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Message-ID: <47D05778.6090006@samoylyk.sumy.ua>
Date: Thu, 06 Mar 2008 22:43:36 +0200
From: Oleksandr Samoylyk <oleksandr@...oylyk.sumy.ua>
To: netdev@...r.kernel.org
Subject: pppd soft lockups under load
Dear community,
I'm running a busy pptp-server which serves about 1500 users on about 80
Mbit/s (> 15000 packets/sec). I use poptop, traffic shaper and basic
firewall rules.
As for hardware it's a server on SuperMicro Server on X7DB8+ serverboard
server with 8 GB RAM on it running Ubuntu Server Edition.
As for problem, sometimes I get the following erors in logs:
[ 0.000000] BUG: soft lockup - CPU#3 stuck for 11s! [pppd:65437]
[ 0.000000] CPU 3:
[ 0.000000] Modules linked in: act_police sch_ingress cls_u32 sch_sfq
sch_htb xt_tcpmss iptable_mangle ppp_async crc_ccitt xt_multiport
xt_TCPMSS xt_state xt_limit xt_tcpudp nf_conntrack_pptp
nf_conntrack_proto_gre nf_nat_irc nf_conntrack_irc nf_nat_ftp
nf_conntrack_ftp iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack
iptable_filter ip_tables x_tables tcp_cubic pptp pppox ppp_generic slhc
parport_pc lp parport loop iTCO_wdt iTCO_vendor_support pcspkr
i5000_edac evdev edac_core shpchp pci_hotplug ext3 jbd mbcache sg sr_mod
cdrom sd_mod ata_piix aic94xx libsas scsi_transport_sas pata_acpi e1000
ata_generic libata scsi_mod fuse
[ 0.000000] Pid: 65437, comm: pppd Not tainted 2.6.24-11-server #1
[ 0.000000] RIP: 0010:[<ffffffff8823e528>] [<ffffffff8823e528>]
:nf_conntrack_proto_gre:gre_pkt_to_tuple+0xf8/0x1a8
[ 0.000000] RSP: 0018:ffff810225b4bbf8 EFLAGS: 00000297
[ 0.000000] RAX: 0000000000000010 RBX: 0000000000000014 RCX:
000000000000000d
[ 0.000000] RDX: ffff8101ed874034 RSI: ffff810209966693 RDI:
ffff810225b4bc9b
[ 0.000000] RBP: ffff810225b4bb70 R08: ffff810209966b40 R09:
ffff810225b4bcac
[ 0.000000] R10: ffff810209966b40 R11: ffffffff8823e430 R12:
ffffffff8020cfb6
[ 0.000000] R13: ffff810225b4bc98 R14: ffff810222dec600 R15:
ffff810001065c00
[ 0.000000] FS: 00007fac5a0226e0(0000) GS:ffff810228001f00(0000)
knlGS:0000000000000000
[ 0.000000] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 0.000000] CR2: 00007fac59f787b0 CR3: 00000001e2c5d000 CR4:
00000000000006e0
[ 0.000000] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 0.000000] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[ 0.000000]
[ 0.000000] Call Trace:
[ 0.000000] <IRQ> [<ffffffff8823e517>]
:nf_conntrack_proto_gre:gre_pkt_to_tuple+0xe7/0x1a8
[ 0.000000] [<ffffffff881fcdea>] :nf_conntrack:nf_ct_get_tuple+0x6a/0xd0
[ 0.000000] [<ffffffff881fda74>]
:nf_conntrack:nf_conntrack_in+0x184/0x5c0
[ 0.000000] [<ffffffff8040e631>] nf_iterate+0x61/0x90
[ 0.000000] [<ffffffff80414d00>] ip_rcv_finish+0x0/0x3b0
[ 0.000000] [<ffffffff8040e6fe>] nf_hook_slow+0x9e/0xf0
[ 0.000000] [<ffffffff80414d00>] ip_rcv_finish+0x0/0x3b0
