RE: Correlating *SAVF "records" to FTP job I/O count

["Goodbar, Loyd (AFS-Water Valley)" <LGoodbar@xxxxxxxxxxxxxx>]

Could you use the MTU value from your TCP/IP setup? The MTU (maximum
transmission unit) is the maximum number of bytes in each IP packet. On
LANs, I think the value is usually 1500. I don't know what each "I/O" on an
FTP transfer is, either. I guess it is NOT the number of save file records
(you can see with the DSPSAVF command). If you use the MTU, realize it can
be a partial IP packet. (IE, save file size >> packets * MTU)

HTH,
Loyd

-----Original Message-----
From: Bale, Dan [mailto:DBale@lear.com]
Sent: Monday, May 01, 2000 12:58 PM
To: 'MIDRANGE-L@midrange.com'
Subject: Correlating *SAVF "records" to FTP job I/O count


Is there a known, constant, record-blocking factor used when transmitting a
save file from one AS/400 to another via FTP?

I am using FTP to transmit save files from plant boxes to the division box.
One I have running right now is 56MB.  The system operator is wondering how
much longer the FTP will run.  When I look at the job running FTP, it shows
the save file being transmitted as an open file (WRKJOB option 14) and shows
the I/O count at 12,417.  If I could correlate the save file's number of
records to the I/O count, I would be able to estimate the time remaining to
complete the transmission.  

RTFM?  Please point the way.

- Dan Bale


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