Date: Sat, 9 Jul 2011 09:20:11 GMT From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-usb@FreeBSD.org Subject: Re: usb/156596: [ehci] Extremely high interrupt rate on ehci/uhci IRQ16 80% cpu utilization on CPU0 Message-ID: <201107090920.p699KB8x097519@freefall.freebsd.org>
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The following reply was made to PR usb/156596; it has been noted by GNATS. From: Hans Petter Selasky <hselasky@c2i.net> To: Colin Percival <cperciva@freebsd.org> Cc: "bug-followup@FreeBSD.org" <bug-followup@freebsd.org> Subject: Re: usb/156596: [ehci] Extremely high interrupt rate on ehci/uhci IRQ16 80% cpu utilization on CPU0 Date: Sat, 9 Jul 2011 11:07:16 +0200 On Friday 08 July 2011 22:37:45 Colin Percival wrote: > Hi, > > I'm seeing this ehci interrupt storm with 8.2-RELEASE on my Dell E5420 > laptop; vmstat -i reports 187300 interrupts per second from ehci. > > I've attached my /var/log/messages showing the boot messages and 1 seconds > worth of hw.usb.ehci.debug=15 output as suggested. Hopefully it means > more to you than it does to me... Have you tried to set any of these quirks: hw.usb.ehci.lostintrbug: 0 hw.usb.ehci.iaadbug: 0 --HPS
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