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    SubjectRe: 2.4.x high irq contention
    I don't know much about your network load, but if you have a lot, then you
    should probably throw away the 8139 network card and use tulip or 3com instead.

    Regards,
    Stephan


    On Tue, 22 Apr 2003 10:32:01 +0700
    Anton Petrusevich <casus@mail.ru> wrote:

    > Hi people,
    >
    > This is 2.4.21-pre4aa3, but the same applies to 2.4.20-vanilla, and i
    > think to any 2.4.x. The NIC is RTL-8139(8139too). I would really like to
    > know what could be done in this situation. The machine (p3-1GHz) is almost
    > unrespobsible. Yes, there are really network card interrupts. So, here it
    > goes.
    > # readprofile -m /boot/System.map | sort -nr +2 | head -20
    > 2600 handle_IRQ_event 23.2143
    > 268 system_call 4.7857
    > 184 fget 3.8333
    > 123 sock_poll 2.5625
    > 421 kfree 2.1927
    > 101 __free_pages 2.1042
    > 288 do_softirq 2.0000
    > 326 skb_copy_and_csum_dev 1.8523
    > 56 restore_fpu 1.7500
    > 232 send_sig_info 1.6111
    > 123 poll_freewait 1.5375
    > 174 __wake_up 1.3594
    > 695 do_schedule 1.2776
    > 19 sockfs_delete_dentry 1.1875
    > 70 del_timer 1.0938
    > 592 save_i387 1.0278
    > 17 ret_from_sys_call 1.0000
    > 111 skb_release_data 0.9911
    > 58 __generic_copy_to_user 0.9062
    > 115 do_pollfd 0.8984
    >
    > --
    > Anton Petrusevich
    >
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