MySQL 8.0 Release Notes
MySQL 8.0 Source Code Documentation
Thecpustat_50mstable provides raw, per-thread CPU data obtained each 50 milliseconds for each thread running in theNDBkernel.
Likecpustat_1secandcpustat_20sec, this table shows 20 measurement sets per thread, each referencing a period of the named duration. Thus,cpsustat_50msprovides 1 second of history.
Thecpustat_50mstable contains the following columns:
node_idID of the node where the thread is running
thr_noThread ID (specific to this node)
OS_user_timeOS user time
OS_system_timeOS system time
OS_idle_timeOS idle time
exec_timeThread execution time
sleep_timeThread sleep time
spin_timeThread spin time
send_timeThread send time
buffer_full_timeThread buffer full time
elapsed_timeElapsed time