When you are using a high number of agents running the BO UI increase the number of request to the URL JOB_URL/runs/2/nodes/?limit=10000, this could become insane and makes that the UI blinks every time making it unusable even when the jobs are done.

Steps to replicate

• You need a system that can provision at least 100 agents to see the behavior
• Execute the following pipeline three times to try to provision more than 100 agents

  #!/usr/bin/env groovy
  
  pipeline {
    agent { label 'master' }
    stages {
      stage('test'){
        steps{
          script {
              def tasks = [:]
              for(def i = 0; i < 50; i++){
                  tasks["t-${i}"] = parallelTask()
              }
              parallel(tasks)
          }
        }
      }
    }
  }
  
  def parallelTask(){
      return {
          node('immutable'){
              timeout(time: 90, unit: 'SECONDS') {
                  echo "NOOP"
                  sleep 1
              }
          }
      }
  }
  

• Open the BO UI on one of the builds
• Open the Chrome inspector on the network tab, after a minute or so you will start seen tons of REST request like 'JOB_URL/runs/2/nodes/?limit=10000' and 'JENKINS_URL/blue/rest/organizations/jenkins/computers/' meanwhile every few seconds the UI will blink