10-02-2012 08:29 AM - edited 03-16-2019 01:29 PM
We have two CUCM in our cluster on VM. They both have 4 Gigs of RAM, in RTMT we are seeing 148 - 150 megs of free memory. I need to confirm if this is acceptable. If not where should I be looking next.
We also had a few LowVirtualyMemory starting last week. The environment has 100 users, the only change made which was a week priory the alerts was, we added another Vcpu. We only had one before.
If anyone has encountered this issue before or has any ideas please share.
Thansk,
10-03-2012 01:01 AM
Hi Ayaz,
we had a similar problem at our cluster and the problem seems to be due to the CUCM version, we had 8.6.2.20000-2 version and upgraded to 8.6.2.22900-9 and now everything is working fine. I thinks it's a known bug in the prior version, try upgrading to the newest version, and if that doesn't work try opening a TAC case. Upgrade worked for us.
Marko
10-04-2012 11:49 AM
Thanks for the repsonse, can you tell me how much free memory you had before and after the upgrade?
Ayaz
10-04-2012 11:51 AM
I just checked the version of CUCM and they are at the suggested upgrade, 8.6.2.22900-9.
Ayaz
10-04-2012 11:02 PM
Hi Ayaz,
Can you send the output of show status from the call manager CLI, its seen sometimes when call manager is running from a long time this issue appears..
Thanks
Rishi
10-05-2012 04:57 AM
Hello Ayaz,
First of all the the virtual memory usage going high is very normal in case of CUCM and it is acceptable as long as there is no production issue. I have seen usage going high as 98-99% and everything works fine without any issues.
Ususally Tomcat is always the highest consumer of memory so please check the process which is utilizing the highest memory first with " show process load memory".
Then check the number of active connections which CUCM is having and memory usage goes high if it is high and it happens generally when the CUCM has been up for a longer time, so you go for a reboot of the CUCM.
Akki
10-09-2012 10:53 AM
Below is ther requested output,
admin:show status
Host Name : PD76TXXX01
Date : Fri Oct 5, 2012 12:44:12
Time Zone : Eastern Daylight Time (America/Toronto)
Locale : en_US.UTF-8
Product Ver : 8.6.2.20000-2
OS Ver : 5.0.0.0-2
License MAC : c406e6abde11
Uptime:
12:44:14 up 20 days, 18:25, 1 user, load average: 4.20, 3.76, 3.67
CPU Idle: 49.75% System: 01.00% User: 01.99%
IOWAIT: 47.26% IRQ: 00.00% Soft: 00.00% Intr/sec: 321.78
Memory Total: 4016920K
Free: 159936K
Used: 3856984K
Cached: 394164K
Shared: 0K
Buffers: 36216K
Total Free Used
Disk/active 14410496K 2368760K 11892972K (84%)
Disk/inactive 14410560K 13499216K 167512K (2%)
Disk/logging 50179664K 30235108K 17354380K (37%)
=================================================================
10.76.161.60
admin:show status
Host Name : PD76TXXX02
Date : Fri Oct 5, 2012 12:45:59
Time Zone : Eastern Daylight Time (America/Toronto)
Locale : en_US.UTF-8
Product Ver : 8.6.2.20000-2
OS Ver : 5.0.0.0-2
License MAC : 325e490660f1
Uptime:
12:46:00 up 20 days, 18:15, 1 user, load average: 2.15, 3.14, 3.40
CPU Idle: 99.50% System: 00.50% User: 00.00%
IOWAIT: 00.00% IRQ: 00.00% Soft: 00.00% Intr/sec: 306.93
Memory Total: 4016920K
Free: 157344K
Used: 3859576K
Cached: 1313536K
Shared: 0K
Buffers: 161360K
Total Free Used
Disk/active 14410496K 2322400K 11939332K (84%)
Disk/inactive 14410560K 13499216K 167512K (2%)
Disk/logging 50179664K 36211792K 11377696K (24%)
I would like to know if the there is enough free memory, or is it too low. I don't want the system to crash if more memory is required.
Thanks,
Ayaz
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