Yes, it seems related to routing. Before such thing was not happening (maybe
because TRIE was operating better?).
Here is info at "peak time", i disable nmi_watchdog now, so garbage collector
will not be triggered by nmi watchdog.
rt_cache|rt_cache|rt_cache|rt_cache|rt_cache|rt_cache|rt_cache|rt_cache|
rt_cache|rt_cache|rt_cache|rt_cache|rt_cache|rt_cache|rt_cache|rt_cache|
rt_cache|
entries| in_hit|in_slow_|in_slow_|in_no_ro| in_brd|in_marti|in_marti|
out_hit|out_slow|out_slow|gc_total|gc_ignor|gc_goal_|gc_dst_o|in_hlist|
out_hlis|
| | tot| mc| ute| | an_dst|
an_src| | _tot| _mc| | ed| miss| verflow|
_search|t_search|
247011| 2255410| 162866| 0| 610| 5| 0| 0|
33761| 8574| 0| 165475| 165307| 0| 0|10407428| 174948|
251810| 43087| 2782| 0| 9| 0| 0| 0|
618| 122| 0| 2912| 2909| 0| 0| 241946| 3796|
256277| 43035| 2739| 0| 9| 0| 0| 0|
595| 121| 0| 2867| 2864| 0| 0| 243724| 3748|
260177| 43596| 2647| 0| 8| 0| 0| 0|
672| 123| 0| 2778| 2776| 0| 0| 246880| 4048|
232741| 42270| 2759| 0| 15| 0| 0| 0|
665| 135| 0| 2910| 2907| 0| 0| 233990| 3938|
226623| 42615| 2792| 0| 11| 0| 0| 0|
723| 132| 0| 2935| 2932| 0| 0| 218378| 3862|
233190| 42397| 2778| 0| 8| 0| 0| 0|
675| 128| 0| 2913| 2909| 0| 0| 214258| 3703|
239093| 42342| 2713| 0| 9| 0| 0| 0|
764| 126| 0| 2847| 2845| 0| 0| 216453| 4080|
150539| 36992| 7564| 0| 58| 0| 0| 0|
539| 283| 0| 7902| 7900| 0| 0| 93459| 1996|
154441| 40258| 4422| 0| 12| 0| 0| 0|
655| 212| 0| 4644| 4640| 0| 0| 77271| 1458|
On one "crash" i got
Mar 27 11:27:15 205.177.186.74 [ 7141.156100] dst cache overflow
Mar 27 11:27:15 205.177.186.74 [ 7141.002291] dst cache overflow
Mar 27 11:27:15 205.177.186.74 [ 7141.162756] dst cache overflow
So i increase now routes amount more than 512K to 5120K, and will see more.
On Thu, 27 Mar 2008 08:03:25 +0100, Eric Dumazet wrote
> David Miller:
> > From: "Denys Fedoryshchenko" <denys@xxxxxxxxxxx>
> > Date: Thu, 27 Mar 2008 08:35:06 +0200
> >
> >> It seems i am having very bad luck with 2.6.27. As Linus told, it have
to be
> >> released soon, but it is crashing like hell on high network load.
> >
> > That's amazing, you've taken a trip into the future and are running
> > 2.6.27 already, please let me borrow your time machine :-)
> >
> > More seriously, there is obviously something very unique to your
> > setup or else everyone would be reporting this crash, and we have
> > to find out what that might be.
> >
> > There seems to be bunch of netfilter stuff in your traces, but
> > the top of the trace is somewhere totally unrelated. This is
> > a common reoccurance in your crash traces, making them less
> > useful than they could be.
> >
> > I know you asked before what can be done to improve the traces,
> > but I'm not an x86 expert so I have no idea how to help you
> > in that area.
> >
> > Patrick, could you see if you can make any sense of his log?
> > I see conttrack a lot in the backtraces.
>
> I can see rt_garbage_collect() involved here. This one might explain
> very long delays in softirq processing, and eventually crashes...
>
> Denys, could you post :
>
> grep . /proc/sys/net/ipv4/route/*
>
> rtstat -c1 -i10
>
> So that we can check if you should first change route cache tunables
> :)
>
> >
> > Thanks.
