Based on Figure 9-14, the total service time is 2,091.82 seconds, or 2,091,820 milliseconds. Determine the service time by dividing the total service time by the unit of work value. Here is the service time math:

Determine the queue time by dividing the total queue time by the unit of work value. While the detailed wait event listing is not shown, even by looking at the top four wait events shown in Figure 9-15, we can infer these account for 90% or more of all the non-idle wait time. For the necessary level of precision, I simply added the wait times for the top four wait events. Their combined wait time is 1,867 seconds during the sample interval. Here is the queue time math:

Since this system is undergoing an IO bottleneck, computing the IO utilization will not add much value and may actually cause more unimportant questions to be asked (creating unnecessary distractions).