4351
Hotswapping Haskell
Bluesky: @simonmar.bsky.social Github: simonmar Email: marlowsd@gmail.com LinkedIn: Simon Marlow
Topics /
Systems & Performance
The most popular blog posts about systems & performance on Hacker News. 6,942 posts.
4352
4353
4354
4355
4356
Visualising the .NET Garbage Collector
As part of an ongoing attempt to learn more about how a real-life Garbage Collector (GC) works (see part 1) and after being inspired by Julia Evans’ excellent post gzip + poetry = awesome I spent a some time writing a tool to enable a live visualisation of the .NET GC in action.
4357
Translating an ARM iOS App to Intel macOS Using Bitcode
When Apple introduced Bitcode and made it mandatory on watchOS and tvOS, they kinda hand-waved away questions about why it existed, with nebulous claims about it being useful to tune-up binaries by utilizing the latest compiler improvements.
4358
4359
A Gentle Introduction to Multithreading
Approaching the world of concurrency, one step at a time.
4360
Using TLA+ to Understand Xen Vchan
The vchan protocol is used to stream data between virtual machines on a Xen host without needing any locks. It is largely undocumented. The TLA …
4361
FlashAttention: Fast Transformer training with long sequences
Transformers have grown deeper and wider, but training them on long sequences remains difficult. The attention layer at their heart is the compute and memory bottleneck: doubling the sequence length would quadruple the runtime and memory requirements.
4362
Visualising the Go garbage collector
gcvis is a simple way of visualising the operation of the garbage collector within a Go process. Here is a screenshot of it in operation. The rest of this article explores how gcvis works and how to interpret its results.
4363
4364
4365
4366
What FreeBSD can offer compared to other operating systems (2020)
I really wanted to make this article short … but I failed miserably. At least I tried to organize it well so one may get back to it after ‘some’ reading because its not a short le…
4367
ECC and DDR5
Hamming Codes ECC RAM corrects errors that occur in memory before it gets to the CPU. The most common form of ECC is the Hamming Code [1] which when it has R redundant bits can correct single bit e…
4368
4369
Microsoft: No Driver Updates Allowed for Win7 and Win8
Microsoft has announced that it is ending the ability to cross-sign drivers, effective 1 July 2021. This will effectively make it impossible to release new or updated drivers for Windows 7, Windows…
4370
4371
4372
Linux Kernel Ksmbd Use-After-Free Remote Code Execution Vulnerability
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability, but only systems with ksmbd enabled are vulnerable.
4373
Anatomy of a Ceph meltdown
Last week, the server farm of our LMU Student Council had a major downtime over almost five days. As part of the administrator team there, I’d like to publish this post mortem to share our experiences and lessons learned to avoid situations like this in the future.
4374
Faster Than Dijkstra?
Does a new algorithm that improves on Dijkstra'a classic one actually deliver a practical benefit for networking?
4375
Overhead of Python asyncio tasks
Textual is a TUI framework for Python, inspired by modern web development.
4376
4377
The Configuration Complexity Curse
Why managing configuration has become so complex and how data configuration languages like CUE offer a path forward.
4378
Containers vs. pods – taking a deeper look
Can a Kubernetes Pod be created with plain Docker commands? Learn the difference between Containers and Pods by exploring how they are implemented under the hood.
4379
What does a PGP signature on a Git commit prove?
With git, a cryptographic signature on a commit provides strong integrity guarantees of the entire history of that branch going backwards...
4380
PC Engine CPU
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.