> >
> >> Here is a message i got over syslog on last crash (it was 2.6.25-rc6-
git6),
> >> available also at http://www.nuclearcat.com/files/crash_2.6.25.txt
> >>
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] BUG: NMI Watchdog detected LOCKUP
> >> Mar 26 02:27:14 ROUTER on CPU1, ip c02ad109, registers:
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] Process snmpd (pid: 2327,
ti=c092e000
> >> task=f7459080 task.ti=f70b7000)
> >> Mar 26 02:27:14 ROUTER
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] Stack:
> >> Mar 26 02:27:14 ROUTER c092eb14
> >> Mar 26 02:27:14 ROUTER c011991e
> >> Mar 26 02:27:14 ROUTER f750d600
> >> Mar 26 02:27:14 ROUTER f750d600
> >> Mar 26 02:27:14 ROUTER c0378058
> >> Mar 26 02:27:14 ROUTER 00000001
> >> Mar 26 02:27:14 ROUTER c092eb34
> >> Mar 26 02:27:14 ROUTER c0119b3b
> >> Mar 26 02:27:14 ROUTER
> >> Mar 26 02:27:14 ROUTER [ 4698.694693]
> >> Mar 26 02:27:14 ROUTER 00000000
> >> Mar 26 02:27:14 ROUTER 00000001
> >> Mar 26 02:27:14 ROUTER 00000082
> >> Mar 26 02:27:14 ROUTER f708af88
> >> Mar 26 02:27:14 ROUTER c0378058
> >> Mar 26 02:27:14 ROUTER 00000001
> >> Mar 26 02:27:14 ROUTER c092eb3c
> >> Mar 26 02:27:14 ROUTER c0119bfe
> >> Mar 26 02:27:14 ROUTER
> >> Mar 26 02:27:14 ROUTER [ 4698.694693]
> >> Mar 26 02:27:14 ROUTER c092eb50
> >> Mar 26 02:27:14 ROUTER c012f19c
> >> Mar 26 02:27:14 ROUTER 00000000
> >> Mar 26 02:27:14 ROUTER f708af88
> >> Mar 26 02:27:14 ROUTER c0378058
> >> Mar 26 02:27:14 ROUTER c092eb74
> >> Mar 26 02:27:14 ROUTER c011652a
> >> Mar 26 02:27:14 ROUTER 00000000
> >> Mar 26 02:27:14 ROUTER
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] Call Trace:
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c011991e>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER task_rq_lock+0x31/0x58
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0119b3b>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER try_to_wake_up+0x19/0xd1
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0119bfe>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER default_wake_function+0xb/0xd
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c012f19c>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER autoremove_wake_function+0xf/0x33
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c011652a>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER __wake_up_common+0x2f/0x5a
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c01189b8>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER __wake_up+0x28/0x3b
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c01201a3>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER wake_up_klogd+0x2e/0x31
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c012033d>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER release_console_sem+0x197/0x19f
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0120747>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER vprintk+0x295/0x2e5
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<f899634c>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER death_by_timeout+0x8b/0xa3 [nf_conntrack]
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<f8999d08>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER tcp_packet+0x931/0x9e5 [nf_conntrack]
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c01207ac>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER printk+0x15/0x17
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c011fb65>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER warn_on_slowpath+0x2a/0x51
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c011764a>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER __update_rq_clock+0x1c/0x126
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0116ab3>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER update_curr+0x48/0x64
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<f89961ed>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER nf_ct_invert_tuple+0x63/0x6f [nf_conntrack]
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<f8996cca>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER nf_conntrack_tuple_taken+0xf8/0x100 [nf_conntrack]
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<f899850c>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER __nf_ct_helper_find+0x2c/0x90 [nf_conntrack]
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<f8996b95>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER nf_conntrack_alter_reply+0x4a/0x87 [nf_conntrack]
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<f8974976>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER nf_nat_setup_info+0x3cc/0x55a [nf_nat]
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c011701c>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER dequeue_rt_entity+0x88/0x171
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0117127>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER dequeue_rt_stack+0x22/0x27
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0117425>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER enqueue_task_rt+0x19/0x2c
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c011617f>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER enqueue_task+0xd/0x18
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c01161c0>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER activate_task+0x1e/0x2b
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0119bb1>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER try_to_wake_up+0x8f/0xd1
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0119c1b>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER wake_up_process+0xf/0x11
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c013dfa1>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER softlockup_tick+0x9d/0x10b
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0126f5c>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER run_local_timers+0x17/0x19
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c01272fa>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER update_process_times+0x24/0x49
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0135f4c>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER tick_periodic+0x62/0x6e
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0135f71>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER tick_handle_periodic+0x19/0x68
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c010e87b>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER smp_apic_timer_interrupt+0x6c/0x81
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0104344>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER apic_timer_interrupt+0x28/0x30
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c02ad202>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER _spin_lock_bh+0x20/0x22
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c02751fa>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER rt_garbage_collect+0x132/0x27a
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0262d95>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER dst_alloc+0x19/0x63
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0276eb1>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER ip_route_input+0x6b9/0xbd9
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0278898>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER ip_rcv_finish+0x2c/0x29a
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0278ef8>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER ip_rcv+0x202/0x22c
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c025ee4e>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER netif_receive_skb+0x33e/0x3a9
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c02612c2>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER process_backlog+0x62/0xb5
> >> Mar 26 02:27:14 ROUTER [ 4698.694693] [<c0260d27>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER net_rx_action+0x8f/0x191
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] [<c01240a7>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER __do_softirq+0x64/0xcd
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] [<c0105f0a>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER do_softirq+0x55/0x89
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] [<c0123f88>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER local_bh_enable+0x61/0x6d
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] [<c0257689>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER lock_sock_nested+0x83/0x8b
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] [<c0292e58>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER udp_destroy_sock+0xd/0x20
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] [<c0257b9e>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER sk_common_release+0x15/0x60
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] [<c02924a4>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER udp_lib_close+0x8/0xa
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] [<c0299006>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER inet_release+0x42/0x48
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] [<c025625b>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER sock_release+0x14/0x60
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] [<c02565d9>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER sock_close+0x29/0x30
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] [<c015a6a2>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER __fput+0x93/0x135
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] [<c015a8e2>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER fput+0x17/0x19
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] [<c01583dc>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER filp_close+0x47/0x51
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] [<c0159414>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER sys_close+0x68/0x9d
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] [<c0103876>]
> >> Mar 26 02:27:14 ROUTER ?
