help me please :)
1. Problem:
The big load (~30Mbit/sec real traffic + iptables with connection tracking) results to
that the server does not respond some time.
And kernel write message:
...
Jun 3 07:46:22 router1 kernel: Neighbour table overflow.
Jun 3 07:46:22 router1 last message repeated 9 times
Jun 3 07:49:59 router1 kernel:
Jun 3 07:49:59 router1 kernel: wait_on_irq, CPU 3:
Jun 3 07:49:59 router1 kernel: irq: 0 [ 0 0 0 0 ]
Jun 3 07:49:59 router1 kernel: bh: 1 [ 0 2 7 0 ]
Jun 3 07:49:59 router1 kernel: Stack dumps:
Jun 3 07:49:59 router1 kernel: CPU 0:00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Jun 3 07:49:59 router1 kernel: 00000000 15a13607 00000000 00000000 00000000 00000000 00000000 00000000
Jun 3 07:49:59 router1 kernel: 000081a4 00000d94 3e8c2d80 3e8c1920 3cb99ad4 00000000 00010000 00000008
Jun 3 07:49:59 router1 kernel: Call Trace: [sock_wfree+0/64]
Jun 3 07:49:59 router1 kernel:
Jun 3 07:49:59 router1 kernel: CPU 1:80c00002 008000db 80008000 00800446 3c3cbc3c ec3c3c34 3c1c3c3c 4c1c3c3c
Jun 3 07:49:59 router1 kernel: 00420000 0080007f 042e0000 008000d7 3c7c3c3c cc3c3c3c 3e3c383c 5c3c7c3c
Jun 3 07:49:59 router1 kernel: 00220040 000000df 20044040 000000ff 3c7e3c3c 9c3c1c3c 3c3e3c38 5c3c3c36
Jun 3 07:49:59 router1 kernel: Call Trace: [alloc_skb+246/448] [e1000_xmit_frame+1077/1104] [__alloc_pages+234/824] [
Jun 3 07:49:59 router1 kernel: [e1000_clean_rx_irq+1024/1036] [e1000_clean_rx_irq+1024/1036] [add_timer_randomness+204
Jun 3 07:49:59 router1 kernel: [schedule_task+191/204] [handle_scancode+685/696] [scheduler_tick+1048/1104] [update_pr
Jun 3 07:49:59 router1 kernel: [ip_conntrack_tuple_taken+72/148] [ip_nat_used_tuple+31/40] [tcp_unique_tuple+190/224]
Jun 3 07:49:59 router1 kernel: [ip_nat_cheat_check+38/64] [tcp_manip_pkt+99/124] [ip_nat_cheat_check+38/64] [manip_pkt
Jun 3 07:49:59 router1 kernel: [qdisc_restart+24/596] [dev_queue_xmit+357/1096] [ip_finish_output2+199/280] [nf_hook_s
Jun 3 07:49:59 router1 kernel: [ip_forward_finish+87/96] [nf_hook_slow+276/404] [ip_forward+503/608] [scheduler_tick+1
Jun 3 07:49:59 router1 kernel: [smp_apic_timer_interrupt+243/284] [bh_action+215/220] [tasklet_hi_action+99/160] [ksof
Jun 3 07:49:59 router1 kernel:
Jun 3 07:49:59 router1 kernel: CPU 2:000666e8 e932e674 e02eb7a4 e932e6cc e932e6cc 00000000 00000000 00000000
Jun 3 07:49:59 router1 kernel: e932e674 e932e674 e932e674 e932e674 e932e674 00000002 00000000 c8e195bf
Jun 3 07:49:59 router1 kernel: 00000000 00000000 00000000 00000000 00000003 00000004 00010000 040fa8c0
Jun 3 07:49:59 router1 kernel: Call Trace: [death_by_timeout+0/164] [fib_convert_rtentry+260/856] [destroy_conntrack+
Jun 3 07:49:59 router1 kernel: [death_by_timeout+0/164] [destroy_conntrack+0/292] [nf_sockopt+240/280] [death_by_timeo
Jun 3 07:49:59 router1 kernel: [destroy_conntrack+0/292] [death_by_timeout+0/164] [destroy_conntrack+0/292] [death_by_
Jun 3 07:49:59 router1 kernel: [death_by_timeout+0/164] [fib_convert_rtentry+260/856] [destroy_conntrack+0/292] [death
Jun 3 07:49:59 router1 kernel: [destroy_conntrack+0/292] [death_by_timeout+0/164] [destroy_conntrack+0/292] [death_by_
Jun 3 07:49:59 router1 last message repeated 2 times
Jun 3 07:49:59 router1 kernel: [destroy_conntrack+0/292] [death_by_timeout+0/164] [destroy_conntrack+0/292] [death_by_
Jun 3 07:49:59 router1 kernel:
Jun 3 07:49:59 router1 kernel: CPU 3:e161bf34 e03196dd 00000003 00000180 00000000 e161bf60 e0108d3d e03196f2
Jun 3 07:49:59 router1 kernel: e161bf94 e1b2b000 00000001 e161bf7c e01ff258 e161bf94 e161bf94 00000282
Jun 3 07:49:59 router1 kernel: e1b2b56c e1b2b16c e161bf9c e0121cac e1b2b000 e161a000 e161a65c ffffffff
Jun 3 07:49:59 router1 kernel: Call Trace: [__global_cli+189/296] [flush_to_ldisc+300/376] [__run_task_queue+172/188]
Jun 3 07:49:59 router1 kernel: [arch_kernel_thread+40/56]
Jun 3 07:49:59 router1 kernel:
2. hardware
- m/b "Intel Server Board SE7500WV2"
- CPU 2x Intel(R) XEON(TM) CPU 1.80GHz + enable "Hyper Threading"
- 512Mb ram
3. software:
- Debian Woody 3.0
- kernel Linux 2.4.20-SuSE.12
network driver:
Intel(R) PRO/1000 Network Driver - version 4.4.19-k2
thanks.
bye.
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