IRQ issues and net connection errors - Slackware

This is a discussion on IRQ issues and net connection errors - Slackware ; I can't tell if the errors are on my end or on the providers end. I'm having some broadband problems...not often, but sometimes. From ifconfig eth0 Link encap:Ethernet HWaddr 00:E0:29:5E:FB:48 UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1 RX packets:1532523 errors:3332 ...

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Thread: IRQ issues and net connection errors

  1. IRQ issues and net connection errors


    I can't tell if the errors are on my end or on the providers end.

    I'm having some broadband problems...not often, but sometimes.

    From ifconfig

    eth0 Link encap:Ethernet HWaddr 00:E0:29:5E:FB:48
    UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:1532523 errors:3332 dropped:0 overruns:0 frame:4
    TX packets:361792 errors:0 dropped:0 overruns:3 carrier:0
    collisions:0 txqueuelen:100
    RX bytes:659392678 (628.8 Mb) TX bytes:70863489 (67.5 Mb)
    Interrupt:9 Base address:0x9000

    The loopback entry is showing no errors.

    From syslog:

    eth0: Too much work at interrupt, IntrStatus=0x0001.


    No internet connection.


    From dmesg output:

    8139too Fast Ethernet driver 0.9.26
    PCI: Enabling device 00:10.0 (0104 -> 0107)
    PCI: Found IRQ 9 for device 00:10.0
    PCI: Sharing IRQ 9 with 00:07.2
    eth0: SMC1211TX EZCard 10/100 (RealTek RTL8139) at 0xd0d49000, 00:e0:29:5e:fb:48, IRQ 9
    eth0: Identified 8139 chip type 'RTL-8139B'
    PCI: Enabling device 00:0e.1 (0104 -> 0105)
    gameport0: Emu10k1 Gameport at 0x1010 size 8 speed 1217 kHz
    eth0: Setting half-duplex based on auto-negotiated partner ability 0000.
    PCI: Enabling device 00:0e.0 (0104 -> 0105)
    PCI: Found IRQ 11 for device 00:0e.0
    PCI: Sharing IRQ 11 with 01:00.0
    usb.c: registered new driver usbdevfs
    usb.c: registered new driver hub
    uhci.c: USB Universal Host Controller Interface driver v1.1
    PCI: Found IRQ 9 for device 00:07.2
    PCI: Sharing IRQ 9 with 00:10.0
    uhci.c: USB UHCI at I/O 0x1020, IRQ 9
    usb.c: new USB bus registered, assigned bus number 1
    hub.c: USB hub found
    hub.c: 2 ports detected

    As noted in the output both the network card and the USB hub are sharing IRQ 9

    My question is, should both items be sharing the same IRQ and since I have
    no usb devices attached to my machine can I just chmod 644 rc.hotplug and
    forget about it....do I need hotplug for anything other than usb attachments.


    Ken


  2. Re: IRQ issues and net connection errors

    Neglected to mention, system running and old version of slack, 9.1.

    ken

  3. Re: IRQ issues and net connection errors

    Hallo, No_One,

    Du meintest am 15.10.08:


    > I'm having some broadband problems...not often, but sometimes.


    > From ifconfig


    > eth0 Link encap:Ethernet HWaddr 00:E0:29:5E:FB:48


    [...]

    > From syslog:


    > eth0: Too much work at interrupt, IntrStatus=0x0001.


    > From dmesg output:


    > 8139too Fast Ethernet driver 0.9.26


    That card may produce much CPU load and other problems. But it's cheap.
    And there seem to be many variantions.

    I would first change the card, against another 8139 or against an Intel
    e100. I wouldn't change to a 3Com card - there may come other problems.

    Viele Gruesse
    Helmut

    "Ubuntu" - an African word, meaning "Slackware is too hard for me".


  4. Re: IRQ issues and net connection errors

    On Wed, 15 Oct 2008 04:15:05 -0500, No_One wrote:

    >I can't tell if the errors are on my end or on the providers end.


