High CPU utilization problem,pls help!!

timber2005 · ‎11-03-2014

hi,all

i got some problems,I found the "dhcpd receive" process consume too much CPU, how can i fix it?

attached file is "show process cpu" command output. (running on WS-4507R with cat4500-entservicesk9-mz.150-2.SG1.bin)

#sh platform cpu packet statistics all
Packets Dropped In Hardware By CPU Subport (txQueueNotAvail)

CPU Subport TxQueue 0 TxQueue 1 TxQueue 2 TxQueue 3
------------ --------------- --------------- --------------- ---------------
0 0 7398 0 922470635
1 0 0 0 0
2 0 1748 0 0
3 0 0 0 0
4 0 0 0 0
5 0 0 0 0
6 0 0 0 0
7 0 0 0 0

RkiosSysPacketMan:
Packet allocation failures: 0
Packet Buffer(Software Common) allocation failures: 0
Packet Buffer(Software ESMP) allocation failures: 0
Packet Buffer(Software EOBC) allocation failures: 0
Packet Buffer(Software SupToSup) allocation failures: 0
IOS Packet Buffer Wrapper allocation failures: 0

Packets Enqueued Overall

Total 5 sec avg 1 min avg 5 min avg 1 hour avg
-------------------- --------- --------- --------- ----------
0 0 0 0 0

Packets Not Enqueued Overall

Total 5 sec avg 1 min avg 5 min avg 1 hour avg
-------------------- --------- --------- --------- ----------
0 0 0 0 0

Packets Dropped In Processing Overall

Total 5 sec avg 1 min avg 5 min avg 1 hour avg
-------------------- --------- --------- --------- ----------
7938572 0 0 0 0

Packets Not Enqueued by CPU event

Event Total 5 sec avg 1 min avg 5 min avg 1 hour avg
----------------- -------------------- --------- --------- --------- ----------
Control Packet 0 0 0 0 0
Input Acl 0 0 0 0 0
RPF Fail 0 0 0 0 0
Adjacency Same If 0 0 0 0 0
L3 Forward 0 0 0 0 0
NFL Copy To CPU 0 0 0 0 0
Output Acl 0 0 0 0 0
MTU Check Fail 0 0 0 0 0
SA Miss 0 0 0 0 0
L2 Forward 0 0 0 0 0
SPAN 0 0 0 0 0
CPU Generated 0 0 0 0 0
Unknown 0 0 0 0 0

Packets Dropped In Processing by CPU event

Event Total 5 sec avg 1 min avg 5 min avg 1 hour avg
----------------- -------------------- --------- --------- --------- ----------
Control Packet 0 0 0 0 0
Input Acl 7932929 0 0 0 0
RPF Fail 0 0 0 0 0
Adjacency Same If 0 0 0 0 0
L3 Forward 0 0 0 0 0
NFL Copy To CPU 0 0 0 0 0
Output Acl 90 0 0 0 0
MTU Check Fail 0 0 0 0 0
SA Miss 5538 0 0 0 0
L2 Forward 0 0 0 0 0
SPAN 0 0 0 0 0
CPU Generated 0 0 0 0 0
Unknown 0 0 0 0 0
Packets Dropped In Processing by CPU event

Event Total 5 sec avg 1 min avg 5 min avg 1 hour avg
----------------- -------------------- --------- --------- --------- ----------
Control Packet 0 0 0 0 0
Input Acl 7932929 0 0 0 0
RPF Fail 0 0 0 0 0
Adjacency Same If 0 0 0 0 0
L3 Forward 0 0 0 0 0
NFL Copy To CPU 0 0 0 0 0
Output Acl 90 0 0 0 0
MTU Check Fail 0 0 0 0 0
SA Miss 5538 0 0 0 0
L2 Forward 0 0 0 0 0
SPAN 0 0 0 0 0
CPU Generated 0 0 0 0 0
Unknown 0 0 0 0 0

Packets Not Enqueued by Priority

Priority Total 5 sec avg 1 min avg 5 min avg 1 hour avg
----------------- -------------------- --------- --------- --------- ----------
Unknown 0 0 0 0 0
Normal 0 0 0 0 0
Medium 0 0 0 0 0
High 0 0 0 0 0
Crucial 0 0 0 0 0
Super Crucial 0 0 0 0 0

Packets Dropped In Processing by Priority

Priority Total 5 sec avg 1 min avg 5 min avg 1 hour avg
----------------- -------------------- --------- --------- --------- ----------
Unknown 0 0 0 0 0
Normal 415 0 0 0 0
Medium 5553 0 0 0 0
High 7932619 0 0 0 0
Crucial 0 0 0 0 0
Super Crucial 0 0 0 0 0

