title: Jenkins 2 Build Processors for one Job
body: <p>i have a little problem with an multibranch Pipeline Job. Following problem I have a job that always requires 2 build processors. Unfortunately I don't want to unlock more build processors in Jenkins but want to know why Jenkins always uses 2 build cores for this job. Can anyone help me why jenkins uses 2 processors for this job at the same time ?</p>
  
  <pre><code>pipeline {
      options { disableConcurrentBuilds() }
      agent { label 'myServer' }
  
      stages {
  
          stage('helloworld') {
              agent {
                  docker {
                      image 'ubuntu:16.04'
                      label 'myServer'
                  }
              }
              steps {
                  dir('build') {
                      sh 'npm i'
                      sh 'npm run gulp clean:all'
                      sh 'npm run gulp ci:all'
                  }
              }
          }
  
      }
  }
  </code></pre>