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pshashipreetham
18-Opal
pshashipreetham18-Opal
18-Opal
May 2, 2022
Solved

Tomcat using 100% of CPU Memory

  • May 2, 2022
  • 3 replies
  • 6524 views

When checked in the Application Log, there is following error:

 

[L: ERROR] [O: c.t.s.s.w.p.WSExecutionInstance] [I: ] [U: Administrator] [S: ] [P: ] [T: WSExecutionProcessor-479] error executing APIRequest Message: Unable to dispatch [ uri = /Things/RemoteThingName/Services/UpdateSubscribedPropertyValues/]: Unable to Invoke Service UpdateSubscribedPropertyValues on RemoteThingName: java.lang.Exception: Invalid Property Name: [Property1], sending ERROR ResponseMessage to caller!

 


@c_lowy @paic @slangley @CarlesColl 

Thanks,
Shashi

Best answer by pshashipreetham

Got the issue,

 

So there are a few issues that got noticed.

  1. There was a Software Antimalware Service Executable running 10+ Postgres Service Instances in the background - I googled and got rid of the software.
  2. A few Developer-created test Schedulers and Timers were creating issues; got rid of them too.

Thanks,

Shashi.

3 replies

P
PaiChung22-Sapphire I
22-Sapphire I
May 2, 2022

Is your system using 100% CPU or is Tomcat using 100% Memory in the JVM?

Unless you have a very low amount of memory on your server, it will be more likely to hit 100% CPU, which would probably mean that you are spawning threads faster than that ThingWorx processes them.

For example your subscriptions fire every second, but your subscriptions actually take longer than 1 second to be processed so that the next set of subscriptions fire off and start to stack up.

    pshashipreetham
    18-Opal
    pshashipreetham18-OpalAuthor
    18-Opal
    May 2, 2022

    Hi @PaiChung ,

    how can I know Tomcat is using 100% Memory in the JVM ?

    Thanks,
    Shashi.

    P
    PaiChung22-Sapphire I
    22-Sapphire I
    May 2, 2022

    Not sure if you set a JVM Memory max limit, but that would show in the server memory usage.

    Also you can look within ThingWorx by going to Monitoring/System Statistics

    You'll also see an Event Queue there, if that is continuously going up or staying very high would indicate that your are 'overloading' the processor(s)

      S
      slangleyCommunity Manager
      Support
      May 11, 2022

      Hi @psp316r

       

      Have you been able to find a solution to your performance related issues?  If not, I recommend opening a case.  I will be happy to open one on your behalf if you agree but you will need to private message me your PTC Support email address to do so.  A current support agreement will be required.

       

      Regards.

       

      --Sharon

      pshashipreetham
      18-Opal
      pshashipreetham18-OpalAuthorAnswer
      18-Opal
      July 21, 2022

      Got the issue,

       

      So there are a few issues that got noticed.

      1. There was a Software Antimalware Service Executable running 10+ Postgres Service Instances in the background - I googled and got rid of the software.
      2. A few Developer-created test Schedulers and Timers were creating issues; got rid of them too.

      Thanks,

      Shashi.

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