21.6.15.12 The ndbinfo cpustat_50ms Table

The cpustat_50ms table provides raw, per-thread CPU data obtained each 50 milliseconds for each thread running in the NDB kernel.

Like cpustat_1sec and cpustat_20sec, this table shows 20 measurement sets per thread, each referencing a period of the named duration. Thus, cpsustat_50ms provides 1 second of history.

The cpustat_50ms table contains the following columns:

• node_id

  ID of the node where the thread is running

• thr_no

  Thread ID (specific to this node)

• OS_user_time

  OS user time

• OS_system_time

  OS system time

• OS_idle_time

  OS idle time

• exec_time

  Thread execution time

• sleep_time

  Thread sleep time

• spin_time

  Thread spin time

• send_time

  Thread send time

• buffer_full_time

  Thread buffer full time

• elapsed_time

  Elapsed time

Notes

This table was added in NDB 7.5.2.