[ 0.000000] [<ffffffff80415622>] ip_rcv+0x212/0x300
[ 0.000000] [<ffffffff803eefac>] netif_receive_skb+0x3ac/0x490
[ 0.000000] [<ffffffff8807c7a4>] :e1000:e1000_clean_rx_irq+0x1c4/0x590
[ 0.000000] [<ffffffff88079609>] :e1000:e1000_clean+0x69/0x250
[ 0.000000] [<ffffffff803f15e8>] net_rx_action+0x128/0x230
[ 0.000000] [<ffffffff80243cb5>] __do_softirq+0x75/0xe0
[ 0.000000] [<ffffffff8020d50c>] call_softirq+0x1c/0x30
[ 0.000000] <EOI> [<ffffffff8020ed25>] do_softirq+0x35/0x90
[ 0.000000] [<ffffffff80243ba4>] local_bh_enable_ip+0x54/0x60
[ 0.000000] [<ffffffff80410d4e>] rt_run_flush+0xce/0xd0
[ 0.000000] [<ffffffff80445233>] ip_mc_inc_group+0x193/0x250
[ 0.000000] [<ffffffff8044530a>] ip_mc_up+0x1a/0x60
[ 0.000000] [<ffffffff804400c0>] inetdev_event+0x190/0x510
[ 0.000000] [<ffffffff803fa0d9>] rtmsg_ifinfo+0x89/0x110
[ 0.000000] [<ffffffff80473121>] notifier_call_chain+0x31/0x60
[ 0.000000] [<ffffffff803f137d>] dev_open+0x7d/0x90
[ 0.000000] [<ffffffff803efb52>] dev_change_flags+0x92/0x1b0
[ 0.000000] [<ffffffff80440b40>] devinet_ioctl+0x5a0/0x750
[ 0.000000] [<ffffffff803e17cf>] sock_ioctl+0xcf/0x260
[ 0.000000] [<ffffffff802c2c5f>] do_ioctl+0x2f/0xa0
[ 0.000000] [<ffffffff802c2ef0>] vfs_ioctl+0x220/0x2c0
[ 0.000000] [<ffffffff802c3021>] sys_ioctl+0x91/0xb0
[ 0.000000] [<ffffffff8020c37e>] system_call+0x7e/0x83
[ 0.000000]
Mar 6 22:39:12 vpn pppd[135164]: Failed to set PPP kernel option flags:
Inappropriate ioctl for device
One of my CPUs goes 100%.
Latency increases significantly during this this (more than >100ms).
root@vpn:~# uname -a
Linux vpn 2.6.24-11-server #1 SMP Fri Feb 29 21:55:55 UTC 2008 x86_64
GNU/Linux
root@vpn:~# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5335 @ 2.00GHz
stepping : 7
cpu MHz : 2000.020
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni monitor
ds_cpl vmx tm2 ssse3 cx16 xtpr dca lahf_lm
bogomips : 4002.47
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5335 @ 2.00GHz
stepping : 7
cpu MHz : 2000.020
cache size : 4096 KB
physical id : 1
siblings : 4
core id : 0
cpu cores : 4
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni monitor
ds_cpl vmx tm2 ssse3 cx16 xtpr dca lahf_lm
bogomips : 4000.12
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 2
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5335 @ 2.00GHz
stepping : 7
cpu MHz : 2000.020
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 4
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni monitor
ds_cpl vmx tm2 ssse3 cx16 xtpr dca lahf_lm
bogomips : 4000.11
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5335 @ 2.00GHz
stepping : 7
cpu MHz : 2000.020
cache size : 4096 KB
physical id : 1
siblings : 4
core id : 1
cpu cores : 4
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni monitor
ds_cpl vmx tm2 ssse3 cx16 xtpr dca lahf_lm
