anchor.diff:  
   ### When to Scale
   
  +When determining whether to scale `cloud\_controller\_clock` and `cc\_deployment\_updater`, look for the following:
  +
   #### Key Metrics
  +
  +Cloud Controller emits the following metrics:
   
   * `cc.Diego_sync.duration` is continuously increasing over time.
   * `system.cpu.user` is high on the scheduler VM.
   
  -#### Heuristics
  +#### Heuristic Failures
  +
  +The following behaviors may occur:
   
   * Diego domains are frequently unfresh. For more information, see the [Domain Freshness](https://github.com/cloudfoundry/bbs/blob/master/doc/domains.md#domain-freshness) section in the _Overview of Domains_ topic on GitHub.
   * The Diego Desired LRP count is larger than the total process instance count reported through the Cloud Controller APIs.
   * Deployments are slow to increase and decrease instance count.
   
  -#### Logs
  +#### Relevant Log Files
  +
  +You can find the above heuristic failures in the following log files:
   
   * `/var/vcap/sys/log/cloud_controller_clock/cloud_controller_clock.log`
   * `/var/vcap/sys/log/cc_deployment_updater/cc_deployment_updater.log`
  
positive.code: 
  ### When to Scale
  
  #### Key Metrics
  
  * `cc.requests.outstanding` is at or consistently near 20.
  * `system.cpu.user` is above 0.85 utilization of a single core on the API VM.
  * `cc.vitals.cpu_load_avg` is 1 or higher.
  * `cc.vitals.uptime` is consistently low, indicating frequent restarts (possibly due to memory pressure).
  
  #### Heuristics
  
  * There is a latency in average response.
  * Web UI responsiveness or timeouts are degraded.
  * `bosh is --ps --vitals` has elevated CPU usage for the API instance group's `cloud_controller_ng` job.
  
  #### Logs
  
  * `/var/vcap/sys/log/cloud_controller_ng/cloud_controller_ng.log`
  * `/var/vcap/sys/log/cloud_controller_ng/nginx-access.log`
  
negative.code: 
  ### When to Scale
  
  When determining whether to scale `cloud\_controller\_worker\_local`, look for the following:
  
  #### Key Metrics
  
  Cloud Controller emits the following metrics:
  
  * `cc.job_queue_length.cc-VM_NAME-VM_INDEX` is continuously growing.
  * `cc.job_queue_length.total` is continuously growing.
  
  #### Heuristic Failures
  
  The following behaviors may occur:
  
  * `cf push` is intermittently failing.
  * `cf push` average time is elevated.
  
  #### Relevant Log Files
  
  You can find the above heuristic failures in the following log files:
  
  * `/var/vcap/sys/log/cloud_controller_ng/cloud_controller_ng.log`
  
  