21.6.15.19 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 the 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 the redo log each 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 the redo log each second, averaged over the last 60 seconds