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FS#76230 - [linux] 6.0.2 major performance slowdowns

Attached to Project: Arch Linux
Opened by jest (jest) - Monday, 17 October 2022, 16:14 GMT
Last edited by Toolybird (Toolybird) - Saturday, 29 October 2022, 00:54 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To Tobias Powalowski (tpowa)
Jan Alexander Steffens (heftig)
David Runge (dvzrv)
Architecture x86_64
Severity Medium
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No


System responsiveness slows to a crawl on the latest kernel(6.0.2) while kernel(5.18) is pretty smooth.. Laggy and chuggy rendering, slow startup of all applications(about 400ms more?). This is namely on x11, when I run sway(wayland) everything seems to be more smooth, but it seems changing kernels drastically effects performance on x11(i3). OBS can only record at less than 10 FPS while 5.18 kernel can do the full 30-60fps, the list goes on. here's a video to showcase how bad it is.

My hardware is:
CPU:Ryzen 5 1600
GPU: rx 580

Steps to reproduce:
Upgrade to 6.0.2 kernel
This task depends upon

Closed by  Toolybird (Toolybird)
Saturday, 29 October 2022, 00:54 GMT
Reason for closing:  Fixed
Additional comments about closing:  linux 6.0.5.arch1-1
Comment by jest (jest) - Monday, 17 October 2022, 16:40 GMT
UPDATE: So I narrowed which at which kernel started introducing bad responsiveness and it started at 5.19.12! Version 5.19.11 runs very smoothly. Seems related to here:
Comment by Morten Linderud (Foxboron) - Monday, 17 October 2022, 16:49 GMT
Please reboot your computer
Comment by jest (jest) - Monday, 17 October 2022, 16:58 GMT
@Morten Linderud I did reboot my computer, I just editted out the reboot. I tested 7 kernels rebooting after each downgrade and it seems 5.19.12 is when it starts happening so I will be sticking with 5.19.11 for now.
Comment by jest (jest) - Friday, 28 October 2022, 22:01 GMT

This is fixed in the latest 6.0.5. It effects 5.19.12 to 6.0.2! Requesting for closure now.