[c-nsp] High CPU on 3750G-24-TS
William
willay at gmail.com
Wed Nov 12 06:52:25 EST 2008
sh controllers cpu-interface:
ASIC Rxbiterr Rxunder Fwdctfix Txbuflos Rxbufloc Rxbufdrain
-------------------------------------------------------------------------
ASIC0 0 0 0 0 0 0
ASIC1 0 0 0 0 0 0
ASIC2 0 0 0 0 0 0
ASIC3 0 0 0 0 0 0
ASIC4 0 0 0 0 0 0
ASIC5 0 0 0 0 0 0
ASIC6 0 0 0 0 0 0
cpu-queue-frames retrieved dropped invalid hol-block stray
----------------- ---------- ---------- ---------- ---------- ----------
rpc 6978024 0 0 0 0
stp 75955900 0 0 0 0
ipc 757544 0 0 0 0
routing protocol 72189954 0 0 0 0
L2 protocol 206785 0 0 0 0
remote console 0 0 0 0 0
sw forwarding 757525900 0 0 0 0
host 2351100 0 0 0 0
broadcast 6883919 0 0 0 0
cbt-to-spt 3050 0 0 0 0
igmp snooping 70408141 0 0 0 0
icmp 1947383 0 0 0 0
logging 0 0 0 0 0
rpf-fail 281 0 0 0 0
queue14 0 0 0 0 0
cpu heartbeat 18351455 0 0 0 0
Supervisor ASIC receive-queue parameters
----------------------------------------
queue 0 maxrecevsize 7E0 pakhead 23C49A0 paktail 23B28E0
queue 1 maxrecevsize 7E0 pakhead 257E620 paktail 257C550
queue 2 maxrecevsize 7E0 pakhead 24432E8 paktail 2442C58
queue 3 maxrecevsize 7E0 pakhead 2955418 paktail 294FEC8
queue 4 maxrecevsize 7E0 pakhead 2588838 paktail 25884F0
queue 5 maxrecevsize 7E0 pakhead 2873240 paktail 28800F8
queue 6 maxrecevsize 7E0 pakhead 293E000 paktail 2944270
queue 7 maxrecevsize 7E0 pakhead 28ADC08 paktail 2898038
queue 8 maxrecevsize 7E0 pakhead 28B6A70 paktail 28B6098
queue 9 maxrecevsize 7E0 pakhead 275E410 paktail 275E410
queue A maxrecevsize 7E0 pakhead 2729DF0 paktail 272D270
queue B maxrecevsize 7E0 pakhead 28871D8 paktail 2889C80
queue C maxrecevsize 7E0 pakhead 2765818 paktail 2778FD0
queue D maxrecevsize 7E0 pakhead 275C538 paktail 275C1F0
queue E maxrecevsize 0 pakhead 0 paktail 0
queue F maxrecevsize 7E0 pakhead 2721B78 paktail 2721830
Supervisor ASIC exception status
--------------------------------
Receive overrun 00000000 Transmit overrun 00000000
FrameSignatureErr 00000000 MicInitialize 00000000
BadFrameErr 00000000 LenExceededErr 00000000
BadJumboSegments 00000000
Supervisor ASIC Mic Registers
------------------------------
MicDirectPollInfo 80000800
MicIndicationsReceived 00000000
MicInterruptsReceived 00000000
MicPcsInfo 0006001F
MicPlbMasterConfiguration 00000000
MicRxFifosAvailable 00000000
MicRxFifosReady 0000BFFF
MicTimeOutPeriod: FrameTOPeriod: 00000EA6 DirectTOPeriod: 00004000
MicTransmFramesCopied 00000003
MicTxFifosAvailable 0000007F
MicConfiguration: Conf flag: 00000110 Interrupt Flag: 0000000A
MicReceiveFifoAssignmen Queue 0 - 7: 00000000 Queue 8 - 15:00000000
MicReceiveFramesReady: FrameAvailable: 00000041 frameAvaiMask: 00000000
MicException:
Exception_flag 00000000
Message-1 00000000
Message-2 00000000
Message-3 00000000
MicIntRxFifo:
ReadPtr 00000E98 WritePtr 00000E98
WHeadPtr 00000E98 TxFifoDepth C0000800
MicIntTxFifo:
ReadPtr 00000AF0 WritePtr 00000AF0
WHeadPtr 00000AF0 TxFifoDepth C0000800
MicDecodeInfo:
Fifo0: address: 03FF4000 asic_num: 00000100
Fifo1: address: 03FF4400 asic_num: 00000101
MicTransmitFifoInfo:
Fifo0: StartPtrs: 07758000 ReadPtr: 077587C0
WritePtrs: 077587C0 Fifo_Flag: 8A800800
Weights: 001E001E
Fifo1: StartPtrs: 0776A800 ReadPtr: 0776A930
WritePtrs: 0776A930 Fifo_Flag: 89800400
Weights: 000A000A
MicReceiveFifoInfo:
Fifo0: StartPtr: 0776C000 ReadPtr: 0776CEE0
WritePtrs: 0776CF40 Fifo_Flag: 8B000FA0
writeHeaderPtr: 0776CF40
Fifo1: StartPtr: 07A2CC00 ReadPtr: 07A2CDF8
WritePtrs: 07A2CDF8 Fifo_Flag: 89800400
writeHeaderPtr: 07A2CDF8
Fifo2: StartPtr: 0776DA00 ReadPtr: 0776DB40
WritePtrs: 0776DB40 Fifo_Flag: 88800200
writeHeaderPtr: 0776DB40
Fifo3: StartPtr: 07C46000 ReadPtr: 07C46010
WritePtrs: 07C46010 Fifo_Flag: 89800400
writeHeaderPtr: 07C46010
Fifo4: StartPtr: 07A77000 ReadPtr: 07A77208
WritePtrs: 07A77208 Fifo_Flag: 89800400
writeHeaderPtr: 07A77208
Fifo5: StartPtr: 07B2BA00 ReadPtr: 07B2BA00
WritePtrs: 07B2BA00 Fifo_Flag: 88800200
