Estimating Calculation Time

When you perform a simulated calculation, you record the results and use them to estimate actual calculation time.

  To estimate total calculation time:

  1. Note the times of all the intervals between application log messages generated by SET NOTICE HIGH.

    See Table 185.

  2. Use the following calculation to estimate the time for a real calculation:

    Total time required for simulated calculation, divided by the first simulated calculation notice interval, multiplied by the first real calculation time interval.

    Table 185. Sample Intervals Between Log Messages

    Calculation Notice Number

    Simulated Calculation Time Interval (in seconds)

    Sparse Dimension Calculation Interval (in seconds)

    1

    7

    45

    2

    5

     

    3

    6

     

    4

    3

     

    5

    4

     

    6

    2

     

    7

    6

     

    8

    4

     

    9

    3

     

    10

    3

     

    Total calculation time

    43

     

    In this example, 43 / 7 * 45 = 276.4 seconds, so the real calculation should take 276.4 seconds.