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PERFORM.DOC
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1989-08-01
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Notes on Execution of PERFORM.EXE
PERFORM.EXE is a useful utility for determining data
throughput in a given system. This system can be a stand
alone PC, a Novell NetWare local area network, or any other
local area network.
The files that are created by PERFORM and subsequently
written to and read from are simple DOS files. Standard DOS
functions are used to create, open, read from, and write to the
files.
PERFORM is executed from the DOS command line prompt with
no parameter list. PERFORM will automatically create and
open a file in the default directory. When running PERFORM
on multiple workstations under NetWare, PERFORM will create
a file with a unique name for each workstation automatically.
Thus, several workstations may run PERFORM in the same
directory if desired.
When executed, PERFORM displays a screen with several
partitions. These partitions are:
Parameters. Four parameters that are user definable.
Results. Contains the results of the test as it runs and
when it is complete.
Status. Indicates current status of program execution.
The parameters that are definable by the user are quite simple.
The first parameter determines whether reads or writes will be
performed. Of course, a write must be done to the file before
you can read from it.
The second parameter determines whether the reads or writes
will be overlayed or sequential. Overlayed I/O indicates that
the read or write operation will occur on the same record over
and over. Sequential I/O indicates that the reads and writes
will be done on consecutive records in the file.
The record size parameter is straight forward. The record
sizes can range from 1 byte to 4096 (4K) bytes. Remember
when doing read tests to first write records of the same size
as those that will be read.
The last parameter indicates the number of records to read or
write. The more iterations performed, the more accurate the
final results will be.
When the paramters have been entered, simply press the F1 key
to start the test. Use Ctrl-C to exit back to DOS.