Messages in this thread | | | From | Roy Sigurd Karlsbakk <> | Subject | tuning linux for high network performance? | Date | Wed, 23 Oct 2002 12:18:18 +0200 |
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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.
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