strange statistics about ohci with systat and top

Tue Mar 25 05:57:17 PDT 2008

Anyone notice anything strange here? Why ohci (usb) got so huge number of 
interrupts? Even if I have no usb devices connected to this box.

39.6%Sys  37.9%Intr  0.0%User  0.0%Nice 22.5%Idle 

# systat -vm

Interrupts
101k total
96514 ohci0 ohci
ata0 irq14
587 twa0 irq16
em1 irq25
2000 cpu0: time
2000 cpu1: time

FreeBSD 7.0-STABLE-200803 #0: Mon Mar 10 18:53:59 UTC 2008

That irq problem was detected originally with ps/2 keyboard without any usb 
device attached (dmesg info here is taken later). And I tried to use usb 
flash drive but it was showing up like umass0 storage and was unable to mount 
it normally (I can use it on 6.2, 6.3 and 7.0 versions just fine though). 
Maybe something is wrong with freebsd kernel udev implementation- I got twa 
device (that is 3ware sata raid controller) but my system recognizes this 
raid as da0 disk....

How can I resolve this problem? By disabling USB in bios? 
Board is Tyan S3870 
http://tyan.com/support_download_bios.aspx?model=B.GT20B3870
Latest motherboard bios and and raid controller firmware applied.

On same motherboard FreeBSD-s version 6.2, 6.3 and 7.0 (32 and 64 bit) hang 
during initial boot- only version that worked is latest stable 7.

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# dmesg
Copyright (c) 1992-2008 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 7.0-STABLE-200803 #0: Mon Mar 10 18:53:59 UTC 2008
    root at driscoll.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Dual Core AMD Opteron(tm) Processor 270 (1995.01-MHz K8-class CPU)
  Origin = "AuthenticAMD"  Id = 0x20f12  Stepping = 2

Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
  Features2=0x1<SSE3>
  AMD Features=0xe2500800<SYSCALL,NX,MMX+,FFXSR,LM,3DNow!+,3DNow!>
  AMD Features2=0x3<LAHF,CMP>
  Cores per package: 2
usable memory = 2134601728 (2035 MB)
avail memory  = 2059890688 (1964 MB)
ACPI APIC Table: <A M I  OEMAPIC >
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
MADT: Forcing active-low polarity and level trigger for SCI
ioapic0 <Version 1.1> irqs 0-15 on motherboard
ioapic1 <Version 1.1> irqs 16-31 on motherboard
ioapic2 <Version 1.1> irqs 32-47 on motherboard
kbd1 at kbdmux0
ath_hal: 0.9.20.3 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413)
acpi0: <A M I OEMXSDT> on motherboard
acpi0: [ITHREAD]
acpi0: Power Button (fixed)
acpi0: Sleep Button (fixed)
acpi0: reservation of 0, a0000 (3) failed
acpi0: reservation of 100000, 7ff00000 (3) failed
Timecounter "ACPI-safe" frequency 3579545 Hz quality 850
acpi_timer0: <32-bit timer at 3.579545MHz> port 0x508-0x50b on acpi0
cpu0: <ACPI CPU> on acpi0
powernow0: <Cool`n'Quiet K8> on cpu0
cpu1: <ACPI CPU> on acpi0
powernow1: <Cool`n'Quiet K8> on cpu1
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
pcib1: <ACPI PCI-PCI bridge> at device 1.0 on pci0
pci1: <ACPI PCI bus> on pcib1
pcib2: <ACPI PCI-PCI bridge> at device 13.0 on pci1
pci2: <ACPI PCI bus> on pcib2
3ware device driver for 9000 series storage controllers, version: 3.70.05.001
twa0: <3ware 9000 series Storage Controller> port 0xcc00-0xcc3f mem 
0xf4000000-0xf5ffffff,0xff3ff000-0xff3fffff irq 16 at device 3.0 on pci2
twa0: [ITHREAD]
twa0: INFO: (0x15: 0x1300): Controller details:: Model 9550SX-4LP, 4 ports, 
Firmware FE9X 3.08.00.016, BIOS BE9X 3.08.00.004
atapci0: <ServerWorks HT1000 UDMA100 controller> port 
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xffa0-0xffaf at device 2.1 on pci0
ata0: <ATA channel 0> on atapci0
ata0: [ITHREAD]
ata1: <ATA channel 1> on atapci0
ata1: [ITHREAD]
isab0: <PCI-ISA bridge> at device 2.2 on pci0
isa0: <ISA bus> on isab0
ohci0: <OHCI (generic) USB controller> port 0xe000-0xe0ff mem 
0xff6b8000-0xff6b8fff irq 10 at device 3.0 on pci0
ohci0: [GIANT-LOCKED]
ohci0: [ITHREAD]
usb0: OHCI version 1.0, legacy support
usb0: SMM does not respond, resetting
usb0: <OHCI (generic) USB controller> on ohci0
usb0: USB revision 1.0
uhub0: <(0x1166) OHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb0
uhub0: 2 ports with 2 removable, self powered
ohci1: <OHCI (generic) USB controller> port 0xe400-0xe4ff mem 
0xff6b9000-0xff6b9fff irq 10 at device 3.1 on pci0
ohci1: [GIANT-LOCKED]
ohci1: [ITHREAD]
usb1: OHCI version 1.0, legacy support
usb1: SMM does not respond, resetting
usb1: <OHCI (generic) USB controller> on ohci1
usb1: USB revision 1.0
uhub1: <(0x1166) OHCI root hub, class 9/0, rev 1.00/1.00, addr 1> on usb1
uhub1: 2 ports with 2 removable, self powered
ehci0: <EHCI (generic) USB 2.0 controller> port 0xe800-0xe8ff mem 
0xff6ba000-0xff6bafff irq 10 at device 3.2 on pci0
ehci0: [GIANT-LOCKED]
ehci0: [ITHREAD]
usb2: EHCI version 1.0
usb2: companion controllers, 2 ports each: usb0 usb1
usb2: <EHCI (generic) USB 2.0 controller> on ehci0
usb2: USB revision 2.0
uhub2: <(0x1166) EHCI root hub, class 9/0, rev 2.00/1.00, addr 1> on usb2
uhub2: 4 ports with 4 removable, self powered
em0: <Intel(R) PRO/1000 Network Connection Version - 6.7.3> port 0xdc00-0xdc3f 
mem 0xff680000-0xff69ffff,0xff660000-0xff67ffff irq 24 at device 4.0 on pci0
em0: Ethernet address: 00:e0:81:41:3e:5c
em0: [FILTER]
em1: <Intel(R) PRO/1000 Network Connection Version - 6.7.3> port 0xd880-0xd8bf 
mem 0xff620000-0xff63ffff,0xff600000-0xff61ffff irq 25 at device 5.0 on pci0
em1: Ethernet address: 00:e0:81:41:3e:5d
em1: [FILTER]
vgapci0: <VGA-compatible display> port 0xec00-0xec7f mem 
0xf8000000-0xfbffffff,0xff6c0000-0xff6fffff at device 6.0 on pci0
acpi_button0: <Power Button> on acpi0
sio0: configured irq 4 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0: configured irq 4 not in bitmap of probed irqs 0
sio0: port may not be enabled
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
sio0: [FILTER]
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
sio1: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
sio1: [FILTER]
fdc0: <floppy drive controller (FDE)> port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on 
acpi0
fdc0: [FILTER]
orm0: <ISA Option ROMs> at iomem 0xc0000-0xc7fff,0xc8000-0xc9fff on isa0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
atkbd0: [ITHREAD]
ppc0: cannot reserve I/O port range
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
uhub3: <vendor 0x0557 product 0x7000, class 9/0, rev 1.10/1.00, addr 2> on 
uhub0
uhub3: 4 ports with 4 removable, self powered
ukbd0: <ATEN CS-1734A V3.4.331, class 0/0, rev 1.10/1.00, addr 3> on uhub3
kbd2 at ukbd0
ums0: <ATEN CS-1734A V3.4.331, class 0/0, rev 1.10/1.00, addr 3> on uhub3
ums0: 5 buttons and Z dir.
Timecounters tick every 1.000 msec
acd0: CDROM <CD-224E-N/1.AA> at ata0-slave UDMA33
SMP: AP CPU #1 Launched!
da0 at twa0 bus 0 target 0 lun 0
da0: <AMCC 9550SX-4LP DISK 3.08> Fixed Direct Access SCSI-5 device
da0: 100.000MB/s transfers
da0: 572184MB (1171832832 512 byte sectors: 255H 63S/T 72943C)
Trying to mount root from ufs:/dev/da0s1a
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