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ETU400 User Guide 011603
J-2
ETU THROUGHPUT CONSIDERATIONS
This is a guide to answer questions regarding throughput with ETU 400.
The latest revision of ETU 400 is 5.02 for ETU 400 CISC and 5.04.1 for
ETU 400 RISC. Use the ETUVER command to find what version you have.
QUESTION:
What kind of throughput can I expect?
ANSWER:
This would depend on several factors:
The connection to the host, twinax or TCP/IP is the first factor.
If the file requires translation from EBCDIC to ASCII it will add processing time.
If you are transferring a database file using a DDU or F & I specification it will take longer.
If you are running SSP it will slow it down.
Your AS400 CPU speed and OS/400 version will make a difference.
If there is a lot of other processing taking place on your host it will slow it down.
If the job is submitted to a batch queue, it will be slower.
If print jobs being sent to the same twinax port that the ES/PCI is on, it will slow things down.
If a network is congested, it could slow a transfer down.
Using TCP/IP, 750K per minute. Figure about 15 Megabytes per hour or 5000 cps.
For just a transfer, 30 pages, with 1953 records at 110 bytes each, for a total of 162694 bytes
transfers in 20 seconds. This is about 8134 CPS.
QUESTION:
What can I do to improve the throughput?
ANSWER:
Move to a faster connection. Perform the transfer during times when the system and or network are
not so busy.
Specify the exact form length and/or record length.