Making I/O operations faster

You can use several methods to reduce the time required to perform individual I/O operations.

Distributing data sets efficiently
Avoid I/O contention and increase throughput through the I/O subsystem by placing frequently used data sets on fast disk devices and by distributing I/O activity.
Creating additional work file table spaces to reduce contention
You can minimize I/O contention in certain situations by creating additional work file table spaces.
Improving space allocation and pre-formatting
You can improve the performance of applications that use heavy insert processing by controlling how space is allocated and pre-formatted.
Avoiding excessively small extents
Data set extent size affects performance because excessively small extents can degrade performance during a sequential database scan.

Parent topic: Managing I/O processing, response time, and throughput

Related concepts

Parallel processing