ndbinfo: The NDB Cluster Information Database Number of times that a  get_page()  call has resulted in a wait for I/O or completion of I/O already begun during the past second Number of  get_page()  calls waiting for I/O or I/O completion that have completed during the past second Each row in this table corresponds to an instance of  PGMAN ; there is one such instance per LDM thread plus an additional instance for each data node. The  diskstat  table was added in NDB 8.0.19. The  diskstats_1sec  table provides information about writes to Disk Data tablespaces over the past 20 seconds. The  diskstat  table contains the following columns: Node ID of this node ID of reporting instance of  PGMAN Pages made dirty during the designated 1-second interval Reads issued during the designated 1-second interval Reads completed during the designated 1-second interval Writes issued during the designated 1-second interval Writes completed during the designated 1-second interval Number of times a page write has required a log write during the designated 1-second interval Number of log writes completed during the designated 1-second interval 4554 • log_writes_completed • log_writes_issued • writes_completed • writes_issued • reads_completed • reads_issued • pages_made_dirty • block_instance • node_id • get_page_reqs_completed Notes 23.5.14.29 The ndbinfo diskstats_1sec Table