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1988-01-06
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TESTNET.EXE
version 1.0
By SCOTT TAYLOR
228 Gold Kettle Drive
Gaithersburg,Md 20878
TESTNET this utility is intended to test the performance of Local
Area Networks. It may also be used to test stand alone PC's.
The valuable results of this test will show the total elapsed
time in seconds and total throughput in KB/sec transferred to
disk. Using a SEQUENTIAL file access method tests server disk and
caching performance. Using OVERLAID file access tests reflects
more of the network interface performance as well as local
(workstation) cache techniques. Larger record sizes are handled
more efficiently by most operating systems (especially DOS).
Using larger record sizes (4K and up) demonstrates overall
throughput. Smaller record sizes demonstrates the operating
systems ability to deal with small record blocks. A good example
would be to run this test from a workstation local C: drive. Then
run it again from that workstation but to a network drive.
Usually you will see a significant increase in performance. Also
try running the test with the VERIFY option on/off.
Here is another good example, especially for comparing different
server hardware (disk, memory, cpu). This is especially useful on
Novell networks since the server console displays performance
characteristics. To compare hard disks generate a file size,
using Testnet, that is larger than the total memory installed in
the server. Then you can compare throughput times displaied by
Testnet. This way the file size is to large to fit in cache
memory and tests raw disk I/O.
To compare CPU's (as servers) or cache memory generate a file
size, using Testnet, that is approximately 512K smaller than the
total memory installed in the server. Then set Testnet to read
the file, this will test the raw CPU & Cache memory performance.
Then you can compare the throughput displayed by Testnet. As the
test is in progress you can monitor the server console for peak
"I/O PENDING" and peak "% UTILIZATION".
MENU: The menu keys are UP and DOWN arrow keys to highlight a
menu option. Press RETURN to select a highlighted option, then
input the desired value for that option. Instructions accompany
each menu option when the RETURN key is pressed. <ESC> will exit
TESTNET to DOS.
From the main menu <F1> starts the test. <F2> sets the station
into the MULTI-STATION test mode. Press <F1> when the last
station is set into the MULTI-STATION test mode, then all
stations will begin testing. Each station will then show its
average throughput to/from the file server. All stations running
in the MULTI-STATION mode must be able to access the same root
directory.
Any questions, comments, or suggestions are welcomed !