[CentOS] usb irq problem

kira laucas kira.laucas at gmail.com
Wed Sep 24 13:42:36 UTC 2008


On Wed, Sep 24, 2008 at 5:39 PM, nate <centos at linuxpowered.net> wrote:

>
>
>
> http://www.linuxtopia.org/online_books/linux_kernel/kernel_configuration/re18.html
>
> By default, the kernel attempts to detect and disable unhandled
> interrupt sources because they can cause problems with the
> responsiveness of the rest of the kernel if left unchecked.
> This option will disable this logic.
>
> just for curiosity, is this option removed  in the latest 2.6.26.5 kernel
> ? because i experimented with compiling a custom kernel and did not ever
> receive the message . anyway i am running centos without any problem now and
> i am glad about it.
>
> Replace the hardware, get better quality stuff. Since this
> is USB, get a PCI USB expansion board see if that helps.
> About a year ago I bought a USB 2.0 PCI card for one of
> my older systems, was about $20 I think.
>
> now that you have mentioned it, i have noticed recently that my desktop
motherboard usb port has gone slower. i mean previously i used to get 28-30
MB/s transfer speed with my external usb drive. but now the max i get is
10MB/s . i have tested the external drive on my friend's laptop and to my
surprise it transferred with 25MB/s ! is it any indication of any
potentially disastrous hardware failure issue ?

for information my hardware is :
00:00.0 RAM memory: nVidia Corporation MCP67 Memory Controller (rev a2)
    Subsystem: ASUSTeK Computer Inc. Unknown device 82b3
    Flags: bus master, 66MHz, fast devsel, latency 0
    Capabilities: [44] HyperTransport: Slave or Primary Interface
    Capabilities: [dc] HyperTransport: MSI Mapping

00:01.0 ISA bridge: nVidia Corporation MCP67 ISA Bridge (rev a2)
    Subsystem: ASUSTeK Computer Inc. Unknown device 82b3
    Flags: bus master, 66MHz, fast devsel, latency 0
    I/O ports at 0900 [size=256]

00:01.1 SMBus: nVidia Corporation MCP67 SMBus (rev a2)
    Subsystem: ASUSTeK Computer Inc. Unknown device 82b3
    Flags: 66MHz, fast devsel, IRQ 10
    I/O ports at dc00 [size=64]
    I/O ports at 0600 [size=64]
    I/O ports at 0700 [size=64]
    Capabilities: [44] Power Management version 2

00:02.0 USB Controller: nVidia Corporation MCP67 OHCI USB 1.1 Controller
(rev a2) (prog-if 10 [OHCI])
    Subsystem: ASUSTeK Computer Inc. Unknown device 82b3
    Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 58
    Memory at feaff000 (32-bit, non-prefetchable) [size=4K]
    Capabilities: [44] Power Management version 2

00:02.1 USB Controller: nVidia Corporation MCP67 EHCI USB 2.0 Controller
(rev a2) (prog-if 20 [EHCI])
    Subsystem: ASUSTeK Computer Inc. Unknown device 82b3
    Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 233
    Memory at feafec00 (32-bit, non-prefetchable) [size=256]
    Capabilities: [44] Debug port
    Capabilities: [80] Power Management version 2

00:04.0 USB Controller: nVidia Corporation MCP67 OHCI USB 1.1 Controller
(rev a2) (prog-if 10 [OHCI])
    Subsystem: ASUSTeK Computer Inc. Unknown device 82b3
    Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 66
    Memory at feafd000 (32-bit, non-prefetchable) [size=4K]
    Capabilities: [44] Power Management version 2

00:04.1 USB Controller: nVidia Corporation MCP67 EHCI USB 2.0 Controller
(rev a2) (prog-if 20 [EHCI])
    Subsystem: ASUSTeK Computer Inc. Unknown device 82b3
    Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 50
    Memory at feafe800 (32-bit, non-prefetchable) [size=256]
    Capabilities: [44] Debug port
    Capabilities: [80] Power Management version 2

00:08.0 PCI bridge: nVidia Corporation MCP67 PCI Bridge (rev a2) (prog-if 01
[Subtractive decode])
    Flags: bus master, 66MHz, fast devsel, latency 0
    Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
    I/O behind bridge: 0000e000-0000efff
    Memory behind bridge: feb00000-febfffff
    Capabilities: [b8] #0d [0000]
    Capabilities: [8c] HyperTransport: MSI Mapping

00:09.0 IDE interface: nVidia Corporation MCP67 AHCI Controller (rev a2)
(prog-if 85 [Master SecO PriO])
    Subsystem: ASUSTeK Computer Inc. Unknown device 82b3
    Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 233
    I/O ports at d480 [size=8]
    I/O ports at d400 [size=4]
    I/O ports at d080 [size=8]
    I/O ports at d000 [size=4]
    I/O ports at cc00 [size=16]
    Memory at feafa000 (32-bit, non-prefetchable) [size=8K]
    Capabilities: [44] Power Management version 2
    Capabilities: [8c] #12 [0010]

