[fedora-arm] Re: Problem with kernel-5.0.3-200.fc29.armv7hl on Raspberry PI 3B/3B+

2019-03-27 Thread Stefan Wahren
Hi William,

> William Jacobs  hat am 27. März 2019 um 18:33 geschrieben:
> 
> 
> I have continued to to look into this and found something. 
> 
> the vchiq driver seems to behave differently under kernel 5.0.3 than it did 
> under 4.20.16.  Under both kernels, running the ps command shows the 4 vchiq 
> processes.  They are:
> 
> vchiq-slot/0
> vchiq-recy/0
> vchiq-sync/0
> vchiq-keep/0
> 
> For 4.20.16 the processes state code is S (interruptible sleep).  On 5.0.3 
> they are all D (uninterruptible sleep).
> 
> Any thoughst on if these processes are what are causing the load on my 
> Raspberry PIs to be 4.0 all the time or what to do about it would be greatly 
> appreciated.

this is a known, but more "cosmetic" issue. AFAIU this load has already been 
there, but hidden:

https://github.com/raspberrypi/linux/issues/2881

> 
> Thank you
> Will
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[fedora-arm] Re: Problem with kernel-5.0.3-200.fc29.armv7hl on Raspberry PI 3B/3B+

2019-03-27 Thread William Jacobs
I have continued to to look into this and found something. 

the vchiq driver seems to behave differently under kernel 5.0.3 than it did 
under 4.20.16.  Under both kernels, running the ps command shows the 4 vchiq 
processes.  They are:

vchiq-slot/0
vchiq-recy/0
vchiq-sync/0
vchiq-keep/0

For 4.20.16 the processes state code is S (interruptible sleep).  On 5.0.3 they 
are all D (uninterruptible sleep).

Any thoughst on if these processes are what are causing the load on my 
Raspberry PIs to be 4.0 all the time or what to do about it would be greatly 
appreciated.

Thank you
Will
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