bogomips : 4000.12
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 4
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5335 @ 2.00GHz
stepping : 7
cpu MHz : 2000.020
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 2
cpu cores : 4
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni monitor
ds_cpl vmx tm2 ssse3 cx16 xtpr dca lahf_lm
bogomips : 4000.10
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 5
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5335 @ 2.00GHz
stepping : 7
cpu MHz : 2000.020
cache size : 4096 KB
physical id : 1
siblings : 4
core id : 2
cpu cores : 4
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni monitor
ds_cpl vmx tm2 ssse3 cx16 xtpr dca lahf_lm
bogomips : 4000.12
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 6
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5335 @ 2.00GHz
stepping : 7
cpu MHz : 2000.020
cache size : 4096 KB
physical id : 0
siblings : 4
core id : 3
cpu cores : 4
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni monitor
ds_cpl vmx tm2 ssse3 cx16 xtpr dca lahf_lm
bogomips : 4000.09
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
processor : 7
vendor_id : GenuineIntel
cpu family : 6
model : 15
model name : Intel(R) Xeon(R) CPU E5335 @ 2.00GHz
stepping : 7
cpu MHz : 2000.020
cache size : 4096 KB
physical id : 1
siblings : 4
core id : 3
cpu cores : 4
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe
syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni monitor
ds_cpl vmx tm2 ssse3 cx16 xtpr dca lahf_lm
bogomips : 4000.11
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:
root@vpn:~# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3 CPU4 CPU5
CPU6 CPU7
0: 72 0 0 0 0 0
0 0 XT-PIC-XT timer
1: 2 0 0 0 0 0
0 0 XT-PIC-XT i8042
2: 0 0 0 0 0 0
0 0 XT-PIC-XT cascade
8: 1 0 0 0 0 0
0 0 XT-PIC-XT rtc
11: 9117 0 0 0 0 0
0 0 XT-PIC-XT aic94xx
14: 84 0 0 0 0 0
0 0 XT-PIC-XT libata
15: 0 0 0 0 0 0
0 0 XT-PIC-XT libata
2296: 76853 76976 76639 76692 248073 247957
248079 248084 PCI-MSI-edge eth1
2297: 266795 266672 267009 266956 93920 94035
93914 93908 PCI-MSI-edge eth0
NMI: 0 0 0 0 0 0
0 0 Non-maskable interrupts
LOC: 965013 834094 867750 727089 1455650 1345845
1455953 1448724 Local timer interrupts
RES: 1628 1810 1571 1677 2155 2423
1696 1790 Rescheduling interrupts
CAL: 23430 23462 20406 20090 23243 23379
19260 19203 function call interrupts
TLB: 3343 3501 2107 2142 3994 3626
1680 1826 TLB shootdowns
TRM: 0 0 0 0 0 0
0 0 Thermal event interrupts
THR: 0 0 0 0 0 0
0 0 Threshold APIC interrupts
SPU: 0 0 0 0 0 0
0 0 Spurious interrupts
ERR: 0
lspci -vvv output:
06:00.0 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit
Ethernet Controller (Copper) (rev 01)
Subsystem: Super Micro Computer Inc Unknown device 0000
