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Subject2.4.x high irq contention
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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