Show Notes
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.
“Reading' data out of a socket instead becomes a “notification” mechanism, where the kernel tells userspace where the data is.”
This kernel patch enables zero copy from the receive queue.
https://lore.kernel.org/io-uring/ZwW7_cRr_UpbEC-X@LQ3V64L9R2/T/
0:00 Intro 1:30 patch summary 7:00 Normal Connection Read (Kernel Copy) 12:40 Zero copy Read 15:30 Performance
More from The Backend Engineering Show with Hussein Nasser
I discuss the state of what will be happening in the coming few years and why I encourage the 3 of you who want to be elite engineers to keep their critical thinking sharp. To pause and think before prompting.
This is a conversation with Rashed Hasan, a PhD Candidate from the University of Nebraska. We chatted about databases, ORMs and how to use AI without losing yourself. Rashed pagehttps://www.mdrashedulhasan.me/homepage
I discuss loops engineering and how it will numb creative thinking and critical system design for engineers.
I like SQL but the standard should have included ways to hint instead of the abstraction of "let me do it for you"
In this episode I explore why you should take some time to examine the operation you are caching before doing so. And why caching is a cop-out