writeHeaderPtr: 07B2BA00
Fifo6: StartPtr: 07BFE000 ReadPtr: 07BFE040
WritePtrs: 07BFE080 Fifo_Flag: 890003C0
writeHeaderPtr: 07BFE080
Fifo7: StartPtr: 07B6C800 ReadPtr: 07B6CBE0
WritePtrs: 07B6CBE0 Fifo_Flag: 89800400
writeHeaderPtr: 07B6CBE0
Fifo8: StartPtr: 07BD7A00 ReadPtr: 07BD7A78
WritePtrs: 07BD7A78 Fifo_Flag: 88800200
writeHeaderPtr: 07BD7A78
Fifo9: StartPtr: 07758838 ReadPtr: 07758838
WritePtrs: 07758838 Fifo_Flag: 82800008
writeHeaderPtr: 07758838
Fifo10: StartPtr: 07AC3600 ReadPtr: 07AC3668
WritePtrs: 07AC3668 Fifo_Flag: 88800200
writeHeaderPtr: 07AC3668
Fifo11: StartPtr: 07B2B880 ReadPtr: 07B2B8B8
WritePtrs: 07B2B8B8 Fifo_Flag: 86800080
writeHeaderPtr: 07B2B8B8
Fifo12: StartPtr: 07AF3000 ReadPtr: 07AF3300
WritePtrs: 07AF3000 Fifo_Flag: 89000100
writeHeaderPtr: 07AF3000
Fifo13: StartPtr: 07757E00 ReadPtr: 07757E48
WritePtrs: 07757E48 Fifo_Flag: 86800080
writeHeaderPtr: 07757E48
Fifo14: StartPtr: 00000000 ReadPtr: 00000000
WritePtrs: 00000000 Fifo_Flag: 00800000
writeHeaderPtr: 00000000
Fifo15: StartPtr: 0776D960 ReadPtr: 0776D978
WritePtrs: 0776D978 Fifo_Flag: 84800020
writeHeaderPtr: 0776D978
===========================================================
Complete Board Id:0x0002
===========================================================
Theres no sh platform tcam utili but there is a usage instead:
sh platform tcam usage
=============================================================================
TCAM Table
TCAM / SSRAM Table TCAM SSRAM
Start Size X Start Size Y
=============================================================================
Local Forwarding Table: 0 1D00 1 0 1D00 4
Local Learning Table: 0 1D00 1 7400 1D00 2
Secondary Forwarding Table: 1880 D00 1 AE00 D00 8
QoS Table: 2580 1000 1 11600 1000 4
ACL Table: 3580 2000 1 15600 2000 4
IPV6 Secondary Forwarding Tabl 7E40 C0 2 1D600 60 8
IPV6 Classification Table: 7F00 80 2 1D900 40 4
IPV6 ACL Table: 7F80 70 2 1DA00 38 4
Station Table: 0 0 0 1DB00 1D00 4
MAC Address Table: 0 0 0 24F00 1800 8
Multicast Expansion Table: 0 0 0 30F00 420 8
VLAN List Table: 0 0 0 34000 400 10
Equal Cost Route Table: 0 0 0 33000 80 20
X - Number of 144-bit TCAM entries per descriptor
Y - Number of bytes per descriptor
=============================================================================
2008/11/12 Tassos Chatzithomaoglou <achatz at forthnet.gr>:
> You can start with "sh controllers cpu-interface" and "sh platform tcam
> utilization"
>
> --
> Tassos
>
> William wrote on 12/11/2008 13:15:
>>
>> Hi List,
>>
>> We currently have a 3750G-E in our network which is experiencing a
>> high CPU load and I'm trying to understand why, the CPU is over 50%
>> all the time and at peak traffic times we are seeing around 85% on
>> Cacti using 5 minute averages.
>>
>> When running a show proc cpu sorted I can see that IP Input is taking
>> up most of the CPU time with Spanning Tree coming second however ST is
>> only using a fraction of what IP Input is using.
>>
>> The switch is not in a stack, runs IOS version 12.2(25)SEB4 and the
>> image is IPSERVICES, the configuration has one routed port to another
>> site (with sparse-dense-mode on), has one EIGRP process, 19 static
>> routes, access lists which are only used for SNMP/VTY and it has two
>> VLAN interfaces. One of the VLAN interfaces has sparse-dense-mode
>> enabled and a igmp join-group command. It pushes a lot of multicast
>> traffic (around 10Mbits) which is probably the problem but I thought
>> the 3750 would have been able to handle it without an issue.
>>
>> Any help is appreciated, I'd like to have a good understanding of what
>> is causing the issue.
>>
>> Thank you for your time,
>>
>> W
>> _______________________________________________
>> cisco-nsp mailing list cisco-nsp at puck.nether.net
>> https://puck.nether.net/mailman/listinfo/cisco-nsp
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>>
>
>
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