rocks_spool_num_running_compactions
Number of background compactions currently running for this rocksdb instance.Info
This metric has labels which means that the system will track the metric for each combination of the possible labels that are active. Certain labels, especially those that correlate with source or destination addresses or domains, can have high cardinality. High cardinality metrics may require some care and attention when provisioning a downstream metrics server.
Since: Dev Builds Only
The functionality described in this section requires a dev build of KumoMTA. You can obtain a dev build by following the instructions in the Installation section.
In a healthy, actively-written spool this is typically non-zero
in bursts. A value persistently stuck at 0 while
rocks_spool_compaction_pending or
rocks_spool_estimate_pending_compaction_bytes is growing is a
strong indicator that the background worker is wedged --
cross-reference rocks_spool_write_stopped and
rocks_spool_background_errors.