Jim Huang

"A hacker, a lecturer, a father" // Adjunct faculty at @NCKU_official

[Jim Huang @jserv]

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.
https://t.co/n8PKgCYxiO

[Anthony Bonato @Anthony_Bonato]

"I hate LaTeX."
Writing math before LaTeX:

[Computer ♥ Records @ComputerLove_]

This is what ordering Pizza Hut online looked like in 1994

[Java @java]

In 1995, a small team of engineers unveiled a new programming language designed for flexibility, portability, and robustness. That language was Java. And three decades later, it remains one of the most influential technologies in the software world.

Thank you for helping us celebrate #30YearsOfJava this past year. We look forward to many, many more years of pushing the boundaries of innovation and the pursuit of developer excellence. ❤️

[messed up computers @messeduppcs]

Sizes of subatomic particles

[Brian Roemmele @BrianRoemmele]

Cray-1, 1978. The device you are using now is many times more capable.

[NVIDIA @nvidia]

It's not a trip to Taipei without a night market stop. 🍧📸🤳

[Linuxiac @linuxiac]

z386 is an open-source 80386-class FPGA CPU core that uses recovered Intel 386 microcode to run DOS and protected-mode software.
https://t.co/4qfPfjy0Vi

#OpenSource #i386

[TechyQuicky @TechieShowvi]

macOS is officially UNIX-certified because Apple pays The Open Group, runs the full compliance tests, and maintains it for each release. Linux isn’t, mainly due to high certification costs, extreme fragmentation across distros, and no real need since it’s already Unix-like enough for practically everything. It’s basically just a paid badge Apple cares about.

[Jim Huang @jserv]

在飛機上看「哈姆奈特」，億及高中時和暗戀的女生一起看「大河戀」。整場電影，我的目光始終停在她身上。散場後，她認真地和我討論劇情，還說這一定是我喜歡的電影，我只好否認。後來我反覆觀賞才理解片中強調「能否真正理解自己所愛的人」

[Omkar @psomkar1]

He is a legend for a reason !!!

[Jim Huang @jserv]

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.

[Computer ♥ Records @ComputerLove_]

In 1996, Nokia launched the first mobile phone with dial-up internet:

[Zuhaitz @zuhaitz_dev]

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).

[Math Files @Math_files]

The Fish Function

[Jim Huang @jserv]

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？

[Jim Huang @jserv]

"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?

[Abhinav Upadhyay @abhi9u]

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.