256IBM iDoctor for iSeries Job Watcher: Advanced Performance Tool
Collection specification tips
Interval size
If you suspect that a large number of task counts are active on your system, then you need to
carefully decide what to set the collection interval to. If you suspect that your interval size is
too small, then run the query in ExampleE-1 over the collection member in the QAPYJWTDE
file to find out the maximum seconds that Job Watcher needed to finish its snapshot work.
Example: E-1 Query to find snapshot times and total active task counts
SELECT interval, count(distinct(taskcount)) as tot_taskcounts,
max(startod) as max_startod, min(sta ...
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