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr+ Stepping- SERR+ FastB2B-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 0, Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 2297
Region 0: Memory at d8300000 (32-bit, non-prefetchable) [size=128K]
Region 2: I/O ports at 3000 [size=32]
Capabilities: [c8] Power Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA
PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=1 PME-
Capabilities: [d0] Message Signalled Interrupts: Mask- 64bit+
Queue=0/0 Enable+
Address: 00000000fee0f00c Data: 41b9
Capabilities: [e0] Express Endpoint IRQ 0
Device: Supported: MaxPayload 256 bytes, PhantFunc 0,
ExtTag-
Device: Latency L0s <512ns, L1 <64us
Device: AtnBtn- AtnInd- PwrInd-
Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported-
Device: RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
Device: MaxPayload 128 bytes, MaxReadReq 512 bytes
Link: Supported Speed 2.5Gb/s, Width x4, ASPM unknown,
Port 0
Link: Latency L0s <128ns, L1 <64us
Link: ASPM Disabled RCB 64 bytes CommClk- ExtSynch-
Link: Speed 2.5Gb/s, Width x4
06:00.1 Ethernet controller: Intel Corporation 80003ES2LAN Gigabit
Ethernet Controller (Copper) (rev 01)
Subsystem: Super Micro Computer Inc Unknown device 0000
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr+ Stepping- SERR+ FastB2B-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 0, Cache Line Size: 32 bytes
Interrupt: pin B routed to IRQ 2296
Region 0: Memory at d8320000 (32-bit, non-prefetchable) [size=128K]
Region 2: I/O ports at 3020 [size=32]
Capabilities: [c8] Power Management version 2
Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA
PME(D0+,D1-,D2-,D3hot+,D3cold+)
Status: D0 PME-Enable- DSel=0 DScale=1 PME-
Capabilities: [d0] Message Signalled Interrupts: Mask- 64bit+
Queue=0/0 Enable+
Address: 00000000feef000c Data: 41c1
Capabilities: [e0] Express Endpoint IRQ 0
Device: Supported: MaxPayload 256 bytes, PhantFunc 0,
ExtTag-
Device: Latency L0s <512ns, L1 <64us
Device: AtnBtn- AtnInd- PwrInd-
Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported-
Device: RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
Device: MaxPayload 128 bytes, MaxReadReq 512 bytes
Link: Supported Speed 2.5Gb/s, Width x4, ASPM unknown,
Port 0
Link: Latency L0s <128ns, L1 <64us
Link: ASPM Disabled RCB 64 bytes CommClk- ExtSynch-
Link: Speed 2.5Gb/s, Width x4
My software versions:
pptpd - 1.3.4
ppp - 2.4.4
I'm also used the accel-pptp
(http://sourceforge.net/projects/accel-pptp/). It was better as for
perforamnce but alos lots of lockups with the same symptoms:
with it I got the following errors:
Mar 3 15:21:14 vpn kernel: [ 0.000000] BUG: soft lockup - CPU#7
stuck for 11s! [events/7:34]
Mar 3 15:21:14 vpn kernel: [ 0.000000] CPU 7:
Mar 3 15:21:14 vpn kernel: [ 0.000000] Modules linked in: af_packet
xt_tcpmss iptable_mangle act_police sch_ingress cls_u32 sch_sfq sch_htb
