%IVR-3-LOW_CPU_RESOURCE - IVR: System experiencing high cpu utilization (99

Unanswered Question
Dec 17th, 2008

Hi,

I have a VoIP Gateway and I can see this message in the log.

=================================

Error Message

Dec 17 2008 00:00:03

IVR

3

LOW_CPU_RESOURCE

IVR: System experiencing high cpu utilization (99/100).

=================================

From Cisco.com

http://www.cisco.com/en/US/docs/ios/12_3/sem1/system/messages/emgisdn.html#wp138298

%IVR-3-LOW_CPU_RESOURCE : IVR: System experiencing high cpu utilization ([dec]/100). Call (callID=[dec]) is rejected.\n

Explanation: The system does not have enough CPU resources available to accept a new call.

Recommended Action: Ensure that the call setup rate is within the supported capacity of this gateway.

=================================

show version

Cisco IOS Software, 3700 Software (C3725-IPVOICE-M), Version 12.3(11)T3, RELEASE SOFTWARE (fc4)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2005 by Cisco Systems, Inc.

Compiled Wed 26-Jan-05 12:19 by pwade

ROM: System Bootstrap, Version 12.2(8r)T2, RELEASE SOFTWARE (fc1)

pre_rt01 uptime is 3 hours, 59 minutes

System returned to ROM by power-on

System restarted at 12:07:58 BR-3 Wed Dec 17 2008

System image file is "flash:c3725-ipvoice-mz.123-11.T3.bin"

Cisco 3725 (R7000) processor (revision 0.1) with 246784K/15360K bytes of memory.

Processor board ID JMX0825L548

R7000 CPU at 240MHz, Implementation 39, Rev 3.3, 256KB L2 Cache

2 FastEthernet interfaces

2 Channelized E1/PRI ports

DRAM configuration is 64 bits wide with parity disabled.

55K bytes of NVRAM.

31744K bytes of ATA System CompactFlash (Read/Write)

Configuration register is 0x101

================

show processes cpu history

rt01 04:08:03 PM Wednesday Dec 17 2008 BR-3

9999999999999999999999999999999999999999999999999999999999

9999999999999999999999999999999999999999999999999999999999

100 ***************************************

90 ***************************************

80 ***************************************

70 ***************************************

60 ***************************************

50 ***************************************

40 ***************************************

30 ***************************************

20 ***************************************

10 ***************************************

0....5....1....1....2....2....3....3....4....4....5....5....

0 5 0 5 0 5 0 5 0 5

CPU% per second (last 60 seconds)

1 1 111 1 111 1 1111 1 1 1

9990999990999999000990990009999990990000990990999909991

9990999990999999000990990009999990990000990990999909990888

100 #####################################################*

90 #####################################################*

80 #####################################################*

70 #####################################################*

60 #####################################################*

50 #####################################################*

40 ######################################################

30 ######################################################

20 ######################################################

10 ############################################################

0....5....1....1....2....2....3....3....4....4....5....5....

0 5 0 5 0 5 0 5 0 5

CPU% per minute (last 60 minutes)

* = maximum CPU% # = average CPU%

338

702

100

90

80 *

70 *

60 *

50 *

40 * *

30 ***

20 ***

10 ###

0....5....1....1....2....2....3....3....4....4....5....5....6....6....7.

0 5 0 5 0 5 0 5 0 5 0 5 0

CPU% per hour (last 72 hours)

* = maximum CPU% # = average CPU%

=================================

There is correction for this error?

Can I put more memory?

I need update the IOS?

How is the better IOS?

Please, someone help me.

Thanks,

Rodrigo

I have this problem too.
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Nicholas Matthews Wed, 12/17/2008 - 11:14

Hi Rodrigo,

This could be normal depending upon how many active calls you have going through the system. If you're running 400+ calls this may just be a lack of resources. If this is the case something like a AS5400XM or VGD-1T3 may be a better box. If you're not quite that high for CPU utilization, you could probably use a 3845.

If this is a lower volume call situation where the CPU utilization just spikes ( and I can't tell if there is a call influx here or not) without more calls, it is probably a bug. If the amount of calls is linear to the CPU utilization it will be a resource problem more than likely.

'show call active voice brief' vs 'show proc cpu hist' will give you a good idea.

It could very well be a bug.

You could try upgrading to something like 12.4(13f) which is considered to be a pretty good mainline image.

Otherwise, you could try 12.4(15)T8 which is considered one of the more stable T train images.

rodrigofreitas Thu, 12/18/2008 - 06:42

Hi, Nick

Thank you for answer.

I think I have a big problem, because my Router have 32MB from flash.

The two IOS's that you said me will need 64MB from flash.

I saw the commands that you said me, but I don't know the first command 'show call active vouce brief'. I know the sh proc cpu his.

