## Notes 

OS thread ID 

• os_now 

OS time (ms) 

• os_ru_utime 

OS user CPU time (µs) 

• os_ru_stime 

OS system CPU time (µs) 

• os_ru_minflt 

OS page reclaims (soft page faults) 

• os_ru_majflt 

OS page faults (hard page faults) 

• os_ru_nvcsw 

OS voluntary context switches 

• os_ru_nivcsw 

OS involuntary context switches 

os_time  uses the system gettimeofday()  call. 

The values of the os_ru_utime , os_ru_stime , os_ru_minflt , os_ru_majflt , os_ru_nvcsw , and os_ru_nivcsw  columns are obtained using the system getrusage()  call, or the equivalent. 

Since this table contains counts taken at a given point in time, for best results it is necessary to query this table periodically and store the results in an intermediate table or tables. The MySQL Server’s Event Scheduler can be employed to automate such monitoring. For more information, see Section 25.4, “Using the Event Scheduler” . 

## 23.5.14.55 The ndbinfo transporters Table 

This table contains information about NDB transporters. 

The transporters  table contains the following columns: 

• node_id 

This data node’s unique node ID in the cluster 

• remote_node_id 

The remote data node’s node ID 

• status 

