2821
Learning about distributed systems: where to start? (2020)
This is definitely not a "learn distributed systems in 21 days" post. I recommend a principled, from the foundations-up, studying of distrib...
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 6,942 posts.
2822
SIMD in Rust
An overview of my work on improving SIMD in Rust.
2823
Tutorial – Write a System Call
Stephen Brennan's personal website and blog.
2824
200 MB RAM FreeBSD desktop
Recently I came across Lunduke post about some mysterious Vendefoul Wolf Linux distribution that uses 217 MB RAM with Devuan as base (no systemd(1) here) and XLibre X11 server along with IceWM wind…
2825
Speed Matters
I think that one of the most important things to focus on improving is how fast you can work.
2826
2827
A performance comparison between Java and C on the Nexus 5
Android phones have been growing ever more powerful with time, with the Nexus 5 sporting a quad-core 2.3 GHz Krait 400; this is a very powerful CPU for a mobile …
2828
2829
Possible reasons for 8-bit bytes
Some possible reasons for 8-bit bytes
2830
Writing memory efficient C structs
A struct in C is the best way to organize your data so that you can easily use the data later in your program. However, there are a few caveats to C structures, mainly how their memory works. Note that I’m making a lot of assumptions about type sizes and standards. These can differ between systems and ABI’s, so for…
2831
Raspberry Pi CM5 is a faster, drop-in upgrade
The Raspberry Pi Compute Module 5 is smaller than a credit card, and I already have it gaming in 4K with an eGPU, running a Kubernetes cluster, and I even upgraded my NEC Commercial display from a CM4 to CM5, just swapping the Compute Modules! The Compute Module 4 was hard to get for years. It launched right after the…
2832
A Technology Preview of Nginx Support for QUIC and HTTP/3
We announce the technology preview of NGINX support for QUIC+HTTP/3 as pre-release software, available for interoperability testing, feedback, and code contributions. HTTP/3 replaces TCP with QUIC, which is designed to support multiplexed connections more reliably.
2833
How the Go runtime implements maps efficiently without generics
This post discusses how maps are implemented in Go. It is based on a presentation I gave at the GoCon Spring 2018 conference in Tokyo, Japan.
2834
FoundationDB: A distributed unbundled transactional key value store
This paper from Sigmod 2021 presents FoundationDB, a transactional key-value store that supports multi-key strictly serializable transacti...
2835
Plan 9: The way the future was
We know what Unix's future used to look like. It was designed by the research group at Bell Labs that built Unix and called ‘Plan 9 from Bell Labs’. [ 154 ] Plan 9 was an attempt to do Unix over again, better.
2836
Power Wastage on an Idle Laptop
Ever since I upgraded to Windows 10 it’s felt like my battery life is worse. My suspicion was various scanning tasks that were springing to life more frequently, but it was just a hunch. So, …
2837
2838
2839
A Bourne-style shell built from scratch in 35 minutes [video]
We build a shell in the style of the Bourne shell, Bash, zsh, etc. It supports (1) running commands with arbitrarily many arguments, (2) quoting those arguments, and (3) combining the commands into arbitrarily long pipelines where the output of one command becomes the input of the next. This requires writing a parser…
2840
H265: Technical Overview
HEVC is among us. On January 25, 2013, the ITU announced the completion of the first stage approval of the H.265 video codec standard and in the last 1 year several vendors/entities have started to…
2841
Perils of Constructors
One of my favorite blog posts about Rust is Things Rust Shipped Without by Graydon Hoare. To me, footguns that don't exist in a language are usually more important than expressiveness. In this slightly philosophical essay, I want to tell about a missing Rust feature I especially like: constructors.
2842
From 30 to 230 Docker containers per host
I could not find much information on the interwebs how many containers you can run per host. So here are mine and the issues we ran into along the way.
2843
TLA+ model checking made symbolic
TLA+ model checking made symbolic Konnov et al., OOPSLA’19 TLA+ is a formal specification language (Temporal Logic of Actions) particularly well suited to reasoning about distributed algorith…
2844
Running a full desktop environment on a Kindle (2019)
Ethical Hacking and Cybersecurity Blog
2845
Faster remainders when the divisor is a constant: beating compilers & libdivide
Not all instructions on modern processors cost the same. Additions and subtractions are cheaper than multiplications which are themselves cheaper than divisions. For this reason, compilers frequently replace division instructions by multiplications. Roughly speaking, it works in this manner. Suppose that you want to…
2846
Building rqlite 9.0: Cutting disk usage by half
rqlite is a lightweight, open-source, distributed relational database written in Go. It is built on the Raft consensus protocol and uses SQLite as its storage engine. Development of 9.0 has begun and aims to reduce disk usage by approximately 50%. This goal will be achieved through a high-level design overhaul…
2847
Zed Decoded: Rope and SumTree
From the Zed Blog: In this episode of Zed Decoded, Thorsten asks the founders — Nathan, Max, Antonio — about the data structures at the heart of Zed: Rope and SumTree.
2848
Exploiting the Linux kernel via packet sockets
Guest blog post, posted by Andrey KonovalovIntroductionLately I’ve been spending some time ...
2849
Using JDK 9 Memory Order Modes
This guide is mainly intended for expert programmers familiar with Java concurrency, but unfamiliar with the memory order modes available in JDK 9 provided by VarHandles. Mostly, it focuses on how to think about modes when developing parallel software. Feel free to first read the Summary .
2850
Making a micro Linux distro (2023)
A guide on building a simple Linux distribution from scratch. Detailed guide on building the kernel and the init process. Finally, a little distribution is built with u-root that is capable of connecting to the Internet.