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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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