Mnesia Collector

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_total

  Type: counter.
  Number of failed (i.e. aborted) transactions.

• erlang_mnesia_committed_transactions_total

  Type: gauge.
  Number of committed transactions.

• erlang_mnesia_logged_transactions_total

  Type: counter.
  Number of transactions logged.

• erlang_mnesia_restarted_transactions_total

  Type: counter.
  Total number of transaction restarts.

Configuration

Metrics exported by this collector can be configured via mnesia_collector_metrics key of 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_total;
• :transaction_commits for erlang_mnesia_committed_transactions_total;
• :transaction_log_writes for erlang_mnesia_logged_transactions_total;
• :transaction_restarts for erlang_mnesia_restarted_transactions_total.

By default all metrics are enabled.