e1000 xt_multiport xt_TCPMSS xt_state xt_limit xt_tcpudp
nf_conntrack_pptp nf_conntrack_proto_gre nf_nat_irc nf_conntrack_irc
nf_nat_ftp nf_conntrack_ftp iptable_nat nf_nat nf_conntrack_ipv4
nf_conntrack e1000e iptable_filter ip_tables x_tables tcp_cubic pptp
pppox ppp_generic slhc parport_pc lp parport loop iTCO_wdt
iTCO_vendor_support pcspkr shpchp i5000_edac pci_hotplug evdev edac_core
ext3 jbd mbcache sg sr_mod cdrom sd_mod ata_piix pata_acpi aic94xx
libsas ata_generic libata scsi_transport_sas scsi_mod fuse
Mar 3 15:21:14 vpn kernel: [ 0.000000] Pid: 34, comm: events/7 Not
tainted 2.6.24-11-server #1
Mar 3 15:21:14 vpn kernel: [ 0.000000] RIP:
0010:[libata:_spin_unlock_irqrestore+0x8/0x26222]
[libata:_spin_unlock_irqrestore+0x8/0x26222]
_spin_unlock_irqrestore+0x8/0x10
Mar 3 15:21:14 vpn kernel: [ 0.000000] RSP: 0018:ffff810225a779a0
EFLAGS: 00000246
Mar 3 15:21:14 vpn kernel: [ 0.000000] RAX: 0000000000000000 RBX:
ffffc20001a1ab80 RCX: 0000000000000000
Mar 3 15:21:14 vpn kernel: [ 0.000000] RDX: 0000000000000014 RSI:
0000000000000246 RDI: ffff8102249d5aa8
Mar 3 15:21:14 vpn kernel: [ 0.000000] RBP: ffff810225a77920 R08:
0000000000001000 R09: 0000000002000000
Mar 3 15:21:14 vpn kernel: [ 0.000000] R10: 0000000000000000 R11:
ffff81021ac01300 R12: ffffffff8020cfb6
Mar 3 15:21:14 vpn kernel: [ 0.000000] R13: 0000000000000000 R14:
ffff8102249d5a80 R15: 0000000000000010
Mar 3 15:21:14 vpn kernel: [ 0.000000] FS: 0000000000000000(0000)
GS:ffff81022590cd00(0000) knlGS:0000000000000000
Mar 3 15:21:14 vpn kernel: [ 0.000000] CS: 0010 DS: 0018 ES: 0018
CR0: 000000008005003b
Mar 3 15:21:14 vpn kernel: [ 0.000000] CR2: 00007fa2778f7315 CR3:
0000000000201000 CR4: 00000000000006e0
Mar 3 15:21:14 vpn kernel: [ 0.000000] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Mar 3 15:21:14 vpn kernel: [ 0.000000] DR3: 0000000000000000 DR6:
00000000ffff0ff0 DR7: 0000000000000400
Mar 3 15:21:14 vpn kernel: [ 0.000000]
Mar 3 15:21:14 vpn kernel: [ 0.000000] Call Trace:
Mar 3 15:21:14 vpn kernel: [ 0.000000] <IRQ> [<ffffffff8825ab1c>]
:e1000:e1000_xmit_frame+0x8fc/0xcb0
Mar 3 15:21:14 vpn kernel: [ 0.000000]
[e1000:____versions+0x56f3/0x7340] :nf_conntrack_ipv4:ipv4_confirm+0x33/0x60
Mar 3 15:21:14 vpn kernel: [ 0.000000]
[dev_hard_start_xmit+0x22c/0x2a0] dev_hard_start_xmit+0x22c/0x2a0
Mar 3 15:21:14 vpn kernel: [ 0.000000] [__qdisc_run+0x74/0x1f0]
__qdisc_run+0x74/0x1f0
Mar 3 15:21:14 vpn kernel: [ 0.000000] [dev_queue_xmit+0x1e8/0x300]
dev_queue_xmit+0x1e8/0x300
Mar 3 15:21:14 vpn kernel: [ 0.000000] [pptp:pptp_xmit+0x567/0x7e0]
:pptp:pptp_xmit+0x567/0x7e0
Mar 3 15:21:14 vpn kernel: [ 0.000000]
[ppp_generic:ppp_push+0x45c/0x620] :ppp_generic:ppp_push+0x45c/0x620
Mar 3 15:21:14 vpn kernel: [ 0.000000] [<ffffffff8827b235>]
:sch_htb:htb_safe_rb_erase+0x15/0x50
