## TASKGROUPSTATISTICS

### Definition

The system table TASKGROUPSTATISTICS contains information about task groups and their resource usage since the last start of the database instance.

### Structure

TASKGROUPSTATISTICS

TASKGROUPID | FIXED(10) | ID of the task group
TASKCLUSTER | CHAR(20) | Task cluster to which this task group belongs
TASKCOUNT | FIXED(10) | Number of tasks in this group
USEDRUNQUEUELENGTH | FIXED(10) | Number of tasks lined up for CPU assignment
MAXUSEDRUNQUEUELENGTH | FIXED(10) | Maximum number of tasks lined up for CPU assignment
IDLECOUNT | FIXED(20) | Number of time intervals in which the CPU was released
IDLETIME | FIXED(20) | Total time for which the CPU was released (µs)
IOWAITCOUNT | FIXED(20) | Number of time intervals in which waits for outstanding I/O operations occurred
IOWAITTIME | FIXED(20) | Total wait time for outstanding I/O operations (µs)
USEDSYSTEMTIME | FIXED(20) | Total CPU time used in system mode (µs)
USEDUSERTIME | FIXED(20) | Total CPU time used in user mode (µs)

See also:

TASKGROUPSTATISTICSRESET

Concepts of the Database System, Overview of Tasks, Task Switching