Why would a small change in performance of an application really matter that much?
The major effect of a change in performance occurs if the application or work occurs during the peak rolling 4-hour average (R4HA). The most expensive IBM software and ISV software are charged based on the number of MSUs during the peak R4HA during the month. So, it’s recommended that you use BoxScore II to analyze the peak R4HA time period.
To show you an example of the costs difference, look at two LPARs (or machines), each containing z/OS, CICS, and DB2. An unexpected increase of 5 percent on a 200 MSU machine during the peak R4HA would cost about $60,000 per year just for z/OS, CICS, and DB2 software. That same 5 percent increase on a 2000 MSU machine would cost more than $190,000 for the same software.
There are several reasons for an unexpected increase of 5 percent, and BoxScore II can not only identify if that occurs, but can pinpoint the job steps or transactions responsible. Note that if the increase is simply due to additional workload, BoxScore II can identify that situation, as well. It’s an excellent tool to use in conjunction with reconciliation of your IBM bill on a monthly basis.