Mar 3 15:21:14 vpn kernel: [ 0.000000] [<ffffffff8827b635>]
:sch_htb:htb_deactivate_prios+0x1a5/0x250
Mar 3 15:21:14 vpn kernel: [ 0.000000]
[ppp_generic:ppp_xmit_process+0x469/0x640]
:ppp_generic:ppp_xmit_process+0x469/0x640
Mar 3 15:21:14 vpn kernel: [ 0.000000]
[ppp_generic:ppp_start_xmit+0x151/0x1e0]
:ppp_generic:ppp_start_xmit+0x151/0x1e0
Mar 3 15:21:14 vpn kernel: [ 0.000000]
[dev_hard_start_xmit+0x22c/0x2a0] dev_hard_start_xmit+0x22c/0x2a0
Mar 3 15:21:14 vpn kernel: [ 0.000000] [__qdisc_run+0x74/0x1f0]
__qdisc_run+0x74/0x1f0
Mar 3 15:21:14 vpn kernel: [ 0.000000] [dev_queue_xmit+0x1e8/0x300]
dev_queue_xmit+0x1e8/0x300
Mar 3 15:21:14 vpn kernel: [ 0.000000] [ip_rcv_finish+0x114/0x3b0]
ip_rcv_finish+0x114/0x3b0
Mar 3 15:21:14 vpn kernel: [ 0.000000] [ip_rcv+0x212/0x300]
ip_rcv+0x212/0x300
Mar 3 15:21:14 vpn kernel: [ 0.000000]
[e1000:netif_receive_skb+0x3ac/0xd80] netif_receive_skb+0x3ac/0x490
Mar 3 15:21:14 vpn kernel: [ 0.000000] [<ffffffff8825c7a4>]
:e1000:e1000_clean_rx_irq+0x1c4/0x590
Mar 3 15:21:14 vpn kernel: [ 0.000000] [<ffffffff88259609>]
:e1000:e1000_clean+0x69/0x250
Mar 3 15:21:14 vpn kernel: [ 0.000000] [net_rx_action+0x128/0x230]
net_rx_action+0x128/0x230
Mar 3 15:21:14 vpn kernel: [ 0.000000] [__do_softirq+0x75/0xe0]
__do_softirq+0x75/0xe0
Mar 3 15:21:14 vpn kernel: [ 0.000000] [call_softirq+0x1c/0x30]
call_softirq+0x1c/0x30
Mar 3 15:21:14 vpn kernel: [ 0.000000] <EOI>
[pptp:_ack_timeout_work+0x0/0x20] :pptp:_ack_timeout_work+0x0/0x20
Mar 3 15:21:14 vpn kernel: [ 0.000000] [do_softirq+0x35/0x90]
do_softirq+0x35/0x90
Mar 3 15:21:14 vpn kernel: [ 0.000000]
[local_bh_enable_ip+0x54/0x60] local_bh_enable_ip+0x54/0x60
Mar 3 15:21:14 vpn kernel: [ 0.000000] [run_workqueue+0xcc/0x170]
run_workqueue+0xcc/0x170
Mar 3 15:21:14 vpn kernel: [ 0.000000] [worker_thread+0x0/0x110]
worker_thread+0x0/0x110
Mar 3 15:21:14 vpn kernel: [ 0.000000] [worker_thread+0x0/0x110]
worker_thread+0x0/0x110
Mar 3 15:21:14 vpn kernel: [ 0.000000] [worker_thread+0xa3/0x110]
worker_thread+0xa3/0x110
Mar 3 15:21:14 vpn kernel: [ 0.000000] [<ffffffff802543d0>]
autoremove_wake_function+0x0/0x30
Mar 3 15:21:14 vpn kernel: [ 0.000000] [worker_thread+0x0/0x110]
worker_thread+0x0/0x110
Mar 3 15:21:14 vpn kernel: [ 0.000000] [worker_thread+0x0/0x110]
worker_thread+0x0/0x110
Mar 3 15:21:14 vpn kernel: [ 0.000000] [kthread+0x4b/0x80]
kthread+0x4b/0x80
Mar 3 15:21:14 vpn kernel: [ 0.000000] [child_rip+0xa/0x12]
child_rip+0xa/0x12
Mar 3 15:21:14 vpn kernel: [ 0.000000] [kthread+0x0/0x80]
kthread+0x0/0x80
Mar 3 15:21:14 vpn kernel: [ 0.000000] [child_rip+0x0/0x12]
child_rip+0x0/0x12
Mar 3 15:21:14 vpn kernel: [ 0.000000]
Moreover, which sysctls` variables should I tweak in addition to
increasing fs.file-max?
Thanx!
--
Oleksandr Samoylyk
OVS-RIPE
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