Documentation Home
MySQL 8.0 Reference Manual
Related Documentation Download this Manual
PDF (US Ltr) - 48.2Mb
PDF (A4) - 48.2Mb
PDF (RPM) - 43.8Mb
HTML Download (TGZ) - 11.0Mb
HTML Download (Zip) - 11.1Mb
HTML Download (RPM) - 9.5Mb
Man Pages (TGZ) - 239.8Kb
Man Pages (Zip) - 343.5Kb
Info (Gzip) - 4.4Mb
Info (Zip) - 4.4Mb
Excerpts from this Manual

22.5.14.17 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)