Spectrum OneClick search/login performance issues

Products

• Network Observability
• Spectrum

Issue/Introduction

Intemitttenly, search may not finish and Oneclick is hangs, or users cannot login anymore.

Environment

Spectrum 24.3.3 - 24.3.10

Cause

DE168030 

Resolution

This issue is under investigation by Spectrum Engineering.


Workaround:


1) Make a copy of the web.xml (backup purposes)

  cd $SPECROOT/tomcat/webapps/spectrum/WEB-INF/
  cp -p web.xml web.xml.preMRThreads.backup

2) Edit $SPECROOT/tomcat/webapps/spectrum/WEB-INF/web.xml and look for:

com.aprisma.topo.ModelRepository.ThrottledModelReadCount

Example section to look for:

 <context-param xmlns="">
    <param-name>com.aprisma.topo.ModelRepository.ThrottledModelReadCount</param-name>
    <param-value>5000</param-value>
    <description>This parameter defines the maximum number of models the Model
        Repository will read in a single request to a SpectroSERVER.</description>
  </context-param>

Just below this section add:

  <context-param xmlns="">
    <param-name>com.aprisma.topo.ModelRepository.ThrottledModelReadThreads</param-name>
    <param-value>128</param-value>
    <description>This parameter defines the maximum number of threads used to read from
       the Model Repository.</description>
  </context-param>

Make sure this is pasted in plain text, perhaps by copying to notepad first.

Example:

  <context-param xmlns="">
    <param-name>com.aprisma.topo.ModelRepository.ThrottledModelReadCount</param-name>
    <param-value>5000</param-value>
    <description>This parameter defines the maximum number of models the Model
        Repository will read in a single request to a SpectroSERVER.</description>
  </context-param>
  <context-param xmlns="">
    <param-name>com.aprisma.topo.ModelRepository.ThrottledModelReadThreads</param-name>
    <param-value>128</param-value>
    <description>This parameter defines the maximum number of threads used to read from
       the Model Repository.</description>
  </context-param>
  <context-param xmlns="">
    <param-name>com.aprisma.topo.ModelRepository.PurgeTimerPeriod</param-name>
    <param-value>300</param-value>
    <description>This parameter defines the time interval in seconds that the
        ModelRepository will check for models eligible to be purged.</description>
  </context-param>

Note the new section.


3) Restart Tomcat:

cd $SPECROOT/tomcat/bin/

  ./stopTomcat.sh

  <wait 60 seconds for OS to release ports>

  ./startTomcat.sh