Friday, February 9, 2018

In a multi node environment, one node performance is slow in a cluster. How would you debug it ?

Multi node environment : Multiple JVMs connecting to same Database.

Out of four nodes, lets say a node is not doing better, we can check the below for that node :

  • PegaRULES log file
  • JVM log file. We can use JConsole.
  • Check for thread dumps, heap dumps. And we can use any thread dump/heap dump analyser to identify bottlenecks.
  • Check for any OutOfMemory issues
  • Check for any requestor timeouts
  • From SMA we can navigate to the node, to analyse JVM level settings.
  • Also AES would give statistics on health check if that cluster is setup in AES.
  • And we can check if we can offload the node by analysing traffic to load balancer.

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