2281
Home truths about macOS
True or false? Apple supports macOS for three years. Apple’s security updates are sufficient. New versions of macOS are full of bugs. It’s safer to delay upgrading.
New
The latest blog posts to take off on Hacker News. 6,947 posts.
2282
The Linux scheduler: A decade of wasted cores (2016)
The Linux Scheduler: a Decade of Wasted Cores – Lozi et al. 2016 This is the first in a series of papers from EuroSys 2016. There are three strands here: first of all, there’s some grea…
2283
Is CBL-Mariner going to become Microsoft Linux?
Microsoft is increasingly standardizing on its in-house CBL-Mariner Linux distribution. Is this Microsoft Linux?
2284
Linux boot partitions and how to set them up
Posts and writings by Lennart Poettering
2285
Testing Microsoft's Windows Dev Kit 2023
Last week Microsoft started selling their $599 Windows Dev Kit 2023, formerly known as 'Project Volterra'. I got my hands on one after a little bit of a shipping delay, and promptly started tearing it down to see what's inside. You can click here to browse the entire Twitter thread where I posted pictures of the box…
2286
Comparing TCP and QUIC
There is a common view out there that the QUIC transport protocol (RFC 9000) is just another refinement to the original TCP transport protocol [ 1 ] [ 2 ]. I find it hard to agree with this sentiment, and for me QUIC represents a significant shift in the set of transport capabilities available to applications in terms…
2287
Cache Associativity
Consider a strided incrementing loop over an array of size $N=2^{21}$ with a fixed step size of 256:
2288
9front “The Golden Age of Ballooning” Released
Multiple installation media are provided for PC, Raspberry Pi, and MNT Reform. For PC, burn an .iso file to CD, or dd it directly to USB media. For Raspberry Pi or MNT Reform, dd an .img file directly to sdcard.
2289
If one GUI's not enough for your SPARC workstation, try four
Who needs a jack-o-lantern when you've got a bright orange gas plasma display? This is a 1990 Solbourne Computer S3000 all-in-one workst...
2290
Linker, can you spare a meg? (2021)
Tailscale on iOS runs as a special kind of app, a Network Extension. This lets us run in the background, so we can secure traffic from all of your applications, without them having to change anything. But with this power comes a memory straightjacket. Normal iOS apps can use 5GB or so of memory before iOS kills them…
2291
Compilers and IRs: LLVM IR, SPIR-V, and MLIR
Overall discussion on compilers and IRs (LLVM IR, SPIR-V, and MLIR): why they are in their current manner and how they would evolve
2292
The Talos II, Blackbird POWER9 systems support tagged memory
Nowadays, there is increasing interest in adding tagged memory functionality to CPU architectures. Such architectures associate one or more tag bits with each quantum of a system's memory. There are many motivations for this ability to associate “metadata” with individual memory words, but one of the most clear is the…
2293
Untangling Lifetimes: The Arena Allocator
Making performant dynamic manual memory management in C feel almost like garbage collection.
2294
Linux 6.1 on NanoPi R4S – On fixing SD-card support, Heisenbugs and Rabbit Holes
This little ARM64 single-board computer dragged me into the world of device trees, voltage regulators, and one of the worst Heisenbugs I encountered so far.
2295
Bringing a dynamic environment to C: My linker project
I'm writing a linker. It's an unusual linker. It's focus is not on producing executable files. Instead, its focus is to facilitate rapid iteration on a program without having to re-link or re-open it after making changes. It is hot-loading of code at an object-file granularity.
2296
Why I use Jellyfin for my home media library
The blog post Streaming services lost the plot detailed how streaming services have become the thing they were made to destroy. Like cable networks and satellite companies before, they're raising rates (at a rate higher than inflation), stuffing their content libraries with filler that's not even worth the bandwidth…
2297
Towards the next generation of XNU memory safety: kalloc_type
Improving software memory safety is a key security objective for engineering teams across the industry. Here we begin a journey into the XNU kernel at the core of iOS and explore the intricate work our engineering teams have done to harden the memory allocator and make our software much more difficult to exploit.
2298
Writing systemd units that stop gracefully before shutdown
systemd Shutdown Units
2299
Time is an illusion, Unix time doubly so
Unix counts time as seconds since the epoch. Seems straight forward. What could possibly go wrong?
2300
Brave New Trusted Boot World
Posts and writings by Lennart Poettering
2301
2302
Multi-Kernel Drifting
Using truss, dtrace & ctfconvert to figure out a faulty illumos kernel module.
2303
Rust in the Linux Kernel: Just the Beginning
Support for using Rust in the Linux Kernel was recently merged by Linus Torvalds. This is important because Rust is memory safe, meaning that code written in Rust does not suffer from things like buffer overflows, use-after-free, and other memory management vulnerabilities that plague software written in unsafe…
2304
How the clipboard works
Reading how copy-paste works from the Wayland specification is non-trivial unless you understand a lot of how desktop computing works and Wayland internal. It took me quite a while to figure it all out, though once you get there, it seems quite obvious.
2305
The cult of dd (2017)
You'll often see instructions for creating and using disk images on Unix systems making use of the dd command. This is a strange program of [obscure provenance](https://en.wikipedia.org/wiki/Dd_(Unix)) that somehow, still manages to survive in the 21st century.
2306
Debugging C with Cosmopolitan Libc
Gautham's Blog
2307
Maintaining sufficient free space with ZFS
TLDR: ZFS free-space reporting is a lagging indicator. Background I use Proxmox VM server backed by a ZFS array of hard drives for various personal infrastructure. I also have security cameras that upload motion-triggered videos to my server (via FTP!). Problem Description I would like to use 90% of my available space…
2308
How Rust 1.64 became faster on Windows
If you are a Rust developer you have most likely celebrated the news that the version 1.64 released on 22/09/2022 is 10-20% faster on…
2309
Curl doesn't add libproxy due to its quality issues
curl, along with every other Internet tool with aspirations, supports proxies. A proxy is a (usually known) middle-man in a network operation; instead of going directly to the remote end server, the client goes via a proxy. curl has supported proxies since the day it was born. Which proxy? Applications that do…
2310
Linux: What Can You Epoll?
On Linux what can you turn into a file descriptor and then monitor with epoll?