usb/93640: [ehci] [irq] device ehci causes interrupt storm on
this MSI amd64 motherboard
Miguel Ramos
2008 at miguel.ramos.name
Sat May 3 15:30:07 UTC 2008
The following reply was made to PR usb/93640; it has been noted by GNATS.
From: "Miguel Ramos" <2008 at miguel.ramos.name>
To: bug-followup at FreeBSD.org, miguel at anjos.strangled.net
Cc:
Subject: Re: usb/93640: [ehci] [irq] device ehci causes interrupt storm on this MSI amd64 motherboard
Date: Sat, 3 May 2008 15:52:39 +0100
This problem is gone in RELENG_7 as of 2008-05-03. Interrupt count is
now very low and normal, the machine is usable with device ehci.
There has been a recent change in ehci_pci.c which might explain it,
but I don't know what has been changed.
$FreeBSD: src/sys/dev/usb/ehci_pci.c,v 1.28.2.3 2008/04/23 18:50:19 jhb Exp=
$
Thanks, whoever did it, either knowingly or not.
Miguel
--
# vmstat -i
interrupt total rate
irq1: atkbd0 13026 3
irq12: psm0 40 0
irq14: ata0 91649 27
irq15: ata1 1585 0
irq16: ral0 100675 30
irq17: pcm0 1 0
irq18: rl0 drm0 75705 22
irq19: cbb0 ohci0* 220576 66
irq21: fwohci0+ 668 0
cpu0: timer 6647026 1999
Total 7150951 2151
--
# uname -a
FreeBSD targa 7.0-STABLE FreeBSD 7.0-STABLE #1: Sat May 3 14:51:59 WEST 20=
08
root at targa:/var/tmp/usr/src/sys/TARGA amd64
--=20
Miguel Ramos
miguel.ramos at albatroz-eng.com
ALBATROZ Engenharia S.A.
Rua da Concei=E7=E3o 60, 1=BA
P-1100-154 Lisboa
Portugal
Tel.: (+351) 21 347 3079
Fax: (+351) 21 886 7109
http://www.albatroz-eng.com/
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