Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Cisco 1812 Possible memory leak

Hello everyone!

One of our end clients Cisco 1812 running IOS version 12.4(20)T.

is experiencing high memory utilization. We dont have any reports of any network performance issues other than the fact that the routers memory utilization is aroung 85%.

Here is the output of "show proccess memory sorted":

Processor Pool Total:   36644112 Used:   31336588 Free:    5307524

      I/O Pool Total:   33554432 Used:    5765120 Free:   27789312

PID TTY  Allocated      Freed    Holding    Getbufs    Retbufs Process

   0   0   63857000   35282860   25820484          0          0 *Init*         

   1   0    5235924    2352808    2890360          0          0 Chunk Manager  

   0   0          0          0    1643852          0          0 *MallocLite*   

   0   0  982745744  474472844    1286988    2084576          0 *Dead*         

237   0   27803724 2499519412     883724          0          0 IP-EIGRP: PDM  

193   0     598020      18864     565020          0          0 VLAN Manager   

102   0     832288  333937300     545012          0          0 IP RIB Update  

  24   0     239088          0     249332      99792          0 EEM ED Syslog  

  44   0     195912        252     177604          0          0 USB Startup    

197   0     152920          0     160164          0          0 EEM Server     

158   0     107324        532     116036          0          0 Crypto WUI     

136   6  823484020  806925084      83860      20412          0 Virtual Exec   

144   0      76520        252      83512          0          0 HTTP Process   

169   0      66852          0      80096          0          0 Crypto IKEv2   

115   0        940          0      62184          0          0 COPS           

  70   0      49384          0      56628          0          0 ACCT Periodic Pr

  76   0      49384          0      56628          0          0 IP ARP Retry Age

230   0      40036        916      38044          0          0 DHCPD Receive  

171   0     547232     519776      35128          0          0 IPSEC key engine

133   0      16812        252      29804          0          0 IPS Auto Update

  12   0    3514652    4906488      29424          0          0 ARP Background 

  11   0      22056       1848      27452          0          0 ARP Input      

130   0      19508        252      26500          0          0 SCTP Main Proces

173   0      43548      48988      25908          0          0 Crypto ACL     

222   0        252          0      25552          0          0 tHUB           

161   0        284          0      25528          0          0 RPMS_PROC_MAIN 

  53   0        252        252      25244          0          0 ISDN Timer     

   8   0          0          0      25244          0          0 Crash writer   

148   7     625944     613384      24308          0          0 Virtual Exec   

  52   0     459884     433532      23864          0          0 crypto engine pr

168   0       6968        252      19960          0          0 Crypto IKMP    

146   0      12592        252      19584          0          0 CIFS Proxy Proce

117   0      11364          0      19192          0          0 CEF: IPv4 proces

   5   0     241292    2124404      18236     122720     811288 Pool Manager   

236   0          0          0      18232          0          0 IP-EIGRP Router

226   0  299617080  598402212      17256          0          0 SNMP ENGINE    

  77   0      34748       6352      16420       6768          0 IP Input       

198   0       9764        912      16096          0          0 EEM Policy Direc

190   0       5540          0      15784          0          0 EEM ED Resource

  47   0      21892          0      15440      13536          0 IGMP Snooping Pr

162   0       2356        832      14768          0          0 Crypto CA      

195   0      18224      16836      14632          0          0 Syslog         

  31   0     105492        640      14608       4536          0 Net Background 

229   0   43588780   49091604      14440      11340          0 SNMP Traps     

227   0       1252        304      14260          0          0 IP SNMPV6      

224   0   46988560   46987612      14260          0          0 IP SNMP        

212   0       3732          0      13976          0          0 EEM ED Env     

211   0       3732          0      13976          0          0 EEM ED Config  

PID TTY  Allocated      Freed    Holding    Getbufs    Retbufs Process

210   0       3732          0      13976          0          0 EEM ED Test    

209   0       3732          0      13976          0          0 EEM ED Timer   

213   0       3732          0      13976          0          0 EEM ED RPC     

208   0       3732          0      13976          0          0 EEM ED Snmp_Prox

207   0       3732          0      13976          0          0 EEM ED SNMP    

205   0       3732          0      13976          0          0 EEM ED OIR     

204   0       3732          0      13976          0          0 EEM ED None    

203   0       3732          0      13976          0          0 EEM ED IOSWD   

202   0       3732          0      13976          0          0 EEM ED Interface

201   0       3732          0      13976          0          0 EM ED GOLD     

200   0       3732          0      13976          0          0 EEM ED Counter 

