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TinyKVM: Fast sandbox that runs on top of Varnish
TinyKVM can be used to sandbox regular Linux programs or programs with specialized APIs embedded into your servers.
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 163 posts.
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Debugging Hetzner: Uncovering failures with powerstat, sensors, and dmidecode
About a year ago, Hetzner launched the AX162 server line. It offered better price / performance than its predecessor, AX161. We were very excited to adopt it, but we soon encountered serious reliability issues. We observed that the new servers had 16 times higher annual failure rates.
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Linux Sandboxes and Fil-C
Memory safety and sandboxing are two different things. It's reasonable to think of them as orthogonal: you could have memory safety but not be sandboxed, or you could be sandboxed but not memory safe.
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Zlib-rs is faster than C
We've released version 0.4.2 of zlib-rs , featuring a number of substantial performance improvements. We are now (to our knowledge) the fastest api-compatible zlib implementation for decompression, and beat the competition in the most important compression cases too.
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C stdlib isn't threadsafe and even safe Rust didn't save us
Threads, TLS, a C stdlib race, and Rust: how EdgeDB hit a hidden landmine.
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Unpacking Cloudflare Workers CPU Performance Benchmarks
Cloudflare investigated CPU performance benchmark results for Workers, uncovering and fixing issues in infrastructure, V8 garbage collection, and OpenNext optimizations. These improvements have made Cloudflare Workers faster for all customers.
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Tiny JITs for a Faster FFI
Can we have a faster FFI for CRuby? Yes.
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It's the end of observability as we know it (and I feel fine)
In a really broad sense, the history of observability tools over the past couple of decades have been about a pretty simple concept: how do we make terabytes of heterogeneous telemetry data comprehensible to human beings? We’ve seen different companies tackle this in different ways for technology like Ruby on Rails…
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Going down the rabbit hole of Git's new bundle-URI
Git's new bundle-uri could help significantly speed up clones, but what bugs lurk within?
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Linux on Snapdragon X Elite: Linaro and Tuxedo Pave the Way for ARM64 Laptops
Linaro Connect 2025 showcases progress in bringing Linux on Snapdragon-Powered Devices
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io_uring is faster than mmap
Sourcing data directly from disk IS faster than caching in memory. I brought receipts. Because hardware got wider but not faster, the old methods don't get you there. You need new tools to use what is scaling and avoid what isn't.
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QNX Self-Hosted Developer Desktop
Try the first release of the QNX Developer Desktop, a self‑hosted QNX development environment that eliminates cross‑compilation for faster workflows.
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How we replaced Elasticsearch and MongoDB with Rust and RocksDB
Radar offers geocoding, place search, and fraud detection APIs, powered by HorizonDB, a Rust-based engine delivering 20k QPS and sub-millisecond latency.
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Emulating an iPhone in QEMU
From black screens and boot issues to rendering quirks and PAC puzzles, here’s what we learned getting iOS to finally say hello.
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Fast Allocations in Ruby 3.5
Many Ruby applications allocate objects. What if we could make allocating objects six times faster? We can! Read on to learn more!
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Understanding Smallpond and 3FS
A concise breakdown of what smallpond and 3FS are, how to use them, and if they're suitable for your data processing needs.
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Polars Cloud: The Distributed Cloud Architecture to Run Polars Anywhere
We introduce Polars Cloud, the distributed cloud architecture to scale and run Polars anywhere.
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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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Faster interpreters in Go: Catching up with C++
A novel technique for implementing dynamic language interpreters in Go, applied to the Vitess SQL evaluation engine
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TernFS – An exabyte scale, multi-region distributed filesystem
XTX Markets is a leading algorithmic trading firm which uses state-of-the-art machine learning technology to produce price forecasts for over 50,000 financial instruments across equities, fixed income, currencies, commodities and crypto. It uses those forecasts to trade on exchanges and alternative trading venues, and…
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Neki – Sharded Postgres by the team behind Vitess
Sharded Postgres by the team behind Vitess
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GMP damaging Zen 5 CPUs?
We have fried two Ryzen 9950X CPUs in a few months by running GMP tests and the GMP-based factoring program GMP-ECM . This is not expected, of course. In this page, we provide as much information as possible to help analysing the problem.
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We made Postgres writes faster, but it broke replication
Exploring LSM tree implementation in PostgreSQL for better write performance.
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Strings Just Got Faster
In JDK 25, Strings used as keys in immutable Maps can be much faster.
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Colossus for Rapid Storage
Colossus’s performance comes from its stateful protocol, which plays a pivotal role in the new Rapid Storage offering launched at Google Cloud Next '25.
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HipKittens: Fast and furious AMD kernels
multi silicon ai is coming
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New records on Wendelstein 7-X
Wendelstein 7-X—the leading fusion device of the stellarator type—achieved several new performance milestones during its latest run of experiments. Among them is a world record for triple product, the value that measures how close a fusion device is to generating net energy across the plasma.