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.NET on Linux: What a Contrast
Almost five years ago I wrote a brief history about .net on non-Windows platforms . I stumbled over that article now and it resurfaced traumatic memories of navigating .net development on Linux and MacOS.
New
The latest blog posts to take off on Hacker News. 4,387 posts.
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How is a binary executable organized? Let's explore it (2014)
How is a binary executable organized? Let's explore it!
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SI Units for Request Rate
Request rate is the number of requests that arrive, or are serviced, or leave, during some period.
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XFaaS: Hyperscale and Low Cost Serverless Functions at Meta
This is one of several papers I’ll be reading from 2023’s Symposium on Operating Systems Principles (SOSP). If you’d like to receive regular updates as soon as they’re published, check out my newsletter or follow me on the site formerly known as Twitter . Enjoy!
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Build a simple LSM-Tree storage engine in a week
A hands-on introduction to database internals. Build an LSM storage engine with SSTables, compaction, WAL recovery, MVCC, and transactions.
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On the Costs of Syscalls (2021)
It's well known that syscalls are expensive. And that software mitigations against CPU bugs (such as Meltdown) even have made them more expensive. But how expensive are they really? To begin to answer this question I wrote a small micro-benchmark in order to measure the minimal costs of a syscall …
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Making Rust binaries smaller by default
Have you ever tried to compile a helloworld Rust program in --release mode? If yes, have you seen its binary size? Suffice to say, it’s not exactly small. Or at least it wasn’t small until recently. This post details how I found about the issue and my attempt to fix it in Cargo.
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Boeing whistleblower: MAX 9 production line has "enormous volume of defects"
A reader at respected airline industry site Leeham News offered a comment that suggests they have access to Boeing’s internal quality control systems, and shares details of what they saw regarding the Boeing 737 MAX 9 flown by Alaska Airlines that had a door plug detach inflight, causing rapid decompression of the…
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Unbloating the buffers
What is bufferbloat, why is it bad, and what to do about it
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Self-contained Linux applications with lone Lisp
Creating standalone Linux applications with lone.
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Investigating a vanishing BIOS on the Fujitsu Lifebook AH532
A few months ago, I got given a laptop with a very interesting condition. The BIOS setup menu was supposedly inaccessible, and nothing apart from the default boot option works. Time to investigate to see what is actually happening and what we can do about it.
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Systemd: Enable indefinite service restarts
When a service fails to start up enough times in a row, systemd gives up on it. On servers, this isn’t what I want — in general it’s helpful for automated recovery if daemons are restarted indefinitely. As long as you don’t have circular dependencies between services, all your services will eventually come up after…
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How DOS was able to use most of the 1 MB address space of the 8086
A tour on how DOS was able to use most of the 1 MB address space of the 8086
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Apple built iCloud to store billions of databases
Apple uses Cassandra and FoundationDB for CloudKit, their cloud backend service. We take a look into how exactly each is used within their cloud and the problems they've solved.
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Understanding x86_64 Paging
I’ve spent quite a lot of time messing with x86_64 page tables, understanding address translation is not easy and when I started learning about it I felt like a lot of the material out there on how it works was hard for me to wrap my head around. So in this blog post I am going to attempt to provide a kind of “what I…
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Passing nothing is surprisingly difficult
My day job is in browsers and cryptography , not compilers, yet I often find that I need to spend more of my time working through the semantics of programming languages than using them. This post discusses a thorny cross-language issue between C, C++, and Rust. In short:
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Std: Clamp generates less efficient assembly than std:min(max,std:max(min,v))
UPDATE: This blog post has been updated based on feedback from Reddit and Hacker News. HN discussion: https://news.ycombinator.com/item?id...
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Order/license chaos for VMware products after Broadcom takeover
[English]These are currently difficult times for customers and resellers of VMware products who want to reorder, extend licenses or simply activate product licenses. After the Broadcom takeover…
1103
The M2 is more advanced than it seemed
Apple’s M2 chip uses a newer version of the CPU core instruction set. This increases its capability, thus how well it will cope with future apps and macOS, compared with the M1.
1104
How virtualisation came to Apple Silicon Macs
From Hypervisor APIs in OS X 10.10 Yosemite in 2014, through early VirtIO kernel extensions in Mojave in 2018, and Arm hypervisor support in Big Sur.
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Building a baseline JIT for Lua automatically (2023)
This is the Part 2 of a series. Feel free to read the prequel for more context: Building the fastest Lua interpreter automatically Building a good VM for a dynamic language takes a ton of engineerin
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epoll: The API that powers the modern internet (2022)
Linux's epoll API solved the C10K problem, enabling fast and afforable Internet services.
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The memory remains: Permanent memory with systemd and a Rust allocator
A Rust object that survives program restart thanks to Rust allocators, systemd's file descriptor store, and syscall memfd_create.
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"I Contribute to the Windows Kernel. We Are Slower" (2013)
I was explaining on Hacker News why Windows fell behind Linux in terms of operating system kernel performance and innovation. And out of nowhere an anonymous...
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Visualizing Ext4
What does ext4 look like?