ccmbase user in CUCM high cpu

[michellp]

I've noticed the cpu for our callmanager is above 90% constantly. Checking the cpu usage revealed that ccmbase user is the culprit.

admin:show process load cpu
 10:20:00  up 300 days, 12:32,  1 user,  load average: 2.14, 2.69, 2.39
128 processes: 127 sleeping, 1 running, 0 zombie, 0 stopped
CPU states:  cpu    user    nice  system    irq  softirq  iowait    idle
           total   91.7%    0.8%    7.4%   0.0%     0.0%    0.0%    0.0%
Mem:  2053880k av, 2035248k used,   18632k free,       0k shrd,  170104k buff
                   1381068k actv,  388752k in_d,   34396k in_c
Swap: 2048248k av,  801900k used, 1246348k free                  855844k cached
  PID USER     PRI  NI  SIZE  RSS SHARE STAT %CPU %MEM   TIME CPU COMMAND
10705 ccmbase   15   0 64872  44M 21548 S    82.7  2.2 14180m   0 ccm
 9147 tomcat    25   0  308M 271M  9660 S    16.5 13.5 24107m   0 tomcat
26831 administ  34  10  1440 1440   956 R N   0.8  0.0   0:00   0 top
    1 root      15   0   704  608   524 S     0.0  0.0   2:35   0 init
    2 root      RT   0     0    0     0 SW    0.0  0.0   0:00   0 migration/0
    3 root      15   0     0    0     0 SW    0.0  0.0   0:00   0 keventd
    4 root      34  19     0    0     0 SWN   0.0  0.0   0:00   0 ksoftirqd/0
    7 root      25   0     0    0     0 SW    0.0  0.0   0:00   0 bdflush
    5 root      15   0     0    0     0 SW    0.0  0.0   4:19   0 kswapd
    6 root      15   0     0    0     0 SW    0.0  0.0  49:10   0 kscand

What is this user and/or process?  Up till now I have not noticed any issues like loosing calls or anything but I need to resolve this asap I suppose.

To solve I wanted to reboot the server, but I can only do this outside office hours. Is it save to just restart the process during office hours? What effect will it have on the callmanager? 

[Manish Gogna]

You should collect some more details corresponding to this high CPU usage, the following outputs will help

show status

show hardware

utils diagnose test

utils core active list

Restarting callmanager service during production hours will be service impacting, it should be done during off production hours.

If you find any core dumps in the output of "utils core active list" or any issues in the output of "utils diagnose test" then you should engage TAC to get further inputs.

Manish

[michellp]

Hello Manish,

Thanks for your reply.

admin:show status

Host Name    : CUCM01
Date         : Tue Jul 21, 2015 13:25:22
Time Zone    : Europe/Amsterdam
Locale       : en_US.UTF-8
Product Ver  : 6.1.4.1000-10
Platform Ver : 2.0.0.1-1

Uptime:
 13:25:25  up 300 days, 15:38,  1 user,  load average: 1.97, 2.29, 2.22

CPU Idle:  00.00%  System:  00.00%    User:                          %
  IOWAIT:  00.00%     IRQ:  00.00%    Soft:  00.00%   Intr/sec: 122.73

Memory Total:        2053880K
        Free:          19324K
        Used:        2034556K
      Cached:         855760K
      Shared:              0K
     Buffers:         170932K

                        Total            Free            Used
Disk/active         27656340K       16388756K       10986608K (41%)
Disk/inactive       27656372K       16142560K       11232836K (42%)
Disk/logging        96245392K       62693012K       28663404K (32%)

admin:show hardware

HW Platform       : 7816H3
Processors        : 1
Type              : Intel(R) Celeron(R) D CPU 3.20GHz
CPU Speed         : 3200
Memory            : 2048 MBytes
Object ID         : 1.3.6.1.4.1.9.1.900
OS Version        : UCOS 3.0.0.0-78
Serial Number     : MX123456GS

RAID Version      :
Firmware version not known
BIOS Information  :
Vendor: HP
Version: W04
Release Date: 06/10/2008

RAID Details      :
RAID not configured

admin:utils diagnose test

Log file: /var/log/active/platform/log/diag5.log

Starting diagnostic test(s)
===========================
test - disk_space          : Passed (available: 16005 MB, used: 10730 MB)
skip - disk_files          : This module must be run directly and off hours
test - service_manager     : Passed
test - tomcat              : Passed
test - validate_network    : Passed
test - system_info         : Passed (Collected system information in diagnostic log)
test - ntp_reachability    : Passed
test - ntp_clock_drift     : Passed
test - ntp_stratum         : Passed

Diagostics Completed

The last command is not supported. This output does not really show anything out of the ordinary if you ask me.

Restarting callmanager service during production hours will be service impacting, it should be done during off production hours.

That's why I'm asking what this user is or what service and if it's possible to restart just this user process.

Thanks again

[Manish Gogna · Accepted solution]

I don't see an option to just restart this component. Looking at the status of the CPU usage i would actually suggest a server restart.

Manish

[michellp]

That is unfortunate. I guess it will be a reboot then. Thanks anyway Manish.