Packets Not Enqueued by Reason

Reason Total 5 sec avg 1 min avg 5 min avg 1 hour avg
---------------- --------------------- --------- --------- --------- ----------
RxQueueNotAvail 0 0 0 0 0
RxNoBuffersAvail 0 0 0 0 0
RxBadCpuEvent 0 0 0 0 0
Testing 0 0 0 0 0

Packets Dropped In Processing by Reason

Reason Total 5 sec avg 1 min avg 5 min avg 1 hour avg
------------------ -------------------- --------- --------- --------- ----------
BadPddType 0 0 0 0 0
VlanZeroBadCrc 0 0 0 0 0
VlanZeroGoodCrc 0 0 0 0 0
ReplVlan0GoodCrc 0 0 0 0 0
NoPimPhyportMap 0 0 0 0 0
NoPimPhyport 0 0 0 0 0
UnimplementedEvt 0 0 0 0 0
SrcAddrTableFilt 1557 0 0 0 0
NoL2Vlan 0 0 0 0 0
STPDrop 3981 0 0 0 0
UnknownLyr-Bridge 0 0 0 0 0
UnknownLyr-OutAcl 90 0 0 0 0
L2DstDrop 12 0 0 0 0
L2DstDropInAcl 0 0 0 0 0
L2DstDropOutAcl 0 0 0 0 0
AclNoVlan 0 0 0 0 0
AclActionDrop 0 0 0 0 0
AclActionRedirect 0 0 0 0 0
AclActionUnsupptd 0 0 0 0 0
UnknownBridgeAct 0 0 0 0 0
NoTxInfo 0 0 0 0 0
NoDstPorts 7932932 0 0 0 0
NoFloodPorts 0 0 0 0 0
ControlNoL2DstEnt 0 0 0 0 0
InvalidAclAction 0 0 0 0 0
AclInputErr 0 0 0 0 0
OutAclEvntOnInAcl 0 0 0 0 0
AclOutputErr 0 0 0 0 0
ReservedPort 0 0 0 0 0
EsmpNoTxInfo 0 0 0 0 0
UnknownSource 0 0 0 0 0
NoDriverTxPackets 0 0 0 0 0
NoPimPort 0 0 0 0 0
RouteLookupFailed 0 0 0 0 0
FragPktAllocFailed 0 0 0 0 0
IpHdrException 0 0 0 0 0
SpanEvent 0 0 0 0 0
Dot1xUnauthCtrlPkt 0 0 0 0 0
No Sw port for ARP 0 0 0 0 0
No Sw port for ESMP 0 0 0 0 0
CtrlPktInBadEtherType 0 0 0 0 0
PortMacOperationallyDown 0 0 0 0 0

Total packet queues 16

Packets Received by Packet Queue

Queue Total 5 sec avg 1 min avg 5 min avg 1 hour avg
---------------------- --------------- --------- --------- --------- ----------
Esmp 2830872005 125 110 79 71
L2/L3Control 752444885 31 22 20 20
Host Learning 94862324 3 0 1 1
L3 Fwd High 439 0 0 0 0
L3 Fwd Medium 68226 0 0 0 0
L3 Fwd Low 105911724 5 0 1 1
L2 Fwd High 0 0 0 0 0
L2 Fwd Medium 9144 0 0 0 0
L2 Fwd Low 1033665357 253 232 165 76
L3 Rx High 1163622 0 0 0 0
L3 Rx Low 2379160134 243 263 194 99
RPF Failure 0 0 0 0 0
ACL fwd(snooping) 0 0 0 0 0
ACL log, unreach 33482 0 0 0 0
ACL sw processing 108494909 9 4 5 4
MTU Fail/Invalid 0 0 0 0 0

Packets Dropped by Packet Queue

Queue Total 5 sec avg 1 min avg 5 min avg 1 hour avg
---------------------- --------------- --------- --------- --------- ----------
Esmp 0 0 0 0 0
L2/L3Control 0 0 0 0 0
Host Learning 79 0 0 0 0
L3 Fwd High 0 0 0 0 0
L3 Fwd Medium 0 0 0 0 0
L3 Fwd Low 0 0 0 0 0
L2 Fwd High 0 0 0 0 0
L2 Fwd Medium 0 0 0 0 0
L2 Fwd Low 0 0 0 0 0
L3 Rx High 0 0 0 0 0
L3 Rx Low 2 0 0 0 0
RPF Failure 0 0 0 0 0
ACL fwd(snooping) 0 0 0 0 0
ACL log, unreach 0 0 0 0 0
ACL sw processing 0 0 0 0 0
MTU Fail/Invalid 0 0 0 0 0

