Number Of Jobs Per Measured Day - IBM PERFORMANCE MANAGEMENT FOR POWER SYSTEMS - GRAPH REFERENCE DOCUMENT Reference

Number of Jobs per Measured Day

Daily Number of Jobs Graph.
An interactive job starts when a user signs on to the system and ends when the user signs off. A
batch job begins when the job becomes active from the job queue. The Number of Jobs per
Measured Day graph shows the number of active jobs per measured day during the period.
The thin (blue) line shows the number of interactive jobs per measured day. The thick (red) line
indicates the number of batch jobs per measured day.
The Facts section of the graph displays the job characteristics for the current and previous two
months. It also shows the CPU time in seconds, the average number of I/Os, and the average
number of synchronous I/Os.
A transaction must wait for a synchronous disk I/O to complete before it can continue processing.
On the other hand, a transaction can continue processing when an asynchronous I/O is
requested. As a result, even the asynchronous I/O may affect the transaction response time.
Throughput can decrease over time if transactions require more synchronous I/O.
PM for Power Systems Graph Reference Document 71