disk_write_speed_base table provides base
information about the speed of disk writes during LCP, backup,
and restore operations.
The following table provides information about the columns in
disk_write_speed_base table. For each
column, the table shows the name, data type, and a brief
description. Additional information can be found in the notes
following the table.
Table 18.349 Columns of the disk_write_speed_base table
|node_id||integer||Node ID of this node|
|thr_no||integer||Thread ID of this LDM thread|
|millis_ago||integer||Milliseconds since this reporting period ended|
|millis_passed||integer||Milliseconds elapsed in this reporting period|
|backup_lcp_bytes_written||integer||Number of bytes written to disk by local checkpoints and backup processes during this period|
|redo_bytes_written||integer||Number of bytes written to REDO log during this period|
|target_disk_write_speed||integer||Actual speed of disk writes per LDM thread (base data)|
This table was added in NDB 7.4.1.