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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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Watching Go's new garbage collector move through the heap
Go 1.26 made Green Tea the default GC. We observe its cache-friendliness with perf, visualize the heap to see how Go allocates, and poke at a sparse-page problem a non-moving collector like Go's struggles with.
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BPF Performance Tools: Linux System and Application Observability
BPF Performance Tools: Linux System and Application Observability (book)
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A Day in the Life: The Global BGP Table
Update: This article was discussed on Hackernews Much has been written and a lot of analysis performed on the global BGP table over the years, a significant portion by the inimitable Geoff Huston.
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Erlang 19.0 Garbage Collector
Each Erlang process has its own stack and heap which are allocated in the same memory block. When the stack and the heap meet, the garbage collector is triggered and memory is reclaimed. Find out more on our blog.
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How terminal works. Part 1: Xterm, user input (2021)
Hi there. I am going to post here thing about my work or my technical hobbies. This means c++, java, haskell, python, linux etc.
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Life at 800 MHz
We’ve been using a Sony Vaio VGN-P588E for the past few months as our primary personal laptop. This thing’s great; it’s got a small but not uncomfortable keyboard. It’s got a trackpoint, which we absolutely need to keep our hands healthy. Crucially, it’s only 1.5 pounds. We’re disabled in a way that means we’ve got to…
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S3 is showing its age
I'm squarely in the trough of disillusionment with S3.
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Japan HP accidentally deleted 77TB data in Kyoto U. supercomputing system
京都大学学術情報メディアセンターセンター長 岡部 寿男
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Payment systems while working at a pizza place
Placing an order and capturing a payment are really different actions. I also learned a lot in a few days.
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WASI 0.3
WASI 0.3 is official, and async is now native to WebAssembly Components. The WASI Subgroup voted to ratify WASI 0.3.0, rebasing WASI onto the WebAssembly Component Model’s async primitives. The 0.3.0 specification is now stable, and runt...
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SQLite in Production: Optimizing WAL Mode, Concurrency, and VFS Layers
Transitioning SQLite from a local development tool to a production-grade database requires a deep understanding of its internal mechanics. This article explores how to tune WAL mode, manage busy handlers, and leverage custom Virtual File System (VFS) layers to achieve ultra-low latency.
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Exploring Linux command-line space time
I was curious to explore how long a program takes to run, how much memory is used over time, and what processes/threads are spawned. To provide answers I wrote a tool, which I named st . Here are a few things I looked into.
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Leveraging Rust and the GPU to render user interfaces at 120 FPS
From the Zed Blog: A deep-dive into the graphical underpinnings of GPUI, the hardware-accelerated framework that powers Zed's user interface.
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Linux boot partitions and how to set them up
Posts and writings by Lennart Poettering
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Tricking PostgreSQL into using an insane, but faster, query plan
At Spacelift, we use PostgreSQL (specifically Aurora Serverless) for most of our primary database needs. This article will show you our optimization story and how PostgreSQL row count estimation can go very wrong.
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Exploring the software that flies SpaceX rockets and starships
Spaceflight, from the beginning, has depended on computers – both on the ground and in the spacecraft. SpaceX has carried it to a new level. We recently spoke with Steven Gerding, Dragon’s software development lead, about the special challenges software development has for SpaceX's many missions.
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After 5 days, my OS doesn't crash when I press a key
Day 37: After 5 days, my OS doesn't crash when I press a key
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We unplugged a data center to test our disaster readiness
On Thursday, November 18, 2021, Dropbox did not go down. On a normal day this would be a non-event—a sign that everything was operating as usual. However, this day was anything but usual. At 5:00 pm PT, a group of Dropboxers were huddled on a Zoom call when the command was given to physically unplug our San Jose data…
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Exactly-once Semantics: How Kafka Does it
Exactly-once is a hard problem to solve, but we've done it. Available now in Apache Kafka 0.11, exactly-once semantics.
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What we talk about when we talk about system design
Early in my research career, I had a chance to work with some of the best system researchers1 in the world on a number of really interesting system designs. One of the enjoyable aspects of research was the particular process used by researchers (particularly in the SOSP/OSDI community) to come up with novel yet…
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WASM Is the New CGI
I read a wonderful twitter thead about CGI and the birth of the web and this triggered a thought I've been kicking around. > Wasm is the new CGI And to be cle...
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Why Is It Taking 20 Minutes to Mine This Bitcoin Block?
You have just made a Bitcoin transaction and you are eager to see if it appears in the next block. You know that the expected time between Bitcoin blocks is 10 minutes. You check the log of your Bitcoin node. It has been 7 minutes since the previous block. You recall that blocks occurrences in Bitcoin are a Poisson…