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    SubjectRe: e1000e 2.6.30.1 massive packet loss
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    > What do you call 20-50% packet loss ?

    sorry that's just the approximate average loss mtr was reporting. I
    realize it's not the most accurate test, but I have no problems before
    changing to .1 or after downgrading from it.

    > (Losses to icmp flood itself, or tcp losses ?
    > Is the machine answering to icmp flood, or is it the origin ?

    mtr uses all icmp, but considering web browsing and I'm sure even dns
    was affected I'd say all of it. I haven't done further investigation.
    it was the origin and the losses occured between my desktop
    machine(2.6.31.x) and my linksys wrt54gl(on openwrt) router. Since I
    know the cable is good, and the losses haven't happened before or
    since, and I even tried rebooting the router, I'm fairly confident
    that it's a result of changes between the 2 kernel versions.

    > Are you saying packet loss was not occurring with 2.6.30 ?

    yes.

    > Could you describe your methodology ?
    >
    > You could give us results of "cat /proc/interrupts" from both
    > versions, because it sounds as an interrupt affinity problem.

    these are from 2.6.30 I'll send .1 in a bit.
    > # cat /proc/interrupts


    CPU0 CPU1 CPU2 CPU3
    0: 1605 0 0 0 XT-PIC-XT timer
    1: 2 0 0 0 XT-PIC-XT i8042
    2: 0 0 0 0 XT-PIC-XT cascade
    4: 3 0 0 0 XT-PIC-XT ohci1394
    5: 40347741 0 0 0 XT-PIC-XT
    uhci_hcd:usb3, EMU10K1
    6: 2 0 0 0 XT-PIC-XT floppy
    8: 4738 0 0 0 XT-PIC-XT rtc0
    9: 0 0 0 0 XT-PIC-XT
    acpi, ehci_hcd:usb2, uhci_hcd:usb6
    10: 0 0 0 0 XT-PIC-XT
    uhci_hcd:usb4
    11: 923781 0 0 0 XT-PIC-XT
    ehci_hcd:usb1, uhci_hcd:usb5, uhci_hcd:usb7, uhci_hcd:usb8
    12: 4 0 0 0 XT-PIC-XT i8042
    25: 428267 425244 423627 427244 PCI-MSI-edge i915
    26: 1194972 1211065 1191149 1200914 PCI-MSI-edge ahci
    27: 7287597 7270695 7291505 7280533 PCI-MSI-edge eth0
    NMI: 0 0 0 0 Non-maskable interrupts
    LOC: 66007880 72160316 45190647 33707930 Local timer interrupts
    SPU: 0 0 0 0 Spurious interrupts
    RES: 67599 68493 54742 53268 Rescheduling interrupts
    CAL: 288 295 363 323 Function call interrupts
    TLB: 133835 49505 43942 48309 TLB shootdowns
    TRM: 0 0 0 0 Thermal event interrupts
    THR: 0 0 0 0 Threshold APIC interrupts
    ERR: 0
    MIS: 0

    > # tc -s -d qdisc

    qdisc pfifo_fast 0: dev eth0 root bands 3 priomap 1 2 2 2 1 2 0 0 1 1
    1 1 1 1 1 1
    Sent 33951429966 bytes 12436885 pkt (dropped 0, overlimits 0 requeues 1375)
    rate 0bit 0pps backlog 0b 0p requeues 1375

    > # ifconfig -a

    eth0 Link encap:Ethernet HWaddr 00:21:9B:06:4C:C9
    inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0
    inet6 addr: fe80::221:9bff:fe06:4cc9/64 Scope:Link
    UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
    RX packets:16135626 errors:0 dropped:0 overruns:0 frame:0
    TX packets:28308711 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:100
    RX bytes:2181880167 (2080.8 Mb) TX bytes:34811667228 (33198.9 Mb)
    Memory:fdfc0000-fdfe0000

    lo Link encap:Local Loopback
    inet addr:127.0.0.1 Mask:255.0.0.0
    inet6 addr: ::1/128 Scope:Host
    UP LOOPBACK RUNNING MTU:16436 Metric:1
    RX packets:92471 errors:0 dropped:0 overruns:0 frame:0
    TX packets:92471 errors:0 dropped:0 overruns:0 carrier:0
    collisions:0 txqueuelen:0
    RX bytes:11927979 (11.3 Mb) TX bytes:11927979 (11.3 Mb)




    --
    Caleb Cushing

    http://xenoterracide.blogspot.com


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