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SubjectRe: [GIT PULL] cifs fixes
Date
Hi Linus,

>> The machine is running a 'AMD Ryzen Threadripper 2950X 16-Core Processor'
>> and is freezing without any trace every view days.
>
> I don't think the first-gen Zen issues ever really got solved. There
> were multiple ones, with random segfaults for the early ones (but
> afaik those were fixed by an RMA process with AMD), but the "it
> randomly locks up" ones never had a satisfactory resolution afaik.
>
> There were lots of random workarounds, but judging by your email:
>
>> We played with various boot parameters (currently we're using
>> 'mem_encrypt=off rcu_nocbs=0-31 processor.max_cstate=1 idle=nomwait nomodeset consoleblank=0',
>
> I suspect you've seen all the bugzilla threads on this issue (kernel
> bugzilla 196683 is probably the main one, but it was discussed
> elsewhere too).

I just found that one, I'll have a closer look at the details in the next days.

> I assume you've updated to latest BIOS and looked at various BIOS
> power management settings too?

No, but I'll have a look at that.

> Zen 2 seems to have fixed things (knock wood - it's certainly working
> for me), But many people obviously never saw any issues with Zen 1
> either.

Do you know about the Zen3 status, I was thinking to replace the system
by this one with AMD Ryzen 9 5950X:
https://www.hetzner.com/dedicated-rootserver/ax101

Thanks!
metze


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