This box contains the time, in milliseconds, to use as the I/O controller overhead, and the disk seek and latency time during query optimization.
If this time is not the same for all containers in the table space, the value used should be an average of the overhead time for all containers.
To change the overhead time, use one of these methods:
Overhead is calculated using the following formula:
overhead = avg seek time in milliseconds + ( ( ( 1 / rotation speed in RPM ) * 60 * 1000 ) / 2 )
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