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Security researchers identify new malware targeting Linux
ESET researchers analyzed previously unknown Linux backdoors that are connected to known Windows malware used by the China-aligned Gelsemium group, as well as to Project Wood.
New
The latest blog posts to take off on Hacker News. 569 posts.
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How oxide cuts data center power consumption in half
A rack-scale design that drives data center power efficiency.
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Does the Internet Route Around Damage? – Baltic Sea Cable Cuts
This week's Internet cable cuts in the Baltic Sea have been widely reported, even as attempts to understand their cause and impact continue. We turn to RIPE Atlas to provide a preliminary analysis of these events and ask to what extent the Internet in the region has been resilient to them.
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Pipe Viewer – A Unix Utility You Should Know About
Hi all! I'm starting a new article series here. This one is going to be about Unix utilities that you should know about. The articles will discuss one Unix program at a time. I'll try to write a good introduction to the tool and give as many examples as I can think of. The first post in this series is going to be…
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Using gRPC for (local) inter-process communication (2021)
Using a full-featured RPC framework for IPC seems like overkill when the processes run on the same machine. However, if your project anyway exposes RPCs for public APIs or would benefit from a schema-based serialisation layer it makes sense to use only one tool that combines these—also for IPC. Microservices for…
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Using Erlang hot code updates
One of the Erlang ecosystem's spiciest nerd snipes are hot code updates. Because it can do it. In ways that almost no other runtime can. I use Elixir which builds on Erlang and has the same capabilities.
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A Walk with LuaJIT
How we scrape callstack information from the LuaJIT engine for profiling
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Bit-twiddling optimizations in Zed's Rope
From the Zed Blog: In this episode of Zed Decoded, Thorsten and Antonio walk through the performance optimizations Antonio when working on Zed's Rope data structure before they then pair on adding more optimizations
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Extending the context length to 1M tokens
API Documentation (Chinese) HuggingFace Demo ModelScope Demo Introduction After the release of Qwen2.5, we heard the community’s demand for processing longer contexts. In recent months, we have made many optimizations for the model capabilities and inference performance of extremely long context. Today, we are proud…
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Playground Wisdom: Threads Beat Async/Await
Musings about async await again and why I think virtual threads
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Computer Networking Fundamentals – Learning Series (2023)
This colorful series walks you through the networking basics in just a few thousand words! It also offers hands-on labs to practice the obtained knowledge.
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ChibiHash: Small, Fast 64 bit hash function
Update Nov 30: I've added a version 2, which makes the benchmarks and design overview section in this article outdated. See the github repo for updated benchmarks.
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Why did Windows 95 setup use three operating systems?
Simplifying the problem to an earlier problem.
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M4 Macs can't virtualise older macOS
A bug, most probably in the early part of kernel boot in guest macOS, prevents M4 Macs virtualising macOS prior to 13.4.
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Speeding up the Rust edit-build-run cycle
There are two main aspects to compile times that matter to developers. Cold build times, when building from scratch and warm build times when you’ve already built and you’re rebuilding following an edit. This article focuses on warm build times, which for rapid iteration during development is what generally matters…
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Waiting for many things at once with io_uring
When doing systems programming we often need to wait for something to happen. Common examples might be waiting for some data to come through a socket or waiting on a lock. We also often want to wait on any of several conditions to become true. A web server might be handling many sockets at once, waiting for any number…
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Abusing Ubuntu 24.04 features for root privilege escalation
With the recent release of Ubuntu 24.04, we at Snyk Security Labs thought it would be interesting to examine the latest version of this Linux distribution to see if we could find any interesting privilege escalation vulnerabilities.
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3600 MHz Raspberry Pi 5 with Liquid Nitrogen
I tried everything but couldn’t turn this Raspberry Pi 5 into the World’s Fastest Pi 5. Unfortunately, we can’t quite claim that title.
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M4 Mac mini's efficiency
I had to pause some of my work getting a current-gen AMD graphics card running on the Pi 5 and testing a 192-core AmpereOne server to quickly post on the M4's efficiency. I expected M4 to be better than M1/M2 (I haven't personally tested M3), and I hoped it would at least match the previous total-system-power…
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Jepsen: Bufstream 0.1
2024-11-13 : An earlier version of this report asserted that consumers with auto-commit enabled could lose data by automatically committing offsets returned by the most recent poll. This claim was based in part on Confluent’s documentation , which states:
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The Soul of an Old Machine: Revisiting the Timeless von Neumann Architecture
Revisiting the timeless von Neumann Architecture
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Optimizing a WebGPU Matmul Kernel for 1 TFLOP
Building Surfgrad, a high-performant, WebGPU-powered autograd library
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Way too many ways to wait on a child process with a timeout
I often need to launch a program in the terminal in a retry loop. Maybe because it's flaky, or because it tries to contact a remote service that is not available. A few scenarios:
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The number given as % CPU in Activity Monitor
One of the most common reasons for opening Activity Monitor is to check the % CPU of processes that might be running out of control. How accurate are those figures, though, and should you believe t…
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SVDQuant: 4-Bit Quantization Powers 12B Flux on a 16GB 4090 GPU with 3x Speedup
A new post-training training quantization paradigm for diffusion models, which quantize both the weights and activations of FLUX.1 to 4 bits, achieving 3.5× memory and 8.7× latency reduction on a 16GB laptop 4090 GPU. Code: https://www.github.com/mit-han-lab/nunchaku
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The case of a program that crashed on its first instruction
Didn't even make it out of the gate.
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We built a self-healing system to survive a concurrency bug at Netflix
Our CPUs were dying, the bug was temporarily un-fixable, and we had no viable path forward. Here's how we managed to survive.
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QNX is now free for anything non-commercial, plus there's an RPi image
QNX is changing the game for engineers and software developers, providing free access to QNX software and resources for non-commercial use.