ndbinfo: The NDB Cluster Information Database Standard deviation in number of bytes written to disk by backup and LCP processes per second, averaged over the last 10 seconds Standard deviation in number of bytes written to REDO log per second, averaged over the last 10 seconds Number of bytes written to disk by backup and LCP processes per second, averaged over the last 60 seconds Number of bytes written to REDO log per second, averaged over the last 10 seconds Standard deviation in number of bytes written to disk by backup and LCP processes per second, averaged over the last 60 seconds Standard deviation in number of bytes written to REDO log per second, averaged over the last 60 seconds Number of seconds since last node start that disk writes were slowed due to REDO log I/O lag Number of seconds since last node start that disk writes were slowed due to high CPU usage Number of seconds since last node start that disk write speed was set to minimum Actual speed of disk writes per LDM thread (aggregated) 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 of this node Number of bytes written to disk by backup and LCP processes in the last second 4550 23.5.14.26 The ndbinfo disk_write_speed_aggregate_node Table • backup_lcp_speed_last_sec • node_id • current_target_disk_write_speed • disk_write_speed_set_to_min • slowdowns_due_to_high_cpu • slowdowns_due_to_io_lag • std_dev_redo_speed_last_60sec • std_dev_backup_lcp_speed_last_60sec • redo_speed_last_60sec • backup_lcp_speed_last_60sec • std_dev_redo_speed_last_10sec