Re: [PATCHv6 0/2] *** Detect interrupt storm in softlockup ***

[Petr Mladek]

On Thu 2024-02-08 20:54:24, Bitao Hu wrote:
> Hi, guys.
> I have implemented a low-overhead method for detecting interrupt
> storm in softlockup. Please review it, all comments are welcome.

I like this work.

I wonder if you might be interested also in reporting problems
when soft IRQs are offloaded to the "ksoftirqd/X" kthreads
for too long.

The kthreads are processes with normal priority. As a result,
offloading soft IRQs to kthreads might cause huge difference
on loaded systems.

I have seen several problems when a flood of softIRQs triggered
offloading them. And it caused several second delays on networking
interfaces.

Best Regards,
Petr