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Subject: Re: [CFT] New version of webcamd, now v4.8.0.2
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From: Hans Petter Selasky <hps@selasky.org>
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Date: Fri, 19 Aug 2016 21:53:41 +0200
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On 08/19/16 21:38, Otacílio wrote:
> irq23: ahci0 ohci0+                36858         56

Can you check this IRQ. How much is the counter changing per second.

It looks like the VM is sharing IRQs.

You might try to set:

hw.usb.ohci.debug=16; sleep 1; hw.usb.ohci.debug=0

Same for ehci and xhci. And see if there are interrupts with STATUS=0, 
which means spurious IRQs.

--HPS