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21.5.14.19 The ndbinfo disk_write_speed_aggregate_node Table

The disk_write_speed_aggregate_node table provides aggregated information per node about the speed of disk writes during LCP, backup, and restore operations.

The disk_write_speed_aggregate_node table contains the following columns:

  • node_id

    Node ID of this node

  • backup_lcp_speed_last_sec

    Number of bytes written to disk by backup and LCP processes in the last second

  • redo_speed_last_sec

    Number of bytes written to REDO log in the last second

  • backup_lcp_speed_last_10sec

    Number of bytes written to disk by backup and LCP processes per second, averaged over the last 10 seconds

  • redo_speed_last_10sec

    Number of bytes written to REDO log per second, averaged over the last 10 seconds

  • backup_lcp_speed_last_60sec

    Number of bytes written to disk by backup and LCP processes per second, averaged over the last 60 seconds

  • redo_speed_last_60sec

    Number of bytes written to disk by backup and LCP processes per second, averaged over the last 60 seconds