The following reply was made to PR port-evbarm/49019; it has been noted by
GNATS.
From: David Holland <dholland-bugs%netbsd.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc:
Subject: Re: port-evbarm/49019: RPI: interrupt storm when url0 is up
Date: Sun, 20 Jul 2014 20:13:22 +0000
On Fri, Jul 18, 2014 at 09:00:00PM +0000, Takahiro HAYASHI wrote:
> >Description:
> I have noticed tty interaction gets slow and laggie when
> I turn up url0 plugged into Raspberry-Pi.
> "bcm2835 pic usb" intr rate shown by systat vm increases from
> about 8100 to more than 37000.
> It gets back to 8100 when ifconfig url0 down.
>
> This issue happens with kue and udav too, but does not w/ axe.
> url, kue, and udav are FS devices, axe is HS device.
>
> >How-To-Repeat:
> Plug url, kue, or udav into RPI and ifconfig it up.
Which usb controller is this?