Resources that are required
for running a SAS program include the following: CPU time, real time,
memory, data storage space, and I/O.
Understanding Efficiency Trade-offs
It is important to understand
the trade-offs that are involved in optimizing your SAS programs.
Decreasing the use of one resource frequently increases the use of
another. There is no single best way to optimize a SAS program; it
depends on your situation.
Using SAS System Options to Track Resources
You can specify one
or more of the SAS system options STIMER, MEMRPT, FULLSTIMER, and
STATS to track and report on resource use. (In the z/OS environment,
FULLSTIMER is an alias for FULLSTATS.) The availability, usage, and
functionality of these options varies by operating environment.
Using Benchmarks to Compare Techniques
To determine which SAS
programming technique is most efficient for a particular task, you
can benchmark (measure and compare) the resource usage of each technique.