199   0       3732          0      13976          0          0 EEM ED CLI     

191   0       3732          0      13976          0          0 EEM ED Track   

  32   0       4316       4000      13560          0          0 IDB Work       

  87   0      12104        252      13468       2340          0 Spanning Tree  

103   0        224          0      13468          0          0 CEF background p

  74   0    4892732    3192140      13468      61880          0 ADJ resolve proc

  73   0        224          0      13468          0          0 CEF switching ba

   3   0        224          0      13332          0          0 Collection proce

225   0  298792940          0      13312          0          0 PDU DISPATCHER 

228   0          0          0      13312          0          0 SNMP ConfCopyPro

  29   0        252        252      13244          0          0 XML Proxy Client

  27   0        252        252      13244          0          0 Dialer event   

165   0          0          0      13244          0          0 encrypt proc   

141   0          0          0      13244          0          0 XSM_ENQUEUER   

132   0          0          0      13244          0          0 IPS Process    

131   0          0          0      13244          0          0 VPDN call manage

232   0     190228     190228      13244          0          0 NTP            

167   0        252        724      13244          0          0 Crypto IKE Dispa

142   0          0          0      13244          0          0 XSM Historian  

  33   0        252        252      13244          0          0 Logger         

  17   0          0          0      13244          0          0 Policy Manager 

124   0        252        252      13244          0          0 X.25 Background

112   0     562472          0      13244          0          0 TCP Protocols  

  95   0        252        252      13244          0          0 KRB5 AAA       

  84   0          0          0      13244          0          0 SSS Manager    

  96   0        252        252      13244          0          0 PPP IP Route   

  82   0        504        504      13244          0          0 PPP Hooks      

  97   0        252        252      13244          0          0 PPP IPCP       

  89   0        252      82788      13244          0          0 SSM connection m

111   0          0   20512196      13244          0          0 TCP Timer      

110   0          0          0      13244          0          0 L2X Data Daemon

192   0       5052          0      12296          0          0 Crypto cTCP proc

   0   0      12132     764080      12132          0          0 *Sched*        

  75   0       5992       1400      11836          0          0 IP ARP Adjacency

155   0   45156888  676908192      11708          0          0 TPLUS          

  19   0       3988          0      11232          0          0 Entity MIB API 

113   0        940          0      11184          0          0 HTTP CORE      

  42   0      16884       3348      10772          0          0 ESWPPM         

  72   0    1195532    1192096      10680          0          0 CDP Protocol   

   4   0       3440        324      10420          0          0 Check heaps    

101   0  329537616          0      10320          0          0 IP Background  

I can see that "Chunk Manager" proccess is holding a lot of memory.

I have researched any known bugs about the subject of "Chunk Manager" possible memory leak that are covered here:

http://www.cisco.com/en/US/docs/ios/12_4t/release/notes/124TCAVS1.html

And found no match for the symptopms reported there.

If anyone can suggests what might be the root cause for this?

What does Chunk Manager proccess is responsible for?

Thanks in advance,

Everyone's tags (5)
4 REPLIES
New Member

Cisco 1812 Possible memory leak

Hi Daniel, did you check the new bug toolkit?

https://tools.cisco.com/bugsearch?referring_site=btk

Anyway 12.4(20)T for your 1812 is not too new, there are versions that you can upgrade.

Kind regards

New Member

Cisco 1812 Possible memory leak

Chunk manager is the process which manages a set of fixed-sized block  subdivided within a large block that has been allocated from one of the standard memory pool .Chunk manager can be considered as a sub memory pool manager .

A process requests a allocation of large memory block from a memory pool . the process then calls chunk manager for sub divide the block into small fixed size chunk and uses the chunk manager to allocate and free the chunk . This is for helping to reduse the burden of the pool manager .

If chunk manager is consuming more process that means  ,The switch  tries to allocate memory for a particular process but could not find a  enough blocks from free memory . This cnn be because the process holds memory even after running . 

This can be because of IOS bugs .

Agnus .

New Member

Cisco 1812 Possible memory leak

Hi Agnus and thank you for your reply.

As i said before i tried to research the issue in the forums and bug toolkit and didnt find any matches to any known bug symptoms.

Other than then contacting Cisco TAC, are there any other troubleshooting steps I can take?

I can provide you with output of any commands you need in order to examine the problem.

New Member

Cisco 1812 Possible memory leak

Don't open a TAC case if your ios is too old, just update it

Kind regards

650
Views
0
Helpful
4
Replies
CreatePlease login to create content