Tuning CA PMO › Tuning at Installation Time › Performing Initial Tuning

Performing Initial Tuning

Perform these steps:

1. Let CA PMO run for one hour. Then start up PMOMON.
2. When PMOMON starts up, you will see the main display menu. Enter the D1 command to view the D1 display. Examine this display to see if the managed list is sorted more than six times per hour on average, or if the minimum sort interval is less than seven minutes. If either of the above cases is true, CA PMO is resolving too few LNKLST library searches. To fix this problem, increase the size of the managed list by raising the value of the MLSIZE parameter. Ideally, the list should be sorted two or three times per hour.
3. Look at the D2 display and determine the percentage of CA PMO-assisted LNKLST BLDL/FIND requests. Divide the number of CA PMO-assisted LNKLST requests by the total number of LNKLST requests. The result should be at least 90% (.9). Also look at the D5 display and divide the number of library directory searches that CA PMO resolved by the total number of library directory searches. Again, the result should be at least 90%. If either of these percentages is less than 90%, consider increasing the value of the MLSIZE parameter.
4. Check the D3 and D4 displays before and after you raise the value of the MLSIZE parameter. Changing the value of MLSIZE may increase the time for managed list searches, but it may also save elapsed time. The reason for this is that CA PMO resolves more LNKLST library searches when it uses a larger managed list.

Note: If you change the value of a CA PMO parameter, you must stop CA PMO with the P PMO command and restart it with the S PMO command for the change to take effect.