amd64/179376: xhci ehci irq storm
Michal Sviba
michal at sviba.cz
Thu Jun 6 20:53:43 UTC 2013
>Number: 179376
>Category: amd64
>Synopsis: xhci ehci irq storm
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-amd64
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Jun 06 19:30:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator: Michal Sviba
>Release: 9.1
>Organization:
>Environment:
9.1-RELEASE-p2 #0: Mon Apr 29 13:25:59 CEST 2013
>Description:
CPU load is high because of to much interrupts.
#vmstat -i
interrupt total rate
irq16: xhci0 ehci0 20060263963 14114
irq23: ehci1 2844944 2
cpu0:timer 1227368754 863
irq264: em0 39704787 27
irq265: hdac0 77 0
irq266: ahci0 5757249 4
cpu1:timer 30460523 21
cpu3:timer 26554702 18
cpu2:timer 35402259 24
Total 21428357258 15077
#sysctl hw.usb.ehci.debug=1
#sysctl hw.usb.xhci.debug=1
#tail -f /var/log/messages
Jun 6 21:22:25 ms10 kernel: ehci_set_hw_power:
Jun 6 21:22:25 ms10 kernel: ehci_set_hw_power: Periodic is active
Jun 6 21:22:25 ms10 kernel: ehci_set_hw_power:
Jun 6 21:22:25 ms10 kernel: ehci_set_hw_power: Async is active
Jun 6 21:22:25 ms10 kernel: ehci_set_hw_power: Periodic is active
Jun 6 21:22:25 ms10 kernel: ehci_set_hw_power:
Jun 6 21:22:25 ms10 kernel: ehci_set_hw_power: Periodic is active
Jun 6 21:22:25 ms10 kernel: ehci_set_hw_power:
Jun 6 21:22:25 ms10 kernel: ehci_set_hw_power: Async is active
Jun 6 21:22:25 ms10 kernel: ehci_set_hw_power: Periodic is active
Jun 6 21:22:29 ms10 kernel: xhci_set_hw_power:
Jun 6 21:22:29 ms10 kernel: ehci_set_hw_power:
Jun 6 21:22:29 ms10 kernel: ehci_set_hw_power: Periodic is active
Jun 6 21:22:29 ms10 kernel: ehci_set_hw_power:
Jun 6 21:22:29 ms10 kernel: ehci_set_hw_power: Async is active
Jun 6 21:22:29 ms10 kernel: ehci_set_hw_power: Periodic is active
Jun 6 21:22:29 ms10 kernel: ehci_set_hw_power:
Jun 6 21:22:29 ms10 kernel: ehci_set_hw_power: Periodic is active
Jun 6 21:22:29 ms10 kernel: ehci_set_hw_power:
Jun 6 21:22:29 ms10 kernel: ehci_set_hw_power: Async is active
Jun 6 21:22:29 ms10 kernel: ehci_set_hw_power: Periodic is active
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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