I/O wait is 93.6% of the elapsed time
Avg. Synch I/O is .0206
Here again, the application is severely hurt by poor buffer pool and dasd performance. Simply dividing the Synch I/O wait time by the number of I/Os gives you the average. Optimally, this should be tracked for every plan in your system, and also tracked in multiple important performance periods – such as Am peak, PM peak, etc.