Confessions of a Code Addict

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A Software Engineer's Guide to Reading Research Papers
My personal framework for reading research papers
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Abhinav Upadhyay
Launching Live Courses on Systems Programming
Modern software development has created a paradox: we build increasingly complex systems, yet fewer engineers understand how these systems work under…
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Abhinav Upadhyay
Linux Context Switches: The Truth About TLB Flushes
Watch now (22 mins) | Is the TLB really flushed during context switches?
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Abhinav Upadhyay
21:34
Live Session: How Modern CPUs Execute Your Code: A Deep Dive into Performance
I hope you enjoyed the recent article on how Unix spell was designed to lookup a 250kB dictionary on a 64kB machine. Writing it wore me down.
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Abhinav Upadhyay
How Unix Spell Ran in 64kB RAM
How do you fit a dictionary in 64kb RAM? Unix engineers solved it with clever data structures and compression tricks. Here's the fascinating story…
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Abhinav Upadhyay

December 2024

Linux Context Switching Internals: Part 1 - Process State and Memory
How does the Linux kernel represent processes and their state: A breakdown of task_struct and mm_struct
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Abhinav Upadhyay
Reflections on 2024 and Exciting Plans for 2025
Looking back at what we accomplished in 2024, and plans for 2025
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Abhinav Upadhyay
16
Recording: Live Coding a Bytecode Compiler for Python
Yesterday we concluded the live session on live coding a bytecode compiler and interpreter (VM) for a tiny subset of Python in Python. Even though I…
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Abhinav Upadhyay
2:57:12
Context Switching and Performance: What Every Developer Should Know
Understand how context switching affects CPU registers, caches, TLB, and pipeline performance, and learn strategies to mitigate performance penalties
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Abhinav Upadhyay
2
Live Session: Live Coding a Bytecode Interpreter for Python
I will be redoing this session because the previous one had to be cancelled.
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Abhinav Upadhyay

November 2024

© 2025 Abhinav Upadhyay
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