High interrupt CPU in top...

Peter Harrison four.harrisons at googlemail.com
Tue Oct 28 13:27:10 UTC 2014


On 27 October 2014 23:56, Dutch Ingraham <stoa at gmx.us> wrote:

> On 10/27/2014 17:37, Peter Harrison wrote:
>
> >
> > [peter 181]> vmstat -i
> > interrupt                          total       rate
> > irq1: atkbd0                       11870          1
> > irq9: acpi0                        27499          4
> > irq12: psm0                       234774         39
> > irq16: uhci3                  1250818252     210292
> > irq20: hpet0 uhci0               6977995       1173
> > irq21: uhci1                          11          0
> > irq23: ehci0                           2          0
> > irq257: hdac0                      16380          2
> > irq258: iwn0                      559063         93
> > irq259: ahci0                     103732         17
> > irq260: vgapci0                   311808         52
> > Total                         1259061386     211678
> >
> >
> > Any idea why the uhci is causing such a high interrupt rate? Is that
> > normal? Sorry for being so noob.
> >
> >
> >
> > Peter Harrison.
> > _______________________________________________
> > freebsd-questions at freebsd.org mailing list
> > http://lists.freebsd.org/mailman/listinfo/freebsd-questions
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> >
>
> Please post back the output from <pciconf -lvc>
>


Here you go:

