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Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 6,942 posts.
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Into the Borg – SSRF inside Google production network
Intro - Testing Google Sites and Google Caja In March 2018, I reported an XSS in Google Caja, a tool to securely embed arbitrary html/javascript in a webpage. In May 2018, after the XSS was fixed, I r
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Real-Time Noise Suppression Using Deep Learning
Imagine waiting for your flight at the airport. Suddenly, an important business call with a high profile customer lights up your phone. Tons of background noise clutters up the soundscape around you…
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Noisy neighbor detection with eBPF
By Jose Fernandez, Sebastien Dabdoub, Jason Koch, Artem Tkachuk
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Linux tracing systems and how they fit together
Linux tracing systems & how they fit together
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Cloudflare Meerkat - Globally distributed consensus
Cloudflare Research is building a global consensus service called Meerkat that uses a new consensus algorithm called QuePaxa. We plan to use Meerkat to build a strongly consistent, fault-tolerant key-value store, and other applications.
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Performance Speed Limits
A laundry list of speed limits that your code can’t exceed.
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Introduction to PostgreSQL physical storage
I initially wrote this post for myself, I wanted to understand enough about the underlying physical storage to be able to grasp other concepts which can affect your database. This post is probably more aimed to people with similar interests, I will try to keep it accurate but the aim is to make it simpler to…
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AV1@Scale: Film Grain Synthesis, The Awakening
Unleashing Film Grain Synthesis on Netflix and Enhancing Visuals for Millions
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Virtual Machine as a core Android Primitive
News and insights on the Android platform, developer tools, and events.
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Print(“lol”) doubled the speed of my Go function
Here is a Go function, if_max(). It finds the max value of an array of integers. Simple enough:
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The Go runtime scheduler's way of dealing with system calls
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
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PostgreSQL Features You May Not Have Tried but Should
pgDash is an in-depth monitoring solution designed specifically for PostgreSQL deployments. pgDash shows you information and metrics about every aspect of your PostgreSQL database server, collected using the open-source tool pgmetrics.
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The Container Throttling Problem
This is an excerpt from an internal document David Mackey and I co-authored in April 2019. The document is excerpted since much of the original doc was about comparing possible approaches to increasing efficency at Twitter, which is mostly information that's meaningless outside of Twitter without a large amount of…
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Rust and Nix = easier Unix systems programming
Lately I’m writing lots of Rust , and I’m particularly interested in systems programming on unix. I’ve been using and contributing to a library called nix 1 , whose mission is to provide ‘Rust friendly bindings to *nix APIs’.
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How to handle 1000s of concurrent users on a 360MB VPS
There has been some recent confusion about how much memory you need in a web server to handle a huge number of concurrent requests. I also made a performance claim on the STS list that got me an unusual number of private emails.
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Problems with “graceful shutdown” in Kubernetes (2019)
Grace is overrated
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Rust’s Standard Library on the GPU
GPU code can now use Rust's standard library. We share the implementation approach and what this unlocks for GPU programming.
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What If We Could Rebuild Kafka from Scratch?
The last few days I spent some time digging into the recently announced KIP-1150 ("Diskless Kafka"), as well AutoMQ’s Kafka fork, tightly integrating Apache Kafka and object storage, such as S3. …
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WASM Wayland Web (WWW)
So there are only 2 web browser engines, and it seems likely there will soon only be 1, and making a whole new web browser from the ground up is effectively impossible because the browsers vendors have weaponized web standards complexity against any newcomers. Maybe eventually someone will succeed and there will be 2…
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The tilde in your PATH may not be your HOME
I was playing with the nono agent sandboxing tool and it greeted me with a warning: PATH entries the sandbox can write to: ~/.local/bin/ which looked suspicious.
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Linux 3.7 released
Summary of the changes and new features merged in the Linux kernel during the 3.7 development cycle
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From slow to SIMD: A Go optimization story
So, there's this function. It's called a lot. More importantly, all those calls are on the critical path of a key user interaction. Let's talk about making it fast.
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68 Katy – 68000 Linux on a Solderless Breadboard
What does it take to build a little 68000-based protoboard computer, and get it running Linux? In my case, about three weeks of spare time, plenty of coffee, and a strong dose of stubborness. After banging my head against the wall with problems ranging from the inductance of pushbutton switches to memory leaks in the…
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Performance Improvements in .NET Core
Update (2017/06/12): Added BenchmarkDotNet blog post link. There are many exciting aspects to .NET Core (open source, cross platform, x-copy deployable, etc.) that have been covered in posts on this blog before. To me, though, one of the most exciting aspects of .NET Core is performance. There’s been a lot of…