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VxWorks now with C++17 and Rust support, alongside Ada and SPARK
Wind River announces Wind River Professional Services has been appraised at Level 3 of the CMMI® Institute’s Capability Maturity Model Integration.
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 6,943 posts.
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Linux Threat Hunting: ‘Syslogk’ a kernel rootkit found in the wild
Syslogk Rootkit Revealed: Analysis
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Scalable Live Video Streaming Using NGINX and MPEG-DASH/HLS
Deliver modern applications with NGINX. Explore high-performance load balancing, API gateways, and web server solutions trusted by top global enterprises.
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PostgreSQL 10: Partitions of partitions
PostgreSQL version 10 brings a much anticipated feature: (Native) Table Partitioning .
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NSCopyObject, the griefer that keeps on griefing
NSCopyObject is a very old Foundation function – pre-dating Mac OS X entirely; from the NeXT era – that was originally basically just memcpy , but now it’s complicated. A lot more complicated.
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Graceful behavior at capacity
Suppose we’ve got a service. We’ll gloss over the details for now, but let’s stipulate that it accepts requests from the outside world, and takes some action in response. Maybe those requests are HTTP requests, or RPCs, or just incoming packets to be routed at the network layer. We can get more specific later. What…
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Hardware Intrinsics in .NET 8
.NET 8 includes significant improvements to the Hardware Intrinsics feature.
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gRPC Is Easy to Misconfigure
Google's gRPC is an RPC system that supports many languages, and is relatively widely used. I think its popularity is due to being used for parts of Docker and Kubernetes. I think gRPC is mostly fine, but it is surprisingly easy to screw up by misconfiguring it. Part of that is because RPC systems are challenging to…
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Tiny ELF Files: Revisited in 2021
Quick edit: While I work on a proper update, I'll note here that several posters on reddit and hackernews have pointed out ways to bring the total size of the program down to 105 bytes while still printing the full "Hello, world!" Much credit goes to Josh Triplett , who produced the 105-byte version which you can find…
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Insufficiently known Posix shell features
It's that time of year again apparently. Rather than fill in the template for you this time, I'll just give you the general outline of what...
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NUMA: Cores, memory, and the distance between them
Why two identical VMs on the same host can perform 20% differently — and what NUMA topology in Xen-based virtualization actually costs you.
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How to JIT – An Introduction
When I wrote the introductory article for libjit , I aimed it at programmers who know what JITs are, at least to some extent. I did mention what a JIT is, but only very briefly. The purpose of this article is to provide a better introductory overview of JITing, with code samples that don't rely on any libraries.
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Building the new hypermedia systems
A shiny new edition of Hypermedia Systems is out! Apart from incorporating typo and grammar fixes sent in by readers, the book was completely redesigned inside with a new layout. To achieve a much higher fidelity of design, we ported the book to Typst --- the hot new LaTeX replacement.
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Several months in the life of Project Zero – Part 1: The Chrome bug of suffering
Posted by Sergei Glazunov and Mark Brand, Project ZeroIntroductionIt was a normal week in the Pro...
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A new cycle-stepped 6502 CPU emulator
TL;DR: The how and why of the new 6502 emulator in the chips project.
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Getting Hands-on with io_uring using Go
In Linux, system calls (syscalls) are at the heart of everything. They are the primary interface through which an application interacts with the kernel.
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Raft Consensus with a Minority of Nodes
Raft is a consensus protocol for managing a replicated log across a cluster of nodes. Its key goals are: (1) maintain a consistent replicated log of state transitions, (2) tolerate node failures, and (3) ensure a single leader coordinates all changes while multiple followers replicate. Raft is designed to be…
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Making Chrome on Windows Faster with PGO
Chrome is always looking for ways to speed up the web. Starting in Chrome 53, Chrome has started using Microsoft’s Profile Guided Optimizat...
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Bare Metal Rust 2: Retarget your compiler so interrupts are not evil
Random code snippets, projects and musings about software from Eric Kidd, a developer and occasional entrepreneur.
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OrioleDB beta7: Benchmarks
OrioleDB is a storage extension for PostgreSQL which uses PostgreSQL's pluggable storage system. Designed as a drop-in replacement for PostgreSQL's existing Heap storage, OrioleDB aims to overcome scalability bottlenecks and fully utilize modern hardware capabilities. By integrating seamlessly with PostgreSQL, it…
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Call me maybe: final thoughts
Previously in Jepsen , we discussed Riak . Now we’ll review and integrate our findings.
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From VNC to reverse shell
Personal websites are weird. We are mostly past the era of having them, as things like twitter and hosted blog services like Medium have taken them over, but I’m a hold out. I run both my own blog, and have a landing page on the apex domain since the server that hosts the blog (Google App Engine + Cloudflare) is…
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Building a Distributed Log from Scratch: Sketching a New System
In part four of this series we looked at some key trade-offs involved with a distributed log implementation and discussed a few lessons learned while building NATS Streaming. In this fifth and final installment, we’ll conclude by outlining the design for a new log-based system that draws from the previous entries in…