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We have a need to FTP several large files nightly to one of our vendors. These files are 350K and up and at times take hours to FTP from our 400 to the remote server yet if we place these files on a Wintel box, they'll FTP in minutes. I'm wondering what on the AS/400 could be tweaked to improve the transmission time. Two things I've been looking at are the TCP send and receive buffer sizes which are currently set to 1,000,000 (default value is 8,192). Also I've found some jobs lingering in QSYSWRK, QTFTPxxxxx which run at priority 25. I could drop the class down to something equal to or lower than my interactive subsystem but I'm not quite sure what these jobs do and if changing their priority really would do anything.
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