Re: 8k interrupts/sec with USB hub

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On Wed, Nov 15, 2017 at 02:58:00PM +0000, Billy Araujo wrote:
> Hi Greg,
> 
> 1. What kernel version are you using here?
> 
> Sorry about the lack of info. The kernel is: SOCKit: Angstrom v2016.12
> - Kernel 4.1.22-ltsi-altera

Oh wow that is old and obsolete.  Please go get support from the vendor
that is forcing you to use such a thing, you are already paying them for
the support, might as well use it :)

> 2. Why is this an "issue"?  Is the device not working properly?
> 
> It is an issue because it makes the CPU busier and when I have another
> application which needs to run with low latency, these interrupts get
> in the way because I think they have higher priority.

Try the patches that Johan pointed you at, that might help out.  If not,
again, go ask the vendor, they are the best ones to know.

good luck!

greg k-h
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