00:0a.0 Ethernet controller: nVidia Corporation MCP67 Ethernet (rev a2)
    Subsystem: ASUSTeK Computer Inc. Unknown device 82b3
    Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 90
    Memory at feafc000 (32-bit, non-prefetchable) [size=4K]
    I/O ports at c880 [size=8]
    Memory at feafe400 (32-bit, non-prefetchable) [size=256]
    Memory at feafe000 (32-bit, non-prefetchable) [size=16]
    Capabilities: [44] Power Management version 2
    Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/3
Enable+
    Capabilities: [6c] HyperTransport: MSI Mapping

00:0b.0 PCI bridge: nVidia Corporation MCP67 PCI Express Bridge (rev a2)
(prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
    Capabilities: [40] #0d [0000]
    Capabilities: [48] Power Management version 2
    Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/1
Enable+
    Capabilities: [60] HyperTransport: MSI Mapping
    Capabilities: [80] Express Root Port (Slot+) IRQ 0

00:0c.0 PCI bridge: nVidia Corporation MCP67 PCI Express Bridge (rev a2)
(prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
    Capabilities: [40] #0d [0000]
    Capabilities: [48] Power Management version 2
    Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/1
Enable+
    Capabilities: [60] HyperTransport: MSI Mapping
    Capabilities: [80] Express Root Port (Slot+) IRQ 0

00:0d.0 PCI bridge: nVidia Corporation MCP67 PCI Express Bridge (rev a2)
(prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
    Capabilities: [40] #0d [0000]
    Capabilities: [48] Power Management version 2
    Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/1
Enable+
    Capabilities: [60] HyperTransport: MSI Mapping
    Capabilities: [80] Express Root Port (Slot+) IRQ 0

00:0e.0 PCI bridge: nVidia Corporation MCP67 PCI Express Bridge (rev a2)
(prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=05, subordinate=05, sec-latency=0
    Capabilities: [40] #0d [0000]
    Capabilities: [48] Power Management version 2
    Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/1
Enable+
    Capabilities: [60] HyperTransport: MSI Mapping
    Capabilities: [80] Express Root Port (Slot+) IRQ 0

00:0f.0 PCI bridge: nVidia Corporation MCP67 PCI Express Bridge (rev a2)
(prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=06, subordinate=06, sec-latency=0
    Capabilities: [40] #0d [0000]
    Capabilities: [48] Power Management version 2
    Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/1
Enable+
    Capabilities: [60] HyperTransport: MSI Mapping
    Capabilities: [80] Express Root Port (Slot+) IRQ 0

00:10.0 PCI bridge: nVidia Corporation MCP67 PCI Express Bridge (rev a2)
(prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=07, subordinate=07, sec-latency=0
    Capabilities: [40] #0d [0000]
    Capabilities: [48] Power Management version 2
    Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/1
Enable+
    Capabilities: [60] HyperTransport: MSI Mapping
    Capabilities: [80] Express Root Port (Slot+) IRQ 0

00:11.0 PCI bridge: nVidia Corporation MCP67 PCI Express Bridge (rev a2)
(prog-if 00 [Normal decode])
    Flags: bus master, fast devsel, latency 0
    Bus: primary=00, secondary=08, subordinate=08, sec-latency=0
    Capabilities: [40] #0d [0000]
    Capabilities: [48] Power Management version 2
    Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/1
Enable+
    Capabilities: [60] HyperTransport: MSI Mapping
    Capabilities: [80] Express Root Port (Slot+) IRQ 0

00:12.0 VGA compatible controller: nVidia Corporation GeForce 7050 PV /
nForce 630a (rev a2) (prog-if 00 [VGA controller])
    Subsystem: ASUSTeK Computer Inc. Unknown device 82b3
    Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 58
    Memory at fd000000 (32-bit, non-prefetchable) [size=16M]
    Memory at d0000000 (64-bit, prefetchable) [size=256M]
    Memory at fc000000 (64-bit, non-prefetchable) [size=16M]
    [virtual] Expansion ROM at feac0000 [disabled] [size=128K]
    Capabilities: [48] Power Management version 2
    Capabilities: [50] Message Signalled Interrupts: 64bit+ Queue=0/0
Enable-

00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
HyperTransport Technology Configuration
    Flags: fast devsel
    Capabilities: [80] HyperTransport: Host or Secondary Interface

00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
Address Map
    Flags: fast devsel

00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM
Controller
    Flags: fast devsel

00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron]
Miscellaneous Control
    Flags: fast devsel
    Capabilities: [f0] #0f [0010]

01:06.0 Multimedia audio controller: Creative Labs [SB Live! Value] EMU10k1X
    Subsystem: Creative Labs Unknown device 1001
    Flags: bus master, medium devsel, latency 64, IRQ 82
    I/O ports at ec00 [size=32]
    Capabilities: [dc] Power Management version 2

01:07.0 Ethernet controller: VIA Technologies, Inc. VT6105 [Rhine-III] (rev
8b)
    Subsystem: D-Link System Inc Unknown device 1405
    Flags: bus master, medium devsel, latency 64, IRQ 74
    I/O ports at e800 [size=256]
    Memory at febffc00 (32-bit, non-prefetchable) [size=256]
    Capabilities: [44] Power Management version 2
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