“CtlibController Activity” describes how
often Adaptive Server checks for Client Library (CTLIB)
controller events (indicated in the Polls row),
and how many times the Client Library returns an event (in the Polls
Returning Events row).
“DiskController Activity” describes how
often Adaptive Server checks for disk controller events (indicated
in the Polls row), and
how many times the disk returns an event (in the Polls
Returning Events row).
“NetController Activity” describes how often
Adaptive Server checks for network controller events (indicated
in the Polls row), and
how many times the network returns an event (in the Polls
Returning Events row).
These sections include these rows:
Polls – number of times this controller polled the operating system for a completion.
Polls Returning Events – number of times this controller polled the operating system and received at least one event.
Polls Returning Max Events – number of times the operating system poll returned the maximum number of events.
Total Events – total number of I/O events returned.
Events Per Poll – average events returned in each poll.
If you configure multiple disk or network tasks, the data that appears is the aggregate of all tasks for that controller.
Consider adding disk or network tasks if:
“Polls Returning Max Events” is greater than zero.
The value for “Events per Poll” is greater than three.
However, review the values for “Thread Utilization” for the controllers and the overall system load before you add additional disk or network tasks.
