Don't the numbers for CPU and Device I/O seem kind of high?
 
 
>> REV NMUSIC-L f=m
>
>> ST NMUSIC-L f=m
>
>
>Summary of resource utilization
>-------------------------------
> CPU time:      308.78 sec                 Device I/O: 10503
> Overhead CPU:   18.53 sec                 Paging I/O:     1
> CPU model:       4381                     DASD model:  3380
>