The story with excessive timers usage continue.
Here is my results from /proc/timer_stats for 30 seconds (150Mbps traffic)
This is "non-netfilter" related events
Router-Dora ~ # cat /proc/timer_stats |grep -v '__nf'
Timer Stats Version: v0.2
Sample period: 30.002 s
Overflow: 45261 entries
300, 3308 insmod ipmi_init_msghandler (ipmi_timeout)
1032, 1 swapper neigh_table_init_no_netlink
(neigh_periodic_timer)
3, 0 swapper sk_reset_timer (tcp_delack_timer)
298, 1342 vconfig garp_join_timer_arm (garp_join_timer)
1621, 0 swapper qdisc_watchdog_schedule (qdisc_watchdog)
169, 6 ksoftirqd/1 qdisc_watchdog_schedule (qdisc_watchdog)
3, 6 ksoftirqd/1 neigh_add_timer (neigh_timer_handler)
1417, 0 swapper qdisc_watchdog_schedule (qdisc_watchdog)
2, 6 ksoftirqd/1 neigh_add_timer (neigh_timer_handler)
294, 1352 vconfig garp_join_timer_arm (garp_join_timer)
15, 0 swapper e1000_intr (e1000_watchdog)
3, 1 swapper enqueue_task_rt (sched_rt_period_timer)
60, 0 swapper clocksource_register (clocksource_watchdog)
2, 5003 sshd sk_reset_timer (tcp_write_timer)
30D, 1 swapper schedule_delayed_work_on (delayed_work_timer_fn)
30, 1128 insmod queue_delayed_work (delayed_work_timer_fn)
30D, 1 swapper schedule_delayed_work_on (delayed_work_timer_fn)
1, 0 swapper neigh_add_timer (neigh_timer_handler)
1, 0 swapper neigh_add_timer (neigh_timer_handler)
6318 total events, 210.429 events/sec
And here is netfilter usage, looks like ....
I did also sysctl -w net.netfilter.nf_conntrack_acct=0
1, 0 swapper __nf_ct_refresh_acct (death_by_timeout)
1, 0 swapper __nf_ct_refresh_acct (death_by_timeout)
1, 0 swapper __nf_ct_refresh_acct (death_by_timeout)
1, 0 swapper __nf_ct_refresh_acct (death_by_timeout)
1, 0 swapper __nf_ct_refresh_acct (death_by_timeout)
1, 0 swapper __nf_conntrack_confirm (death_by_timeout)
1, 0 swapper __nf_conntrack_confirm (death_by_timeout)
1, 0 swapper __nf_conntrack_confirm (death_by_timeout)
1, 0 swapper __nf_conntrack_confirm (death_by_timeout)
1, 0 swapper __nf_conntrack_confirm (death_by_timeout)
1, 0 swapper __nf_conntrack_confirm (death_by_timeout)
1, 0 swapper __nf_conntrack_confirm (death_by_timeout)
1, 0 swapper __nf_conntrack_confirm (death_by_timeout)
....
Router-Dora ~ # cat /proc/timer_stats |grep '__nf'|wc -l
1005
Is it important to do so much calls to timers in conntrack?
Precision on it is not more than 1 second.
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