    Your end :/ Receive errors and framing happen at receiver, but you're
    using a popular but undistinguished NIC chip...
    >
    >I'm having some broadband problems...not often, but sometimes.
    >
    >From ifconfig
    >
    >eth0 Link encap:Ethernet HWaddr 00:E0:29:5E:FB:48
    > UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
    > RX packets:1532523 errors:3332 dropped:0 overruns:0 frame:4
    > TX packets:361792 errors:0 dropped:0 overruns:3 carrier:0
    > collisions:0 txqueuelen:100
    > RX bytes:659392678 (628.8 Mb) TX bytes:70863489 (67.5 Mb)
    > Interrupt:9 Base address:0x9000


    For comparison:
    eth0 Link encap:Ethernet HWaddr 00:B00:30:E0:3F
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:1329121 errors:0 dropped:0 overruns:0 frame:0
    TX packets:819365 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:7
    RX bytes:1721807996 (1.6 GiB) TX bytes:76843090 (73.2 MiB)
    Interrupt:5 Base address:0xec00

    >
    >The loopback entry is showing no errors.


    Of course not, no NIC is seeing that traffic
    >
    >From syslog:
    >
    >eth0: Too much work at interrupt, IntrStatus=0x0001.

    ^^^^^^^^^^^^^^^^^^^^^^^^^--> bad news...
    >8139too Fast Ethernet driver 0.9.26


    Bad hardware -- see if you can pick up an Intel pro/100 card, I used to
    buy them at computer markets for AU$4 s/h, threw out all my Realteks
    and only use Intel pro/100 here, except one box has builtin 3com. Damn
    good card from retired ex-govt or business PCs (and the sellers have no
    idea that the Intel is so much better than also ran NICs).

    >eth0: SMC1211TX EZCard 10/100 (RealTek RTL8139) at 0xd0d49000, 00:e0:29:5e:fb:48, IRQ 9

    ^^^^^^^^^--> met one of these, a right PITA, only decent home
    for the thing is the bin.

    >eth0: Setting half-duplex based on auto-negotiated partner ability 0000.


    Hmm, okay if that's what the modem does.

    >PCI: Found IRQ 9 for device 00:07.2
    >PCI: Sharing IRQ 9 with 00:10.0
    >uhci.c: USB UHCI at I/O 0x1020, IRQ 9
    >usb.c: new USB bus registered, assigned bus number 1
    >hub.c: USB hub found
    >hub.c: 2 ports detected


    Not so nice, sharing interrupts. Try moving the NIC to another slot,
    perhaps it will score IRQ 10 all on its lonesome?
    >
    >As noted in the output both the network card and the USB hub are sharing IRQ 9


    Yeah. not good.
    >
    >My question is, should both items be sharing the same IRQ and since I have
    >no usb devices attached to my machine can I just chmod 644 rc.hotplug and
    >forget about it....do I need hotplug for anything other than usb attachments.


    Try another slot ... tricks me every time I see someone use chmod 644 ...
    instead of some my head is more comfortable with and therefore sane
    sounding like chmod -x ...

    Grant.
    --
    http://bugsplatter.id.au/

  5. Re: IRQ issues and net connection errors

    On 10/15/2008 11:15 AM, No_One wrote:

    > PCI: Found IRQ 9 for device 00:10.0
    > PCI: Sharing IRQ 9 with 00:07.2
    > eth0: SMC1211TX EZCard 10/100 (RealTek RTL8139) at 0xd0d49000,
    > 00:e0:29:5e:fb:48, IRQ 9


    > PCI: Found IRQ 9 for device 00:07.2
    > PCI: Sharing IRQ 9 with 00:10.0
    > uhci.c: USB UHCI at I/O 0x1020, IRQ 9


    > As noted in the output both the network card and the USB hub are sharing IRQ 9


    Try to get another interrupt by inserting the network card on another
    PCI slot.

    Ciao
    Giovanni
    --
    A computer is like an air conditioner,
    it stops working when you open Windows.
    Registered Linux user #337974 < http://giovanni.homelinux.net/ >

  6. Re: IRQ issues and net connection errors

    Thanks everyone for the pointers and info. I realize the question was a
    freshman Linux question, but, I got spoiled...things just alwasy, generally
    worked.

    Again, thanks all for the time and info, it's appreciated.

    ken

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