lkml.org 
[lkml]   [2002]   [Oct]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subjecttuning linux for high network performance?
Date
hi

I've got this video server serving video for VoD. problem is the P4 1.8 seems
to be maxed out by a few system calls. The below output is for ~50 clients
streaming at ~4.5Mbps. if trying to increase this to ~70, the CPU maxes out.

Does anyone have an idea?

bash-2.05# readprofile | sort -rn +2 | head -30
154203 default_idle 2409.4219
212723 csum_partial_copy_generic 916.9095
100164 handle_IRQ_event 695.5833
24979 system_call 390.2969
37300 e1000_intr 388.5417
119699 ide_intr 340.0540
30598 skb_release_data 273.1964
40740 do_softirq 195.8654
131818 do_wp_page 164.7725
9935 fget 155.2344
24747 kfree 154.6687
10911 del_timer 113.6562
11683 ip_conntrack_find_get 91.2734
4120 sock_poll 85.8333
9357 ip_ct_find_proto 83.5446
5194 sock_wfree 81.1562
4929 add_wait_queue 77.0156
8361 flush_tlb_page 74.6518
4571 remove_wait_queue 71.4219
2191 __brelse 68.4688
29477 skb_clone 68.2338
8562 do_gettimeofday 59.4583
5673 process_timeout 59.0938
11097 tcp_v4_send_check 57.7969
6124 kfree_skbmem 54.6786
17115 tcp_poll 53.4844
21130 nf_hook_slow 52.8250
8299 ip_ct_refresh 51.8687
15429 __kfree_skb 50.7533
1059 lru_cache_del 46.0435

roy
--
Roy Sigurd Karlsbakk, Datavaktmester
ProntoTV AS - http://www.pronto.tv/
Tel: +47 9801 3356

Computers are like air conditioners.
They stop working when you open Windows.

-
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/

\
 
 \ /
  Last update: 2005-03-22 13:30    [W:0.787 / U:0.512 seconds]
©2003-2011 Jasper Spaans. Advertise on this site