Can you help me to interpret this command (show call act voice bri)?

Is attached the commands, after 5 minutes reload.

Thanks,

Rodrigo

Attachment: 
Nicholas Matthews Thu, 12/18/2008 - 12:42

Hi Rodrigo,

These commands don't offer any information because you don't have high CPU when you entered them.

-nick

rodrigofreitas Tue, 01/13/2009 - 10:50

Hi, Nick

How are you?

I didn't send a message to you because I was waiting see the Log's.

Today I get the Log's and They are attached.

Please, Can you see?

Thank you,

Rodrigo

Attachment: 
Nicholas Matthews Tue, 01/13/2009 - 12:17

Hi Rodrigo,

It's hard to tell. You've got 40% utilization by interrupts, and nearly 55% of IP Input:

58.97% 57.76% 55.48% 0 IP Input

This could just be a packets per second issue. This more of an architecture issue at this point, rather than dealing with any voip issues, from these outputs.

If you are worried about this, I would put a TAC case in to the architecture team with that output.

There's a pretty good chance that this is normal, and it's pure IP packets causing the CPU utilization, but I can't say with certainty that this is 100% expected either.

hth,

nick

Alcides Miguel Wed, 05/21/2014 - 03:12

Hi Nicholas,

 

How can I solve this problem 'cause I'm facing the same issue with with a cisco 2911.

Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.0(1)M5, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Wed 23-Feb-11 15:41 by prod_rel_team

ROM: System Bootstrap, Version 15.0(1r)M9, RELEASE SOFTWARE (fc1)

0519-WRT-01 uptime is 19 hours, 59 minutes
System returned to ROM by reload at 15:06:46 UTC Tue May 20 2014
System restarted at 15:08:03 UTC Tue May 20 2014
System image file is "flash0:c2900-universalk9-mz.SPA.150-1.M5.bin"
Last reload type: Normal Reload
Last reload reason: Reload Command

 

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Importers, exporters, distributors and users are responsible for
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A summary of U.S. laws governing Cisco cryptographic products may be found at:
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If you require further assistance please contact us by sending email to
[email protected].

Cisco CISCO2911/K9 (revision 1.0) with 475136K/49152K bytes of memory.
Processor board ID FTX1524AJFR
3 Gigabit Ethernet interfaces
1 terminal line
1 Virtual Private Network (VPN) Module
2 Voice FXO interfaces
2 Voice FXS interfaces
1 Services Module (SM) with Services Ready Engine (SRE)
   Cisco Wide Area Application Services Software 5.2.1 (b34 Apr 25 2013 11:38:47) in slot 1
DRAM configuration is 64 bits wide with parity enabled.
255K bytes of non-volatile configuration memory.
255744K bytes of ATA System CompactFlash 0 (Read/Write)

 

 

0519-WRT-01#sh proc cpu hist

0519-WRT-01   11:01:41 AM Wednesday May 21 2014 UTC

                                                                
    999999999999999999999999999999999999999999999999999999999999
    999999999999999999999999999999999999999999999999999999999999
100 ************************************************************
 90 ************************************************************
 80 ************************************************************
 70 ************************************************************
 60 ************************************************************
 50 ************************************************************
 40 ************************************************************
 30 ************************************************************
 20 ************************************************************
 10 ************************************************************
   0....5....1....1....2....2....3....3....4....4....5....5....6
             0    5    0    5    0    5    0    5    0    5    0
               CPU% per second (last 60 seconds)

       111111111111  1             11      11    1         1    
    999000000000000990999999999999900999999009999099999999909999
    999000000000000990999999999999900999999009999099999999909999
100 ############################################################
 90 ############################################################
 80 ############################################################
 70 ############################################################
 60 ############################################################
 50 ############################################################
 40 ############################################################
 30 ############################################################
 20 ############################################################
 10 ############################################################
   0....5....1....1....2....2....3....3....4....4....5....5....6
             0    5    0    5    0    5    0    5    0    5    0
               CPU% per minute (last 60 minutes)
              * = maximum CPU%   # = average CPU%

 

May 21 08:53:58.188: %IVR-3-LOW_CPU_RESOURCE: IVR: System experiencing high cpu utilization (99/100).
     Call (callID=40) is rejected.

.May 21 09:04:10.232: %IVR-3-LOW_CPU_RESOURCE: IVR: System experiencing high cpu utilization (99/100).
     Call (callID=41) is rejected.

.May 21 09:04:18.272: %IVR-3-LOW_CPU_RESOURCE: IVR: System experiencing high cpu utilization (99/100).
     Call (callID=42) is rejected.

 

 

I hope someone can help me because with use a lot telephony for every work.

 

Best regards,

Alcides

 

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