How many kernel calls in NodeJS vs Bun vs Python vs native C
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Description
Fundamentals of Operating Systems Course
https://oscourse.win
In this video I use strace a performance tool that measures how many system calls does a process makes. We compare a simple task of reading from a file, and we run the program in different runtimes, namely nodejs, buns , python and native C.
We discuss the cost of kernel mode switches, system calls and pe
0:00 Intro
5:00 Code Explanation
6:30 Python
9:30 NodeJS
12:30 BunJS
13:12 C
16:00 Summary
More Episodes
You get better as a software engineer when you go through these stages.
0:00 Intro
1:15 Understand a technology
7:07 Articulate how it works
15:30 Understand its’ limitations
19:48 Try to build something better
27:45 Realize what you built also has limitations
32:48 Appreciate the...
Published 11/01/24
Published 11/01/24
Fundamentals of Operating Systems Course
https://oscourse.win
Very clever! We often call read/rcv system call to read requests from a connection, this copies data from kernel receive buffer to user space which has a cost.
This new patch changes this to allow zero copy with notification.
...
Published 10/25/24
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