2.4.x high irq contention

From: Anton Petrusevich (casus@mail.ru)
Date: Mon Apr 21 2003 - 22:32:01 EST

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

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

This archive was generated by hypermail 2b29 : Wed Apr 23 2003 - 22:00:31 EST