Confessions of a Code Addict

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Connecting CPython's GC Internals to Real-World Performance
Learn how the knowledge of CPython internals translate into performance insights for your code
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Abhinav Upadhyay

September 2024

Recording: Six Key Performance Engineering Lessons from 1BRC
Last night we did this live session on performance engineering.
 • 
Abhinav Upadhyay
2:31:20
Celebrating 2^13 Subscribers & My Birthday
I started this Substack on 23rd April, 2023 from 0 subscribers with a dream of writing deeply technical articles and making a living.
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Abhinav Upadhyay
5

August 2024

The Design & Implementation of the CPython Virtual Machine
A deep dive into CPython's bytecode instruction format and execution engine internals
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Abhinav Upadhyay
CPython Internals: What Happens Before Bytecode Execution Starts
Learn about runtime initialization, parsing and compilation of the Python code into bytecode leading to execution on the virtual machine
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Abhinav Upadhyay
(Live Session) Performance Thinking: Six Key Lessons from 1BRC
Over the past year as I’ve dived deep into systems programming, I’ve developed a strong appreciation for the finer details that drive performance…
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Abhinav Upadhyay
Are Function Calls Still Slow in Python? An Analysis of Recent Optimizations in CPython
How costly it is to call functions and builtins in your python code? Does inlining help? How have the recent CPython releases improved performance in…
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Abhinav Upadhyay
2

July 2024

Two Threads, One Core: How Simultaneous Multithreading Works Under the Hood
Ever wondered how your CPU handles two tasks at once? Discover the magic of Simultaneous Multithreading and see what’s really going on inside.
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Abhinav Upadhyay
Recording: How Hyper-Threading Works — A Microarchitectural Perspective
Last weekend, we did a live session on the architecture of the hyper-threading (simultaneous multithreading) implementation in Intel’s x86 processors.
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Abhinav Upadhyay
4
1:09:29

June 2024

Substack has Failed Indian Creators
Dear subscribers, This is not my usual deep technical post, it’s going to be a rant about the problems I (and many other Indian writers) have faced in…
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Abhinav Upadhyay
42
All Set! Looking Under the Hood of Python's Set Data Structure
Learn everything about hash tables, collision handling, and performance optimization
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Abhinav Upadhyay
Live Session: How Hyper-Threading (Simultaneous Multithreading) Works — A Microarchitectural Perspective
Learn about the microarchitecture implementation of SMT & its performance implications
 • 
Abhinav Upadhyay
© 2024 Abhinav Upadhyay
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