MSU4HPCT and MSU4HAVG

Document ID : KB000053717
Last Modified Date : 14/02/2018
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Description:

MSU4HPCT and MSU4HAVG - what there is to know about these new fields.

Solution:

There are two rolling 4 hour average MSU monitor variables available in CA SYSVIEW r12:

  Variable         Description                                            
 -----------    ----------------------                                 
 MSU4HAVG       4 hour average MSU                                                
 MSU4HPCT       4 hour average MSU pct  

MSU4HAVG would be coded using a numeric MSU value. So, for example, you would code a limit of 25 to be notified if the rolling 4-hour average exceeded 25 MSU's. MSU4HPCT is the same rolling 4-hour MSU, but expressed as a percentage of the LPAR's total image capacity. So, if total image capacity was 38, then using the above example MSU4HPCT would be coded as 66 (25 as a percentage of 38).

There are no threshold variables available to monitor the growth of the MSU value from interval to interval. If you are licensed for the CAPTURE feature, there are some new displays in r12 that will help. For example, the RMMSU command.

From HELP for that command we show:

+------------------+--------------------------------------------------+        
| 4h Avg           | The average MSU/hour consumed during the last    |        
|                  | 4 hours.                                         |        
+------------------+--------------------------------------------------+

If you also had CA OPS/MVS, you could create an exec to get this data using the SYSVIEW REXX API. Or write an exec to get the data directly from the RCT.

So these fields are useful where Software Capping is concerned. There is no way at this time to generate an alert if capping is taking place for an LPAR, just if the 4 hour average is over its threshold.