> >> Mar 26 02:27:14 ROUTER sysenter_past_esp+0x5f/0x85
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] =======================
> >> Mar 26 02:27:14 ROUTER [ 4698.694694] Code:
> >> Mar 26 02:27:14 ROUTER 94
> >> Mar 26 02:27:14 ROUTER c0
> >> Mar 26 02:27:14 ROUTER 84
> >> Mar 26 02:27:14 ROUTER c0
> >> Mar 26 02:27:14 ROUTER b9
> >> Mar 26 02:27:14 ROUTER 01
> >> Mar 26 02:27:14 ROUTER 00
> >> Mar 26 02:27:14 ROUTER 00
> >> Mar 26 02:27:14 ROUTER 00
> >> Mar 26 02:27:14 ROUTER 75
> >> Mar 26 02:27:14 ROUTER 09
> >> Mar 26 02:27:14 ROUTER f0
> >> Mar 26 02:27:14 ROUTER 81
> >> Mar 26 02:27:14 ROUTER 02
> >> Mar 26 02:27:14 ROUTER 00
> >> Mar 26 02:27:14 ROUTER 00
> >> Mar 26 02:27:14 ROUTER 00
> >> Mar 26 02:27:14 ROUTER 01
> >> Mar 26 02:27:14 ROUTER 30
> >> Mar 26 02:27:14 ROUTER c9
> >> Mar 26 02:27:14 ROUTER 5d
> >> Mar 26 02:27:14 ROUTER 89
> >> Mar 26 02:27:14 ROUTER c8
> >> Mar 26 02:27:14 ROUTER c3
> >> Mar 26 02:27:14 ROUTER 55
> >> Mar 26 02:27:14 ROUTER ba
> >> Mar 26 02:27:14 ROUTER 00
> >> Mar 26 02:27:14 ROUTER 01
> >> Mar 26 02:27:14 ROUTER 00
> >> Mar 26 02:27:14 ROUTER 00
> >> Mar 26 02:27:14 ROUTER 89
> >> Mar 26 02:27:14 ROUTER e5
> >> Mar 26 02:27:14 ROUTER f0
> >> Mar 26 02:27:14 ROUTER 66
> >> Mar 26 02:27:14 ROUTER 0f
> >> Mar 26 02:27:14 ROUTER c1
> >> Mar 26 02:27:14 ROUTER 10
> >> Mar 26 02:27:14 ROUTER 38
> >> Mar 26 02:27:14 ROUTER f2
> >> Mar 26 02:27:14 ROUTER 74
> >> Mar 26 02:27:14 ROUTER 06
> >> Mar 26 02:27:14 ROUTER f3
> >> Mar 26 02:27:14 ROUTER 90
> >> Mar 26 02:27:14 ROUTER unparseable log message: "<8a> "
> >> Mar 26 02:27:14 ROUTER 10
> >> Mar 26 02:27:14 ROUTER eb
> >> Mar 26 02:27:14 ROUTER f6
> >> Mar 26 02:27:14 ROUTER 5d
> >> Mar 26 02:27:14 ROUTER c3
> >> Mar 26 02:27:14 ROUTER 55
> >> Mar 26 02:27:14 ROUTER 89
> >> Mar 26 02:27:14 ROUTER e5
> >> Mar 26 02:27:14 ROUTER f0
> >> Mar 26 02:27:14 ROUTER 81
> >> Mar 26 02:27:14 ROUTER 28
> >> Mar 26 02:27:14 ROUTER 00
> >> Mar 26 02:27:14 ROUTER 00
> >> Mar 26 02:27:14 ROUTER 00
> >> Mar 26 02:27:14 ROUTER 01
> >> Mar 26 02:27:14 ROUTER 74
> >> Mar 26 02:27:14 ROUTER 05
> >> Mar 26 02:27:14 ROUTER e8
> >> Mar 26 02:27:14 ROUTER 64
> >> Mar 26 02:27:14 ROUTER fd
> >> Mar 26 02:27:14 ROUTER
> > --
> > To unsubscribe from this list: send the line "unsubscribe netdev" in
> > the body of a message to majordomo@xxxxxxxxxxxxxxx
> > More majordomo info at http://vger.kernel.org/majordomo-info.html
> >
> >
--
Denys Fedoryshchenko
Technical Manager
Virtual ISP S.A.L.
--
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