View Source prometheus_mnesia_collector (prometheus v4.13.0)

Collects Mnesia metrics mainly using mnesia:system_info/1.

Exported metrics

  • erlang_mnesia_held_locks Type: gauge. Number of held locks.
  • erlang_mnesia_lock_queue Type: gauge. Number of transactions waiting for a lock.
  • erlang_mnesia_transaction_participants Type: gauge. Number of participant transactions.
  • erlang_mnesia_transaction_coordinators Type: gauge. Number of coordinator transactions.
  • erlang_mnesia_failed_transactions Type: counter. Number of failed (i.e. aborted) transactions.
  • erlang_mnesia_committed_transactions Type: gauge. Number of committed transactions.
  • erlang_mnesia_logged_transactions Type: counter. Number of transactions logged.
  • erlang_mnesia_restarted_transactions Type: counter. Total number of transaction restarts.
  • erlang_mnesia_memory_usage_bytes Type: gauge. Total number of bytes allocated by all mnesia tables.
  • erlang_mnesia_tablewise_memory_usage_bytes' Type: gauge. Number of bytes allocated per mnesia table *erlang_mnesia_tablewise_size' Type: gauge. Number of rows present per table

Configuration

Metrics exported by this collector can be configured via mnesia_collector_metrics key of the prometheus app environment.

Available options:

  • held_locks for erlang_mnesia_held_locks;
  • lock_queue for erlang_mnesia_lock_queue;
  • transaction_participants for erlang_mnesia_transaction_participants;
  • transaction_coordinators for erlang_mnesia_transaction_coordinators;
  • transaction_failures for erlang_mnesia_failed_transactions;
  • transaction_commits for erlang_mnesia_committed_transactions;
  • transaction_log_writes for erlang_mnesia_logged_transactions;
  • transaction_restarts for erlang_mnesia_restarted_transactions;
  • memory_usage_bytes for erlang_mnesia_memory_usage_bytes.

By default all metrics are enabled.