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The most popular blog posts about systems & performance on Hacker News. 178 posts.
Firecracker needs KVM and therefore a Linux host, and the image tooling around it needs loop mounts and Linux userland. We rebuilt the stack on Apple's Virtualization.framework to boot the same OCI images as microVMs on macOS and on Linux.
Figuring out how it went missing.
How ParadeDB uses principles from search engines to optimize Postgres' Top K performance.
Oxide's approach to emulation, simulation, and tiny versions of big things.
Git packfiles were designed for mmap and local disk, so pulling one object out of a bucket means guessing at a byte range. I wrote a new format instead.
How vLLM reaches 2.2k tokens per second per H200 for DeepSeek-style MoE serving with Wide-EP, async scheduling, dual-batch overlap, disaggregated serving, CUDA
Run, compile, and link C programs instantly with CJIT.
Rust struct serialization problem caused by many nullable SQL columns.
This summary of Brad’s HIPS 2025 keynote looks at how HPC programming has (and has not) changed over the past 30 years
The FreeBSD Release Engineering Team is pleased to announce the availability of FreeBSD 14.5-RELEASE. This is the sixth release of the stable/14 branch.
A practical guide to speculative decoding in vLLM on AMD GPUs, covering draft-and-verify mechanics, MTP, EAGLE-3, DFlash, DSpark, configuration, tuning, and ben
Eight long held and common beliefs about the network have been shown, time after time, to be false. What are they, and what do they mean?
Why two identical VMs on the same host can perform 20% differently — and what NUMA topology in Xen-based virtualization actually costs you.
Compute is the brain of the Waymo Driver, translating raw sensor data into real-time driving commands. Operating demonstrably safe, physical AI on the road demands a fundamental shift towards a system engineered for deterministic, low-latency performance. Over the past decade, we have co-designed our hardware…
Roku provides the simplest way to stream entertainment to your TV. On your terms. With thousands of available channels to choose from.
Could we get more cache space with the same hardware? We prototyped compression inside Cloudflare's cache to find out.
If you used PCs in the 90s, you probably remember the 'Intel Inside MMX' stickers. This article explores Intel's major attempt at bringing SIMD instructions to mainstream desktop CPUs.
The optimizations behind Wasmi 2.0, and how they compare to Wasm3 and Stitch.
In a previous post SIMD Matters I discussed the big wins I got from graph coloring to make the contact solver faster. That same approach exists in Box3D. I like to call this approach “wide SIMD”. The idea is to process multiple work units at the same time. In the contact solver this means solving four contact points…
Unified code base. Upstream first. No fork. SoC agnostic. Learn how you can build with Qualcomm Linux 2.0
We’re excited to announce that Google will launch Chrome for ARM64 Linux devices in Q2 2026, following the successful expansion of Chrome to Arm-powered macOS devices in…
News and information from Gentoo Linux
Our customers reasonably expect to be able to spend on their card, make bank transfers and pay their bills 24 hours a day, 365 days a year. Their lives don’t have downtime for maintenance so nor should we. We dedicate a lot of our engineering effort to minimise the risk of downtime during technical migrations and…
Why Postgres postmaster contention becomes a bottleneck at scale, how connection bursts and worker churn trigger it, and which fixes helped in production.
An in-depth technical analysis of TigerBeetle's core architecture, exploring how static memory allocation, zero-copy io uring interfaces, and Zig-based…
Lessons learned from scaling Postgres-backed durable queues for users running tens of billions of workflows per month.
We presented MayaNAS at OpenZFS Developer Summit 2025, introducing objbacker.io—a native ZFS VDEV for object storage. No FUSE, direct kernel-to-SDK integration achieving 3.7 GB/s throughput.
This is probably the question I get asked most about Spacetime. It’s a simple enough question, and it certainly seems like it should have a simple answer. Scaling is a complex topic, and the devil is…