 hostb0 at pci0:0:0:0: class=0x060000 card=0x20e017aa chip=0x2a408086 rev=0x07
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Mobile 4 Series Chipset Memory Controller Hub'
    class      = bridge
    subclass   = HOST-PCI
    cap 09[e0] = vendor (length 10) Intel cap 1 version 1
vgapci0 at pci0:0:2:0: class=0x030000 card=0x20e417aa chip=0x2a428086 rev=0x07
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Mobile 4 Series Chipset Integrated Graphics Controller'
    class      = display
    subclass   = VGA
    cap 05[90] = MSI supports 1 message enabled with 1 message
    cap 01[d0] = powerspec 3  supports D0 D3  current D0
vgapci1 at pci0:0:2:1: class=0x038000 card=0x20e417aa chip=0x2a438086 rev=0x07
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Mobile 4 Series Chipset Integrated Graphics Controller'
    class      = display
    cap 01[d0] = powerspec 3  supports D0 D3  current D0
none0 at pci0:0:3:0: class=0x078000 card=0x20e617aa chip=0x2a448086 rev=0x07
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Mobile 4 Series Chipset MEI Controller'
    class      = simple comms
    cap 01[50] = powerspec 3  supports D0 D3  current D0
    cap 05[8c] = MSI supports 1 message, 64 bit
atapci0 at pci0:0:3:2: class=0x010185 card=0x20ea17aa chip=0x2a468086 rev=0x07
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Mobile 4 Series Chipset PT IDER Controller'
    class      = mass storage
    subclass   = ATA
    cap 01[c8] = powerspec 3  supports D0 D3  current D0
    cap 05[d0] = MSI supports 1 message, 64 bit
none1 at pci0:0:3:3: class=0x070002 card=0x20ec17aa chip=0x2a478086 rev=0x07
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Mobile 4 Series Chipset AMT SOL Redirection'
    class      = simple comms
    subclass   = UART
    cap 01[c8] = powerspec 3  supports D0 D3  current D0
    cap 05[d0] = MSI supports 1 message, 64 bit
em0 at pci0:0:25:0: class=0x020000 card=0x20ee17aa chip=0x10f58086 rev=0x03
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82567LM Gigabit Network Connection'
    class      = network
    subclass   = ethernet
    cap 01[c8] = powerspec 2  supports D0 D3  current D0
    cap 05[d0] = MSI supports 1 message, 64 bit enabled with 1 message
    cap 13[e0] = PCI Advanced Features: FLR TP
uhci0 at pci0:0:26:0: class=0x0c0300 card=0x20f017aa chip=0x29378086 rev=0x03
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82801I (ICH9 Family) USB UHCI Controller'
    class      = serial bus
    subclass   = USB
    cap 13[50] = PCI Advanced Features: FLR TP
uhci1 at pci0:0:26:1: class=0x0c0300 card=0x20f017aa chip=0x29388086 rev=0x03
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82801I (ICH9 Family) USB UHCI Controller'
    class      = serial bus
    subclass   = USB
    cap 13[50] = PCI Advanced Features: FLR TP
uhci2 at pci0:0:26:2: class=0x0c0300 card=0x20f017aa chip=0x29398086 rev=0x03
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82801I (ICH9 Family) USB UHCI Controller'
    class      = serial bus
    subclass   = USB
    cap 13[50] = PCI Advanced Features: FLR TP
ehci0 at pci0:0:26:7: class=0x0c0320 card=0x20f117aa chip=0x293c8086 rev=0x03
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82801I (ICH9 Family) USB2 EHCI Controller'
    class      = serial bus
    subclass   = USB
    cap 01[50] = powerspec 2  supports D0 D3  current D0
    cap 0a[58] = EHCI Debug Port at offset 0xa0 in map 0x14
    cap 13[98] = PCI Advanced Features: FLR TP
hdac0 at pci0:0:27:0: class=0x040300 card=0x20f217aa chip=0x293e8086 rev=0x03
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82801I (ICH9 Family) HD Audio Controller'
    class      = multimedia
    subclass   = HDA
    cap 01[50] = powerspec 2  supports D0 D3  current D0
    cap 05[60] = MSI supports 1 message, 64 bit enabled with 1 message
    cap 10[70] = PCI-Express 1 root endpoint max data 128(128) FLR link
x0(x0)
    ecap 0002[100] = VC 1 max VC1
    ecap 0005[130] = Root Complex Link Declaration 1
pcib1 at pci0:0:28:0: class=0x060400 card=0x20f317aa chip=0x29408086 rev=0x03
hdr=0x01
    vendor     = 'Intel Corporation'
    device     = '82801I (ICH9 Family) PCI Express Port 1'
    class      = bridge
    subclass   = PCI-PCI
    cap 10[40] = PCI-Express 1 root port slot max data 128(128) link x0(x1)
                 speed 0.0(2.5) ASPM disabled(L0s/L1)
    cap 05[80] = MSI supports 1 message
    cap 0d[90] = PCI Bridge card=0x20f317aa
