amd64/179376: xhci ehci irq storm

[tin]

The following reply was made to PR amd64/179376; it has been noted by GNATS.

From: tin <tin at tin.org.ua>
To: bug-followup at FreeBSD.org,michal at sviba.cz
Cc:  
Subject: Re: amd64/179376: xhci ehci irq storm
Date: Thu, 22 Aug 2013 19:33:30 +0300

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 The same issue on FreeBSD 9.1-RELEASE GENERIC amd64:
 
 # uname -rsmi
 FreeBSD 9.1-RELEASE amd64 GENERIC
 
 #sysctl hw.usb.xhci.debug=3D16 ; sleep 1; sysctl hw.usb.xhci.debug=3D0
 Aug 22 19:00:00 pedpresa-NEW kernel: interrupt storm detected on "irq16:"; =
 throttling interrupt source
 Aug 22 19:00:31 pedpresa-NEW last message repeated 31 times
 Aug 22 19:02:32 pedpresa-NEW last message repeated 121 times
 Aug 22 19:12:33 pedpresa-NEW last message repeated 601 times
 Aug 22 19:16:53 pedpresa-NEW last message repeated 260 times
 Aug 22 19:16:54 pedpresa-NEW kernel: xhci_interrupt: real interrupt (sts=3D=
 0x00000000, iman=3D0x00000002)
 Aug 22 19:16:54 pedpresa-NEW last message repeated 279 times
 Aug 22 19:16:54 pedpresa-NEW kernel: interrupt storm detected on "irq16:"; =
 throttling interrupt source
 Aug 22 19:16:54 pedpresa-NEW kernel: xhci_interrupt: real interrupt (sts=3D=
 0x00000000, iman=3D0x00000002)
 Aug 22 19:16:55 pedpresa-NEW last message repeated 311 times
 Aug 22 19:16:55 pedpresa-NEW kernel: interrupt storm detected on "irq16:"; =
 throttling interrupt source
 
 # vmstat -i
 interrupt                          total       rate
 irq16: xhci0 ehci0            5588674976      53577
 irq17: re0                       1247393         11
 irq23: ehci1                      157524          1
 cpu0:timer                      15492154        148
 irq264: hdac0                         93          0
 irq266: ahci1                     903811          8
 cpu1:timer                      10026802         96
 cpu7:timer                       9218769         88
 cpu4:timer                       9207822         88
 cpu2:timer                      10149700         97
 cpu6:timer                      47883543        459
 cpu5:timer                       8447886         80
 cpu3:timer                      10476273        100
 Total                         5711886746      54758
 
 # top -SHb 1000 | grep "intr{irq"
    12 root     -88    -     0K   368K istorm  3 363:26  0.88% intr{irq16: x=
 hci0 ehc}
    12 root     -92    -     0K   368K WAIT    5   0:06  0.00% intr{irq17: r=
 e0}
    12 root     -88    -     0K   368K WAIT    3   0:05  0.00% intr{irq266: =
 ahci1}
    12 root     -88    -     0K   368K WAIT    0   0:00  0.00% intr{irq23: e=
 hci1}
    12 root     -96    -     0K   368K WAIT    1   0:00  0.00% intr{irq264: =
 hdac0}
    12 root     -84    -     0K   368K WAIT    0   0:00  0.00% intr{irq1: at=
 kbd0}
    12 root     -84    -     0K   368K WAIT    0   0:00  0.00% intr{irq5: pp=
 c1}
    12 root     -88    -     0K   368K WAIT    0   0:00  0.00% intr{irq265: =
 ahci0}
 
 #pciconf -lvc
 xhci0 at pci0:0:20:0:	class=3D0x0c0330 card=3D0x50071458 chip=3D0x1e318086 rev=
 =3D0x04 hdr=3D0x00
     vendor     =3D 'Intel Corporation'
     device     =3D 'Panther Point USB xHCI Host Controller'
     class      =3D serial bus
     subclass   =3D USB
     cap 01[70] =3D powerspec 2  supports D0 D3  current D0
     cap 05[80] =3D MSI supports 8 messages, 64 bit=20
 ---
 ehci0 at pci0:0:26:0:	class=3D0x0c0320 card=3D0x50061458 chip=3D0x1e2d8086 rev=
 =3D0x04 hdr=3D0x00
     vendor     =3D 'Intel Corporation'
     device     =3D 'Panther Point USB Enhanced Host Controller'
     class      =3D serial bus
     subclass   =3D USB
     cap 01[50] =3D powerspec 2  supports D0 D3  current D0
     cap 0a[58] =3D EHCI Debug Port at offset 0xa0 in map 0x14
     cap 13[98] =3D PCI Advanced Features: FLR TP
 
 
 --=20
 #include <regards.h>
 /*    Pavel Shanaiev    */
 /* Mob. +38(050)7777850 */
 
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