Date: Wed, 24 Apr 2013 10:40:01 GMT From: Andrew Fremantle <andrew@skyhawk.ca> 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: <201304241040.r3OAe175075283@freefall.freebsd.org>
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The following reply was made to PR usb/156596; it has been noted by GNATS. From: Andrew Fremantle <andrew@skyhawk.ca> To: bug-followup@FreeBSD.org, daynejordan@gmail.com Cc: Subject: Re: usb/156596: [ehci] Extremely high interrupt rate on ehci/uhci IRQ16 80% cpu utilization on CPU0 Date: Wed, 24 Apr 2013 03:33:02 -0700 --047d7b10d1b7998c1c04db18d35b Content-Type: text/plain; charset=ISO-8859-1 Based on the fact this only seems to happen on Intel Core architecture machines, I think this issue may be miscategorized. In my case, the flooding starts when I yank the VGA cable from the back of the machine. vgapci0 shares irq16 with ehci0 in every example of this issue i've been able to find. The forum thread on this issue may make for relevant reading: http://forums.freebsd.org/showthread.php?t=24952 --047d7b10d1b7998c1c04db18d35b Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr"><div><div>Based on the fact this only seems to happen on I= ntel Core architecture machines, I think this issue may be miscategorized.<= br><br></div>In my case, the flooding starts when I yank the VGA cable from= the back of the machine. vgapci0 shares irq16 with ehci0 in every example = of this issue i've been able to find.<br> <br></div>The forum thread on this issue may make for relevant reading: <a = href=3D"http://forums.freebsd.org/showthread.php?t=3D24952">http://forums.f= reebsd.org/showthread.php?t=3D24952</a><br></div> --047d7b10d1b7998c1c04db18d35b--
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