Packets Transmitted from CPU per Output Interface

Interface Total 5 sec avg 1 min avg 5 min avg 1 hour avg
---------------------- --------------- --------- --------- --------- ----------
Fa3/1 0 0 0 0 0
Fa3/2 0 0 0 0 0
Fa3/3 0 0 0 0 0
Fa3/4 0 0 0 0 0
Fa3/5 0 0 0 0 0
Fa3/6 0 0 0 0 0
Fa3/7 0 0 0 0 0
Fa3/8 0 0 0 0 0
Fa3/9 0 0 0 0 0
Fa3/10 0 0 0 0 0
Fa3/11 0 0 0 0 0
Fa3/12 0 0 0 0 0
Fa3/13 0 0 0 0 0
Fa3/14 0 0 0 0 0
Fa3/15 0 0 0 0 0
Fa3/16 0 0 0 0 0
Fa3/17 0 0 0 0 0
Fa3/18 0 0 0 0 0
Fa3/19 0 0 0 0 0
Fa3/20 0 0 0 0 0
Fa3/21 0 0 0 0 0
Fa3/22 0 0 0 0 0
Fa3/23 0 0 0 0 0
Fa3/24 0 0 0 0 0
Fa3/25 0 0 0 0 0
Fa3/26 0 0 0 0 0
Fa3/27 0 0 0 0 0
Fa3/28 0 0 0 0 0
Fa3/29 0 0 0 0 0
Fa3/30 0 0 0 0 0
Fa3/31 0 0 0 0 0
Fa3/32 0 0 0 0 0
Fa3/33 0 0 0 0 0
Fa3/34 0 0 0 0 0
Fa3/35 0 0 0 0 0
Fa3/36 0 0 0 0 0
Fa3/37 0 0 0 0 0
Fa3/38 0 0 0 0 0
Fa3/39 0 0 0 0 0
Fa3/40 0 0 0 0 0
Fa3/41 0 0 0 0 0
Fa3/42 0 0 0 0 0
Fa3/43 0 0 0 0 0
Fa3/44 0 0 0 0 0
Fa3/45 0 0 0 0 0
Fa3/46 0 0 0 0 0
Fa3/47 0 0 0 0 0
Fa3/48 0 0 0 0 0
Fa4/1 0 0 0 0 0
Fa4/2 0 0 0 0 0
Fa4/3 0 0 0 0 0
Fa4/4 0 0 0 0 0
Fa4/5 0 0 0 0 0
Fa4/6 0 0 0 0 0
Fa4/7 0 0 0 0 0
Fa4/8 0 0 0 0 0
Fa4/9 0 0 0 0 0
Fa4/10 0 0 0 0 0
Fa4/11 0 0 0 0 0
Fa4/12 0 0 0 0 0
Fa4/13 0 0 0 0 0
Fa4/14 0 0 0 0 0
Fa4/15 0 0 0 0 0
Fa4/16 0 0 0 0 0
Fa4/17 0 0 0 0 0
Fa4/18 0 0 0 0 0
Fa4/19 0 0 0 0 0
Fa4/20 0 0 0 0 0
Fa4/21 0 0 0 0 0
Fa4/22 0 0 0 0 0
Fa4/23 0 0 0 0 0
Fa4/24 0 0 0 0 0
Fa4/25 0 0 0 0 0
Fa4/26 0 0 0 0 0
Fa4/27 0 0 0 0 0
Fa4/28 0 0 0 0 0
Fa4/29 0 0 0 0 0
Fa4/30 0 0 0 0 0
Fa4/31 0 0 0 0 0
Fa4/32 0 0 0 0 0
Fa4/33 0 0 0 0 0
Fa4/34 0 0 0 0 0
Fa4/35 0 0 0 0 0
Fa4/36 0 0 0 0 0
Fa4/37 0 0 0 0 0
Fa4/38 0 0 0 0 0
Fa4/39 0 0 0 0 0
Fa4/40 0 0 0 0 0
Fa4/41 0 0 0 0 0
Fa4/42 0 0 0 0 0
Fa4/43 0 0 0 0 0
Fa4/44 0 0 0 0 0
Fa4/45 0 0 0 0 0
Fa4/46 0 0 0 0 0
Fa4/47 0 0 0 0 0
Fa4/48 0 0 0 0 0
Gi5/1 0 0 0 0 0
Gi5/2 0 0 0 0 0
Gi5/3 0 0 0 0 0
Gi5/4 0 0 0 0 0
Gi5/5 0 0 0 0 0
Gi5/6 0 0 0 0 0
Gi1/1 0 0 0 0 0
Gi1/2 0 0 0 0 0

