Re: regression/bisected/6.9 commit 587d67fd929ad89801bcc429675bda90d53f6592 decrease 30% of gaming performance

[Mikhail Gavrilov <mikhail.v.gavrilov@xxxxxxxxx>]

On Tue, Apr 30, 2024 at 5:12 PM Takashi Iwai <tiwai@xxxxxxx> wrote:
> Where and how...?  That important piece is missing in you info...
> And, it's likely a false-positive detection by lockdep.
>
> When you disable lockdep, does it still show any performance down?

Of course without "lockdep" performance is even better than the commit
587d67fd929a just reverted.
- mainline kernel without changes with lockdep - 13244 [1]
- mainline kernel with reverted 587d67fd929a with lockdep - 19218 [2]
- mainline kernel without changes without lockdep - 22440 [3]

I think I get what you're saying: after a false-positive detection,
lockdep is partially disabled. Yes?
How do I understand that lockdep has partially turned off?
I would expect to see such a message in the kernel log " INFO: lockdep
is turned off."
But in my case this message didn't appear.
In any case, sorry for wasting your time.

[1] https://postimg.cc/G4NPHMyk
[2] https://postimg.cc/1n0D7sYH
[3] https://postimg.cc/nMYHWRcF

-- 
Best Regards,
Mike Gavrilov.