21.6.15.17 The ndbinfo disk_write_speed_base Table

The disk_write_speed_base table provides base information about the speed of disk writes during LCP, backup, and restore operations.

The disk_write_speed_base table contains the following columns:

node_id

Node ID of this node
thr_no

Thread ID of this LDM thread
millis_ago

Milliseconds since this reporting period ended
millis_passed

Milliseconds elapsed in this reporting period
backup_lcp_bytes_written

Number of bytes written to disk by local checkpoints and backup processes during this period
redo_bytes_written

Number of bytes written to REDO log during this period
target_disk_write_speed

Actual speed of disk writes per LDM thread (base data)