Re: EXTERNAL: Re: hundred percent cpu load

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On 8/20/20 6:47 PM, Chris Murphy wrote:
> As tedious as it is, my suggestion is kernel bisect.
>
> Various strategies abound. I'd probably go for course to fine
> granularity: start with Fedora Live ISOs, and see clearly where it
> does and doesn't happen. It sounds like the problem manifests quickly
> so you don't need to reinstall or compile. Once you've got a good vs
> bad kernel based on ISOs, you probably will need to compile because
> koji kernels aren't kept around more than (eek! I don't know but maybe
> a couple months?). I suggest not bothering with stable updates. Just
> work on the mainline kernel git. 5.3.0 good, 5.7.0 bad.
>
> make localmodconfig will significantly reduce the cost of compile time
>
> If it's not fixed already in 5.8 or 5.9, easy to test because both are
> in koji, I wouldn't assume it's just going to get fixed somehow.
> Someone would have to do a bisect and report it. In very rare cases if
> it's not fixed soonish (a kernel release or two) insist on lkml that
> the change that caused the regression is reverted. Of course, if it's
> hardware related, you won't likely find a good kernel.
>
> --
> Chris Murphy

Thanks for your time & suggestions. 
I have already started trying older live ISO's just don't have but one
right now but I'll find some more

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