Jim Huang

The Linux Kernel Module Programming Guide (#LKMPG) got 5000+ stars on GitHub. Thank all the contributors and promoters. We are moving forward to Linux v6.x support. Rust LKM examples will appear later. github.com/sysprog21/lkmpg

He is a legend for a reason !!!

The Intel 386EX, running at 24 MHz, was a highly integrated embedded variant of the 80386SX architecture used in the Nokia 9000 Communicator, which supported internet connectivity via GSM circuit-switched dial-up data.

This is an interesting discussion, C is not Turing complete (if we are really pedantic). The main issue is that in ISO C, the memory is finite, and bounded not just in practice but also in theory. We can derive from these points from the standard (and a few more).

This is how we used to make 3D graphics for the NES! Cobra Triangle, Captain Skyhawk, Who Framed Roger Rabbit?, Solar Jetman and RC Pro-Am all used this technique! It took time, but it was worth it! #gamedev #videogames #art #nes

The Fish Function

將「無人飛行載具」簡稱成「無人機」，容易讓人誤會。現代許多機器都能在「無人」狀態下正常運作，「跳蛋」一類的按摩裝置，同樣也是在無人操作下持續運轉，於是它是否也該算某種「無人機」呢？ 可能問題不在「無人」，而是大家對「機」的想像有偏見？

"Computer" once meant a human. Later, the term referred to machines, and humans became "programmers." If programming also shifts to machines, what will human programmers be called next?

Before jumping into books like DDIA or Database Internals, it helps to understand the systems layer these designs are built on. A lot of the design of such data-intensive systems is based on virtual memory: page tables, page faults, mmap, the page cache, swapping, NUMA placement, TLBs, and the tradeoffs between what the OS wants and what the database wants. My latest article is a ~25,000-word mini-book on virtual memory. It starts from first principles and goes all the way down to advanced topics like NUMA placement and performance debugging with tools like perf and /proc. I also wrote it differently: as a dialogue between a user-space process and the kernel. Most treatments of virtual memory are dry and fact-heavy. I wanted this one to feel more like a story, while still being technically deep. Link below.

C10K problem in 1999 a software engineer named Dan Kegel wrote an article that changed how web servers are built the question was simple how do you handle 10,000 concurrent connections on one machine at the time Apache used one thread per connection, each thread needed memory for its stack around 8MB and 10,000 connections meant around 80GB of RAM just for stacks the system spent more time switching threads than doing real work servers crashed long before reaching 10k connections this became known as the C10K problem

How and why numbers are named...

On May 14, 1991, a team made up of Tim Berners-Lee, Henrik Frystyk Nielsen and Nicola Pellow designed a simple browser called Line Mode Browser (The Libwww Line Mode Browser). This was the second browser ever made for the World Wide Web. #InternetHistory

Fast Fourier Analysis.

Imagine a 14th-century "universal" prayer The 1348 Stele of Sulaiman from #Dunhuang features the Buddhist mantra "Om Mani Padme Hum" in 6 scripts: Sanskrit, Tibetan, Old Uyghur, 'Phags-pa, Tangut, & Chinese A stunning relic of Yuan Dynasty multiculturalism!

I released MazuNIX on Mazu’s birthday. Unlike many educational operating systems that avoid SMP and real-time (RT) topics, Mazu delivers SMP, multicore RT scheduling, and practical POSIX Threads support. Full source code is available: github.com/MazuNIX/mazu

“Cuando empiezas a caminar por el camino, el camino aparece.” - Rumi

Unix values stability and consistency; Linux values scalability and flexibility.

I am building a cellphone prototype based on Linux no-MMU and #LVGL, demonstrating a modern UI and a fully functional software stack within a total memory footprint of under 8 MB SRAM.

30 years ago Today, Linus Torvalds decides to adopt Tux the penguin as a mascot for the Linux operating system after being nibbled by a little penguin on a visit to the National Zoo & Aquarium, Canberra, Australia.