Packets Received at CPU per Input Interface

Interface Total 5 sec avg 1 min avg 5 min avg 1 hour avg
---------------------- --------------- --------- --------- --------- ----------
Fa3/1 0 0 0 0 0
Fa3/2 0 0 0 0 0
Fa3/3 0 0 0 0 0
Fa3/4 0 0 0 0 0
Fa3/5 0 0 0 0 0
Fa3/6 0 0 0 0 0
Fa3/7 0 0 0 0 0
Fa3/8 0 0 0 0 0
Fa3/9 0 0 0 0 0
Fa3/10 0 0 0 0 0
Fa3/11 0 0 0 0 0
Fa3/12 0 0 0 0 0
Fa3/13 0 0 0 0 0
Fa3/14 0 0 0 0 0
Fa3/15 0 0 0 0 0
Fa3/16 0 0 0 0 0
Fa3/17 0 0 0 0 0
Fa3/18 0 0 0 0 0
Fa3/19 0 0 0 0 0
Fa3/20 0 0 0 0 0
Fa3/21 0 0 0 0 0
Fa3/22 0 0 0 0 0
Fa3/23 0 0 0 0 0
Fa3/24 0 0 0 0 0
Fa3/25 0 0 0 0 0
Fa3/26 0 0 0 0 0
Fa3/27 0 0 0 0 0
Fa3/28 0 0 0 0 0
Fa3/29 0 0 0 0 0
Fa3/30 0 0 0 0 0
Fa3/31 0 0 0 0 0
Fa3/32 0 0 0 0 0
Fa3/33 0 0 0 0 0
Fa3/34 0 0 0 0 0
Fa3/35 0 0 0 0 0
Fa3/36 0 0 0 0 0
Fa3/37 0 0 0 0 0
Fa3/38 0 0 0 0 0
Fa3/39 0 0 0 0 0
Fa3/40 0 0 0 0 0
Fa3/41 0 0 0 0 0
Fa3/42 0 0 0 0 0
Fa3/43 0 0 0 0 0
Fa3/44 0 0 0 0 0
Fa3/45 0 0 0 0 0
Fa3/46 0 0 0 0 0
Fa3/47 0 0 0 0 0
Fa3/48 0 0 0 0 0
Fa4/1 0 0 0 0 0
Fa4/2 0 0 0 0 0
Fa4/3 0 0 0 0 0
Fa4/4 0 0 0 0 0
Fa4/5 0 0 0 0 0
Fa4/6 0 0 0 0 0
Fa4/7 0 0 0 0 0
Fa4/8 0 0 0 0 0
Fa4/9 0 0 0 0 0
Fa4/10 0 0 0 0 0
Fa4/11 0 0 0 0 0
Fa4/12 0 0 0 0 0
Fa4/13 0 0 0 0 0
Fa4/14 0 0 0 0 0
Fa4/15 0 0 0 0 0
Fa4/16 0 0 0 0 0
Fa4/17 0 0 0 0 0
Fa4/18 0 0 0 0 0
Fa4/19 0 0 0 0 0
Fa4/20 0 0 0 0 0
Fa4/21 0 0 0 0 0
Fa4/22 0 0 0 0 0
Fa4/23 0 0 0 0 0
Fa4/24 0 0 0 0 0
Fa4/25 0 0 0 0 0
Fa4/26 0 0 0 0 0
Fa4/27 0 0 0 0 0
Fa4/28 0 0 0 0 0
Fa4/29 0 0 0 0 0
Fa4/30 0 0 0 0 0
Fa4/31 0 0 0 0 0
Fa4/32 0 0 0 0 0
Fa4/33 0 0 0 0 0
Fa4/34 0 0 0 0 0
Fa4/35 0 0 0 0 0
Fa4/36 0 0 0 0 0
Fa4/37 0 0 0 0 0
Fa4/38 0 0 0 0 0
Fa4/39 0 0 0 0 0
Fa4/40 0 0 0 0 0
Fa4/41 0 0 0 0 0
Fa4/42 0 0 0 0 0
Fa4/43 0 0 0 0 0
Fa4/44 0 0 0 0 0
Fa4/45 0 0 0 0 0
Fa4/46 0 0 0 0 0
Fa4/47 0 0 0 0 0
Fa4/48 0 0 0 0 0
Gi5/1 0 0 0 0 0
Gi5/2 0 0 0 0 0
Gi5/3 0 0 0 0 0
Gi5/4 0 0 0 0 0
Gi5/5 0 0 0 0 0
Gi5/6 0 0 0 0 0
Gi1/1 0 0 0 0 0
Gi1/2 0 0 0 0 0