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- Path: sparky!uunet!decwrl!netcomsv!boo!uttsbbs!kevin.fong
- From: kevin.fong@uttsbbs.uucp (Kevin Fong)
- Newsgroups: comp.dcom.modems
- Subject: ZMODEM FILE TRANSFER TIME
- Message-ID: <954.48.uupcb@uttsbbs.uucp>
- Date: 26 Jul 92 02:20:00 GMT
- Distribution: world
- Organization: The Transfer Station BBS, Danville, CA - 510-837-4610/837-5591
- Reply-To: kevin.fong@uttsbbs.uucp (Kevin Fong)
- Lines: 23
-
- bsmith@access.digex.com (Barry Smith) writes:
-
- -> Is there a good program that calculates, from DOS, how long it takes
- -> to transfer a file or set of files using ZMODEM at a given baud rate?
- -> If not, does anyone have an equation or algorithm for calculating the
- -> CPS rate of a typical ZMODEM transfer, thus applicable to file size
- -> count?
-
- Barry,
-
- I'm not sure this will be exactly what you need, but you can calculate a
- transfer time from almost ANY protocol if you know the percent
- efficiency (thruput) of the protocol. I have found from my experience,
- that Zmodem is about 95 to 97% efficient on compressed files. Thus,
- assuming you are transferring at 9600 baud:
-
- (filesize/(960*0.95)) / 60 would give you an approximate time in
- minutes. When you add data compression into the picture, it gets a lot
- more complicated. If this is too basic, then ignore me (as most people
- do <grin>). Otherwise, I hope this helped.
-
- Kevin.
-
-