CPU usage increases on VSP


Doc ID    SOLN298568
Version:    1.0
Status:    Published
Published date:    23 Oct 2016
Author:   
Ying Sun
 

Details

Cpu usage increases
Cpu usage increasessystem information:VSP 6.3.8
CM 6.3.11issue time:2016-9-20 00:50No services impact.

Problem Clarification

Request cause of Cpu usage increases。

Cause

The CPU usage increased due to Tomcat restart. Tomcat restart is due to out of Memory. System platform as many CDOMs do have a high memory footprint which doesn't fit into the 512 meg we have allocated to it really. We expect high memory usage on cdom to be fixed in System Platform 6.4 by using the upgraded xen that relies less on the libvirt interface.

 

Logs below:

2016-09-20 00:53:10,312 INFO  [com.avaya.vsp.webconsole.statistics.RestartIfQuite] All conditions satisfied, restarting tomcat

2016-09-20 00:53:10,342 WARN  [com.avaya.vsp.webconsole.statistics.RestartIfQuite]

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

cdom webconsole virtual memory exceeded tomcat restart threshold for 3 minutes

tomcat conditions:

 

    noTemplateInstallInProgress = true

    noPlatformUpgradeInProgress = true

    nonoPatchOperationInProgress = true

    nobodyLoggedOn = true

 

System appears to be quiescent, so restart tomcat now.

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

2016-09-20 00:53:11,863 INFO  [com.avaya.vsp.webconsole.util.CommandExecutorOutput] sudo nohup /sbin/service tomcat restart output:

Shutting down tomcat: done.

Starting tomcat: done.

 

Solution

Limiation of Cdom memory is only 512M. Hope VSP 6.4 could have a better performce of libvirt

 


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