The page size is the
amount of data that can be transferred from a single input/output
operation to one buffer. The page size is a permanent attribute of
the data set and is used when the data set is processed.
A larger page size can
improve execution time by reducing the number of times SAS has to
read from or write to the storage medium. However, the improvement
in execution time comes at the expense of increased memory consumption.
To change the page size,
use a DATA step to copy the data set and either specify a new page
or use the SAS default.
Note: If you use the COPY procedure
to copy a data set to another library that is allocated with a different
engine, the specified page size of the data set is not retained.
Operating Environment Information: The
default value for BUFSIZE= is determined by your operating environment
and is set to optimize sequential access. To improve performance for
direct (random) access, you should change the value for BUFSIZE=.
For the default setting and possible settings for direct access, see
the BUFSIZE= system option in the SAS documentation for your operating
environment.
Operating Environment Information: The
syntax that is shown here applies to the OPTIONS statement. In the
command line or in a configuration file, the syntax is specific to
your operating environment. For details, see the SAS documentation
for your operating environment.