Every blog post that took off on Hacker News, ranked by the votes of its best submission. 6,947 posts.
I tried building FreeBSD AMIs for the 32-bit EC2 instance types the same way as I did the 64-bit instances — by defenestrating Windows AMIs — but there was a catch: They wouldn't boot. In fact, when I tried this six months ago, they not only didn't boot, but they didn't even produce any console output to help me…
Where does JIT-compiled code live? How does Ruby switch between bytecode and native execution? Why does TracePoint slow everything down? This post answers the JIT questions most Ruby developers have but rarely see explained.
Welp, this is a weird blog post! Very unexpectedly, we quickly invalidated some of the core hypothesis that make Zaplib work as a startup.
Update: Also read A brief update on NUMA and MySQL. The “swap insanity” problem, in brief When running MySQL on a large system (e.g., 64GB RAM and dual quad core CPUs) with a large Inno…
Introduction
This post will show you how to use D to write a bare-metal “Hello world” program that targets the RISC-V QEMU simulator. In a future blog post ( now available ) we’ll build on this to target actual hardware: the VisionFive 2 SBC. See blog-code for the final code from this post. For a more complex example, see…
When I first read Google’s RETRO paper, I was skeptical. Sure, RETRO models are 25x smaller than the competition, supposedly leading to HUGE savings in training and inference costs. But what about the new trillion token “retrieval database” they added to the architcture? Surely that must add back some computational…
Practical development throughout the evolution of Windows.
This post is the second in a three-part series about Cranelift . In the first post , I described the context around Cranelift and our project to replace its backend code-generation infrastructure, and detailed the instruction-selection problem and how we solve it. The remaining two posts will be deep-dives into some…
Modern processors execute instructions in parallel in many different ways: multi-core parallelism is just one of them. In particular, processor cores can have several outstanding memory access requests "in flight". This is often described as "memory-level parallelism". You can measure the level of memory-level…
Serverless containers and functions are widely used for deploying and managing software in the cloud. Their popularity is due to reduced cost of operations, improved utilization of hardware, and faster scaling than traditional deployment methods. The economics and scale of serverless applications…
Process isolation is a key component for containers. One of the key underlying mechanisms are namespaces. We will explore what they are, and how they work, to build our own isolated container and better understand each piece.
This post explains how to implement heap allocators from scratch. It presents and discusses different allocator designs, including bump allocation, li…
Asynchronous code does not require the rest of your code to be asynchronous. I can’t say the same for blocking code.
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
Hyphanet is a peer-to-peer platform for censorship-resistant communication and publishing.
An oft-repeated fact on programming forums these days is that a decent optimizing compiler will always beat a puny human's attempt at hand-written assembler. There are rare cases, like MPEG decoders, where making good use of the SIMD instructions can allow assembly to massively beat the compiler. But generally you'll…
Xôi Lạc TV là địa chỉ theo dõi bóng đá trực tuyến được người dùng đánh giá cao. Với hàng loạt giải đấu được phát sóng miễn phí cùng nhiều thông tin được cập nhật như lịch thi đấu, kết quả, bảng xếp hạng, tỷ số và những tin tức thể thao đáng chú ý.
Update: Two years later, I wrote a more detailed version of this article: My favorite bug: segfaults in Java (redux) .
This article contains a basic Nvidia CMP 170HX performance overview, a performance lockdown workaround, a hardware teardown, a watercooling installation guide, and a repair log.
Deep dive into the new DWARF-based stack unwinder using eBPF.
Systems engineering, Rust development, and Unix infrastructure by Till Wegmüller (@toasterson)
It’s been a long time since my last pizzabox post - over a year! There’s been a lot going on in my life but I’m excited that lately I’ve had a lot more free time , which means more time to explore the world of workstations and share with you!
