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Date: Fri, 11 Jan 2008 11:53:19 +0300 From: Badalian Vyacheslav <slavon@...telecom.ru> To: netdev@...r.kernel.org Subject: Re: HTB classify perfomance New info. Wait some time and reset oprifile statistic (i think info abount ipt_unregister_table its get what run some script... ). That clear info after add FILTER: First PC CPU: P4 / Xeon, speed 3409.96 MHz (estimated) Counted GLOBAL_POWER_EVENTS events (time during which processor is not stopped) with a unit mask of 0x01 (mandatory) count 100000 samples % app name symbol name 1158171 19.1292 vmlinux ipt_do_table 722416 11.9319 vmlinux e1000_intr 627406 10.3627 vmlinux u32_classify 565286 9.3367 vmlinux e1000_irq_enable 269309 4.4481 vmlinux htb_dequeue 191016 3.1550 vmlinux ip_route_input 187127 3.0907 vmlinux sfq_dequeue 172775 2.8537 vmlinux e1000_clean_tx_irq 154654 2.5544 vmlinux e1000_clean_rx_irq 146926 2.4267 vmlinux sfq_enqueue 116782 1.9289 vmlinux htb_add_to_wait_tree 79398 1.3114 vmlinux rb_erase 74411 1.2290 vmlinux e1000_xmit_frame 65451 1.0810 vmlinux kfree 59966 0.9904 vmlinux irq_entries_start 59893 0.9892 vmlinux eth_type_trans 55510 0.9168 vmlinux dev_queue_xmit 52688 0.8702 vmlinux e1000_alloc_rx_buffers > Hello all. > I N days try to tune system for best performance and see strange thing. > > Have N htb classes > root class is HTB. param: default 7 (if not classify - go to 1:7) > > filters classify only mached ip. others go to HTB DEFAULT rule. > > run oprofile: > First pc (htb and iptables compile in kernel): > CPU: P4 / Xeon, speed 3409.94 MHz (estimated) > Counted GLOBAL_POWER_EVENTS events (time during which processor is not > stopped) with a unit mask of 0x01 (mandatory) count 100000 > samples % app name symbol name > 743501 47.6081 vmlinux htb_classify > 208718 13.3647 vmlinux ipt_do_table > 94473 6.0493 vmlinux u32_classify > 43088 2.7590 vmlinux e1000_intr > 35086 2.2466 vmlinux e1000_clean_tx_irq > 34925 2.2363 vmlinux ip_route_input > 33972 2.1753 vmlinux e1000_irq_enable > 33788 2.1635 vmlinux htb_dequeue > 29197 1.8696 vmlinux e1000_clean_rx_irq > 20177 1.2920 vmlinux sfq_dequeue > 17825 1.1414 vmlinux sfq_enqueue > 15135 0.9691 vmlinux e1000_xmit_frame > 15123 0.9684 vmlinux eth_type_trans > 13081 0.8376 vmlinux kfree > 12153 0.7782 vmlinux dev_queue_xmit > > Second PC (htb and iptables is modules) > CPU: P4 / Xeon with 2 hyper-threads, speed 3192.35 MHz (estimated) > Counted GLOBAL_POWER_EVENTS events (time during which processor is not > stopped) with a unit mask of 0x01 (mandatory) count 100000 > samples % app name symbol name > 102108 30.7351 sch_htb (no symbols) > 21559 6.4894 vmlinux e1000_intr > 17428 5.2459 cls_u32 (no symbols) > 13887 4.1801 ip_tables (no symbols) > 11984 3.6072 sch_sfq (no symbols) > 11785 3.5473 vmlinux e1000_irq_enable > 9684 2.9149 vmlinux mwait_idle_with_hints > 9227 2.7774 vmlinux e1000_clean_rx_irq > 8686 2.6145 vmlinux e1000_clean_tx_irq > 6747 2.0309 vmlinux ip_route_input > 6533 1.9665 vmlinux irq_entries_start > 6419 1.9322 vmlinux e1000_xmit_frame > 5605 1.6871 vmlinux dev_queue_xmit > 4030 1.2131 vmlinux __kfree_skb > 3997 1.2031 vmlinux __qdisc_run > 3931 1.1833 vmlinux e1000_clean > 3565 1.0731 vmlinux net_rx_action > 3518 1.0589 vmlinux ip_rcv > 3377 1.0165 vmlinux getnstimeofday > 3215 0.9677 vmlinux rb_erase > 2973 0.8949 vmlinux eth_type_trans > 2707 0.8148 vmlinux ip_output > 2586 0.7784 vmlinux handle_fasteoi_irq > > Hmm.. strange... look to code htb_classify i see only one place where > it may get many CPU. > > ok... try to add to the end of tc batch file.. > filter add dev eth1 protocol ip parent 1:0 prio 5 u32 ht 800:: match > ip protocol 1 0x00 flowid 1:7 > filter add dev eth0 protocol ip parent 1:0 prio 5 u32 ht 800:: match > ip protocol 1 0x00 flowid 1:7 > (offtopic... strange... i not found that i can add filter without any > match) > > Wow! > CPU: P4 / Xeon, speed 3409.94 MHz (estimated) > Counted GLOBAL_POWER_EVENTS events (time during which processor is not > stopped) with a unit mask of 0x01 (mandatory) count 100000 > samples % app name symbol name > 153128 20.9497 vmlinux ipt_unregister_table > 121569 16.6321 vmlinux e1000_request_irq > 60727 8.3082 vmlinux e1000_update_itr > 47241 6.4631 vmlinux u32_delete > 25836 3.5347 vmlinux htb_dequeue > 18304 2.5042 vmlinux ipt_do_table > 15980 2.1862 vmlinux mwait_idle_with_hints > 15977 2.1858 vmlinux irq_entries_start > 13337 1.8247 vmlinux htb_classify > 12512 1.7118 vmlinux __ip_route_output_key > 8821 1.2068 vmlinux sfq_init > 8495 1.1622 vmlinux e1000_clean_rx_irq > 8408 1.1503 vmlinux htb_enqueue > 8018 1.0970 vmlinux e1000_xmit_frame > 7867 1.0763 vmlinux e1000_clean_tx_ring > 6336 0.8668 vmlinux htb_delete > 5828 0.7973 vmlinux ___pskb_trim > 5781 0.7909 vmlinux s_start > 5234 0.7161 vmlinux e1000_clean_rx_irq_ps > 4504 0.6162 vmlinux cache_alloc_refill > 4133 0.5654 vmlinux radix_tree_delete > > Second PC > CPU: P4 / Xeon with 2 hyper-threads, speed 3192.35 MHz (estimated) > Counted GLOBAL_POWER_EVENTS events (time during which processor is not > stopped) with a unit mask of 0x01 (mandatory) count 100000 > samples % app name symbol name > 37747 13.3616 sch_htb (no symbols) > 23606 8.3560 vmlinux e1000_intr > 18158 6.4275 cls_u32 (no symbols) > 14726 5.2127 ip_tables (no symbols) > 13137 4.6502 vmlinux e1000_irq_enable > 12307 4.3564 sch_sfq (no symbols) > 9974 3.5306 vmlinux mwait_idle_with_hints > 9855 3.4884 vmlinux e1000_clean_rx_irq > 9077 3.2131 vmlinux e1000_clean_tx_irq > 7293 2.5816 vmlinux irq_entries_start > 6956 2.4623 vmlinux ip_route_input > 6652 2.3547 vmlinux e1000_xmit_frame > 6202 2.1954 vmlinux dev_queue_xmit > 4403 1.5586 vmlinux __kfree_skb > 4230 1.4973 vmlinux net_rx_action > 4224 1.4952 vmlinux e1000_clean > 4042 1.4308 vmlinux __qdisc_run > 3513 1.2435 vmlinux ip_rcv > 3509 1.2421 vmlinux getnstimeofday > 3377 1.1954 vmlinux rb_erase > 3191 1.1295 vmlinux eth_type_trans > 2953 1.0453 vmlinux handle_fasteoi_irq > 2830 1.0018 vmlinux ip_output > > > Looks great! > I hope i found interesting place for optimization. > > Thanks. > Slavon. > -- > To unsubscribe from this list: send the line "unsubscribe netdev" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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