“Avg Disk I/Os Returned” reports the average number of disk I/Os returned over all Adaptive Server engine checks combined.
Increasing the amount of time that Adaptive Server engines wait between checks may result in better throughput because Adaptive Server engines can spend more time processing if they spend less time checking for I/O. However, you should verify this for your environment. Use the sp_configure parameter i/o polling process count to increase the length of the checking loop.
See the System Administration Guide.
