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Debugging C with Cosmopolitan Libc
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The latest blog posts to take off on Hacker News. 4,388 posts.
1592
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…
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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…
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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…
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Linux: What Can You Epoll?
On Linux what can you turn into a file descriptor and then monitor with epoll?
1596
RISC in 2022
You are seeing this because the administrator of this website has set up Anubis to protect the server against the scourge of AI companies aggressively scraping websites . This can and does cause downtime for the websites, which makes their resources inaccessible for everyone.
1597
The FreeBSD/Firecracker Platform
I started working on this on June 20th mainly out of curiosity: I had heard that Firecracker had PVH boot support (which was in fact mistaken!) and I knew that FreeBSD could boot in PVH mode from Xen, so I wondered just how hard it would be to get FreeBSD up and running. Not impossible, as it turned out, but a bit…
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How to build software like an SRE
I’ve been doing this “reliability” stuff for a little while now (~5 years), at companies ranging from about 20 developers to over 2,000. I’ve always cared primarily about the software elements I describe as living “outside” the application – like, how does it get its configuration? What kinds of instances does it run…
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Ryzen 7000 amdgpu boot hang
So you decided to build a brand new system using all the latest and coolest tech, so you buy a Ryzen 7000 series Zen 4 CPU, like the Ryzen 7700X that I picked, with a new mother board and DDR5 memory
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Building a database buffer pool in Zig using io_uring's new fixed-buffer mode
In this post, we will explore how to build a high-performance database buffer pool in Zig using io_uring's new fixed-buffer mode.
1602
We're moving away from swap partitions on our Linux servers
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…
1603
Digging into a QEMU problem of slow data copying
The work on QEMU and this post was paid for by Determinate Systems, and the post was co-published on the Determinate Systems blog .
1604
Verifying distributed systems with Isabelle/HOL
We use distributed systems every day in the form of internet services. These systems are very useful, but also challenging to implement because networks are unpredictable. Whenever you send a message over the network, it is likely to arrive quite quickly, but it’s possible that it might be delayed for a long time, or…
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Linux NILFS file system: automatic continuous snapshots
In this article, I present the Linux file system NILFS and its automatic continuous snapshoting system.
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Going where BeOS NetPositive hasn't gone before: NetPositive+
BeOS browser : TLS apocalypse Won't keep it off line. (How do you pronounce BeOS ?) This is a real 133MHz BeBox running otherwise s...
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Partitioning in Postgres, 2022 Edition
Tracking improvements to Postgres partitioning since 2017. In just five years it’s gone from a non-feature to a very good one.
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Why modern software is slow
I apologize for this title because there are many things that can make modern software slow. Blindly applying one explanation without a bit of investigation is the software equivalent of a cargo cu…
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An upside-down backup strategy
An Upside-Down Backup Strategy I have a strange way of doing backups these days. When I save something, the master copy is in the cloud. If a file exists only on my local drive, it's not safe....
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Isolates, microVMs, and WebAssembly
I’ve been thinking about WebAssembly a lot lately.
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The Sad State of Debug Performance in C++
By now it should be (hopefully) widely known that the term “zero-cost abstractions” is a misnomer. Although, to be clear, it's more of an unfortunate name.
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We Need New Motherboards Before GPUs Collapse Under Their Own Gravity
You can’t have a 4-slot GPU. You just can’t. We have finally left sanity behind, with nvidia’s 4000 series cards yielding a “clown car” of absurd GPU designs, as GamersNexus put it. These cards are so huge they need “GPU Support Sticks”, which are an actual real thing now. The fact that we insist on relegating the GPU…
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System memory allocator free operation zeroes out deallocated blocks in iOS 16
The system memory allocator free operation zeroes out all deallocated blocks in iOS 16.1 beta or later. Invalid accesses to free memory might result in new crashes or corruption, including NULL -pointer dereferences and non-zero memory being returned from calloc .
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Lockfree Algorithms (2010)
Seru88 adalah situs iGaming resmi dengan sistem RNG transparan, pilihan permainan lengkap, akses mobile dan desktop, serta layanan pelanggan 24/7.
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An X11 apologist tries Wayland
I think it’s only fair to call me an X apologist. I get incredibly frustrated when people talk about dropping support for X11. I fight back against the notion that some day X11 will be dead and unmaintained, a curiosity of a time before. I’ve spoken to people in my circles at-length about the accessibility tools that…