processes cpu usage Cisco 3750 switch

[Ahmed Al jawad]

I have 3750 switch . can someone please tell me what is the VMATM Callback and how i can reduce the CPU usage its taking. and i noticed this happened after i created a RSPAN of my upper link to the WAN ( All my internet traffic 50 Mpbs - 90 Mpbs ) is this any how related to VMATM Callback ?     

CPU utilization for five seconds: 98%/3%; one minute: 99%; five minutes: 99%
 PID Runtime(ms)   Invoked      uSecs   5Sec   1Min   5Min TTY Process
 169   286915034   8020524      35772 65.80% 65.46% 65.43%   0 VMATM Callback
 128   525577552 783235522        671  9.05%  9.54%  9.56%   0 Hulc LED Process
  75  2320659733 248596482       9335  4.13%  4.60%  5.03%   0 HLFM address lea

[Leo Laohoo]

What exact IOS version are you running?

[Ahmed Al jawad]

(C3750-HBOOT-M) Version 12.2(25r)SEE4, its my version 

[Leo Laohoo]

(C3750-HBOOT-M) Version 12.2(25r)SEE4, its my version 

This is the bootstrap version.  Post the complete output to the command "sh version".

[InayathUlla Sharieff]

This 'VMATM' process mainly takes care of the removing the
addresses learnt on an interface when the interface goes down. 

The HRPC process apparently handles remote procedure calls on a 3750 stack

What is that you are seeing in the logs?

[Ahmed Al jawad]

096754: Jan 14 06:18:02: %HLFM-6-ADDR_SYNC: The system is retrying to sync the MAC addresses: reason 2

I see this in the log 

[Iulian Vaideanu]

Maybe you're hitting this bug:

https://tools.cisco.com/quickview/bug/CSCto85486

[bgfl-tech]

Did you ever find a fix for this? I've just hit exactly the same symptoms. High CPU with VMATM Callback at the top and "HLFM-6-ADDR_SYNC" messages in the log.

I'm running this c3750-ipbasek9-mz.122-25.SEE2 and probably long over due an upgrade.

[JU210N]

Same issue on a C2960X Version 15.2(3r)E1  99% CPU and  HLFM-6-ADDR_SYNC messages