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Scaling Linux Services: Before accepting connections
Theo Julienne is a software & infrastructure engineer.
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 6,942 posts.
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The Inner Workings of Distributed Databases
Comparison of replication options of time-series databases.
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Apple's HTTP POST caching is a bug
One of the changes in Apple’s release of iOS6 last week was a surprising new ability to cache POST responses.
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Call me maybe: etcd and Consul
In the previous post, we discovered the potential for data loss in RabbitMQ clusters . In this oft-requested installation of the Jepsen series, we’ll look at etcd : a new contender in the CP coordination service arena. We’ll also discuss Consul ’s findings with Jepsen.
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Implicit In-order Forests: Zooming a billion trace events at 60fps
In the course of trying to figure out how to smoothly zoom timelines of a billion trace events, I figured out a cool tree structure that I can’t find elsewhere online, which it turned out two of my friends have independently derived after not finding anything on their own searches. It’s a way of implementing an index…
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Life of an inference request (vLLM V1): How LLMs are served efficiently at scale
vLLM is an open-source inference engine that serves large language models. We deploy vLLM across GPUs and load open weight models like Llama 4 into it. vLLM sits at the intersection of AI and systems programming, so we thought that diving into its details might interest our readers.
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Why I dislike systemd
As a Linux sysadmin in the 2010s, it's hard not to have an opinion on systemd. But what I find baffling about it is how divisive it is; nearly everyone (or at least the most vocal crowd) seems to either love it or hate it. When I tell people that systemd was the catalyst for my defection to OpenBSD last year, their…
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Not So Fast: Analyzing the Performance of WebAssembly vs. Native Code
Abhinav Jangda, Bobby Powers, Emery D. Berger, and Arjun Guha, University of Massachusetts Amherst
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Which Machines Do Computer Architects Admire? (2013)
The Toolsmith Conference was held in Chapel Hill, NC, in October, 2001, to honor Fred Brooks. Dr. Brooks was a student of Howard Aiken at Harvard, joined IBM to work on the Stretch Project, and later served as chief architect of the IBM S/360. He founded the Computer Science Department at UNC-Chapel Hill in 1964 and…
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Std: Clamp generates less efficient assembly than std:min(max,std:max(min,v))
UPDATE: This blog post has been updated based on feedback from Reddit and Hacker News. HN discussion: https://news.ycombinator.com/item?id...
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Unix shells are generally not viable access control mechanisms any more
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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Under the hood: Vec<T>
Let's look at Vec<T> to get a better understanding of its inner structure.
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Do low-level optimizations matter? Faster quicksort with cmov (2020)
Collectively, we have been thinking about sorting for longer than we have had computers. There is still an active literature 1 , 2 , 3 . We are taught that how the counts of comparisons and swaps vary with problem size is what matters: as problems get bigger, order dominates, and anything else is buried in the noise…
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DirectX Adopting SPIR-V as the Interchange Format of the Future
Today the Direct3D and HLSL teams are excited to share some insight into the next big step for GPU programmability. Once Shader Model 7 is released,
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Discord Reduced WebSocket Traffic by 40%
How we rolled out zstandard and other improvements across our gateway cluster to reduce the amount of bandwidth that’s used by our clients.
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What Are Your GCC Flags?
What Are Your GCC Flags ? 09 March 2014 Say What ? Your GCC build...
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Ubuntu 17.04 Released
Ubuntu 17.04 released today, supporting Kubernetes, Docker, LXD and Snaps. This is the 26th release of Ubuntu, the world’s most widely deployed Linux OS and the leading platform for cloud and IoT operations. “The breadth and pace of open source innovation has made it the center of gravity in technology today, and the…
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Postgres audit tables saved us from taking down production
Learn how audit tables helped us avoid a serious incident, and how you can create audit tables in your own Postgres databases.
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Safely Reviving Shared Memory
At Mozilla, we want the web to be capable of running high-performance applications so that users and content authors can choose the safety, agency, and openness of the web platform. ...
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VexRiscv is a quadcore, Linux-capable RISC-V softcore for FPGA
FPGAs can be seen as a bridge between the domains of hardware and software as their hardware operation can be reprogrammed using code, giving developers unprecedented flexibility. In advanced products that Antmicro helps its customers build, this flexibility to process parallel data often needs to be complemented with…
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Upstreaming Linux kernel support for the Snapdragon X Elite
Discover the power of Snapdragon X Elite with upstreamed Linux kernel support. Explore areas of focus and unlock new potential with Snapdragon Linux today.
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NetBSD 9.0
The NetBSD Project is pleased to announce NetBSD 9.0, the seventeenth major release of the NetBSD operating system.
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