Re: port-evbarm/49019: RPI: interrupt storm when url0 is up

[David Holland <dholland-bugs%netbsd.org@localhost>]

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?
 
 -- 
 David A. Holland
 dholland%netbsd.org@localhost