basics in just a few thousand words! It also offers hands-on labs to practice the obtained knowledge.
2067
Linux Context Switching Internals: Process State and Memory
How does the Linux kernel represent processes and their state: A breakdown of task_struct and mm_struct
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Operating on a minimal two-core Postgres instance: Query optimization insights
In an era where the costs for cloud services continue to soar, I want to outline how our data team has successfully managed to run the infrastructure of our energy trading company within the first year using only two PostgreSQL database instances - each equipped with just two CPU cores and four GB of RAM. Despite this…
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