    cap 01[a0] = powerspec 2  supports D0 D3  current D0
    ecap 0002[100] = VC 1 max VC0
    ecap 0005[180] = Root Complex Link Declaration 1
pcib2 at pci0:0:28:1: class=0x060400 card=0x20f317aa chip=0x29428086 rev=0x03
hdr=0x01
    vendor     = 'Intel Corporation'
    device     = '82801I (ICH9 Family) PCI Express Port 2'
    class      = bridge
    subclass   = PCI-PCI
    cap 10[40] = PCI-Express 1 root port slot max data 128(128) link x1(x1)
                 speed 2.5(2.5) ASPM L1(L0s/L1)
    cap 05[80] = MSI supports 1 message
    cap 0d[90] = PCI Bridge card=0x20f317aa
    cap 01[a0] = powerspec 2  supports D0 D3  current D0
    ecap 0002[100] = VC 1 max VC0
    ecap 0005[180] = Root Complex Link Declaration 1
pcib3 at pci0:0:28:3: class=0x060400 card=0x20f317aa chip=0x29468086 rev=0x03
hdr=0x01
    vendor     = 'Intel Corporation'
    device     = '82801I (ICH9 Family) PCI Express Port 4'
    class      = bridge
    subclass   = PCI-PCI
    cap 10[40] = PCI-Express 1 root port slot max data 128(128) link x0(x1)
                 speed 0.0(2.5) ASPM L0s/L1(L0s/L1)
    cap 05[80] = MSI supports 1 message
    cap 0d[90] = PCI Bridge card=0x20f317aa
    cap 01[a0] = powerspec 2  supports D0 D3  current D0
    ecap 0002[100] = VC 1 max VC0
    ecap 0005[180] = Root Complex Link Declaration 1
uhci3 at pci0:0:29:0: class=0x0c0300 card=0x20f017aa chip=0x29348086 rev=0x03
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82801I (ICH9 Family) USB UHCI Controller'
    class      = serial bus
    subclass   = USB
    cap 13[50] = PCI Advanced Features: FLR TP
uhci4 at pci0:0:29:1: class=0x0c0300 card=0x20f017aa chip=0x29358086 rev=0x03
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82801I (ICH9 Family) USB UHCI Controller'
    class      = serial bus
    subclass   = USB
    cap 13[50] = PCI Advanced Features: FLR TP
uhci5 at pci0:0:29:2: class=0x0c0300 card=0x20f017aa chip=0x29368086 rev=0x03
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82801I (ICH9 Family) USB UHCI Controller'
    class      = serial bus
    subclass   = USB
    cap 13[50] = PCI Advanced Features: FLR TP
ehci1 at pci0:0:29:7: class=0x0c0320 card=0x20f117aa chip=0x293a8086 rev=0x03
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82801I (ICH9 Family) USB2 EHCI Controller'
    class      = serial bus
    subclass   = USB
    cap 01[50] = powerspec 2  supports D0 D3  current D0
    cap 0a[58] = EHCI Debug Port at offset 0xa0 in map 0x14
    cap 13[98] = PCI Advanced Features: FLR TP
pcib4 at pci0:0:30:0: class=0x060401 card=0x20f417aa chip=0x24488086 rev=0x93
hdr=0x01
    vendor     = 'Intel Corporation'
    device     = '82801 Mobile PCI Bridge'
    class      = bridge
    subclass   = PCI-PCI
    cap 0d[50] = PCI Bridge card=0x20f417aa
isab0 at pci0:0:31:0: class=0x060100 card=0x20f517aa chip=0x29178086 rev=0x03
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'ICH9M-E LPC Interface Controller'
    class      = bridge
    subclass   = PCI-ISA
    cap 09[e0] = vendor (length 12) Intel cap 1 version 0
 features: SATA RAID-5, Mobile, 4 PCI-e x1 slots
ahci0 at pci0:0:31:2: class=0x010601 card=0x20f817aa chip=0x29298086 rev=0x03
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82801IBM/IEM (ICH9M/ICH9M-E) 4 port SATA Controller [AHCI
mode]'
    class      = mass storage
    subclass   = SATA
    cap 05[80] = MSI supports 16 messages enabled with 1 message
    cap 01[70] = powerspec 3  supports D0 D3  current D0
    cap 12[a8] = SATA Index-Data Pair
    cap 13[b0] = PCI Advanced Features: FLR TP
none2 at pci0:0:31:3: class=0x0c0500 card=0x20f917aa chip=0x29308086 rev=0x03
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = '82801I (ICH9 Family) SMBus Controller'
    class      = serial bus
    subclass   = SMBus
iwn0 at pci0:3:0:0: class=0x028000 card=0x12118086 chip=0x42378086 rev=0x00
hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'PRO/Wireless 5100 AGN [Shiloh] Network Connection'
    class      = network
    cap 01[c8] = powerspec 3  supports D0 D3  current D0
    cap 05[d0] = MSI supports 1 message, 64 bit enabled with 1 message
    cap 10[e0] = PCI-Express 1 endpoint max data 128(128) FLR link x1(x1)
                 speed 2.5(2.5) ASPM L0s/L1(L0s/L1)
    ecap 0001[100] = AER 1 0 fatal 0 non-fatal 1 corrected
    ecap 0003[140] = Serial 1 00216bffffca1934


Thanks (and sorry if gmail's web interface mangled that too much),



Peter Harrison.


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