---
features:
  - |
    The following new statsd metrics are available in order to monitor
    Zuul system performance:

    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.event_enqueue_time`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.merge_request_time`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.layout_generation_time`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.job_freeze_time`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.repo_state_time`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.node_request_time`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.job_wait_time`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.event_job_time`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.read_time`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.write_time`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.read_objects`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.write_objects`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.read_znodes`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.write_znodes`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.read_bytes`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.write_bytes`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.event_process`
    * :stat:`zuul.tenant.<tenant>.pipeline.<pipeline>.handling`
    * :stat:`zuul.tenant.<tenant>.reconfiguration_time`