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- Path: sparky!uunet!ferkel.ucsb.edu!taco!gatech!rutgers!spcvxb!hsh!lee
- From: lee@hsh.com (Lee Havemann)
- Newsgroups: comp.dcom.modems
- Subject: Re: NeXT/Supra modem performance question
- Message-ID: <1992Nov9.161208.202@hsh.com>
- Date: 9 Nov 92 20:12:08 GMT
- References: <lfamnpINN30q@ai.cs.utexas.edu> <1992Nov4.135519.1963@blaze.cs.jhu.edu>
- <1992Nov7.180909.9732@augustana.ab.ca> <1992Nov9.072120.17438@blaze.cs.jhu.edu>
- Organization: HSH Associates
- Lines: 28
-
- In article <1992Nov9.072120.17438@blaze.cs.jhu.edu>, swiet@syzygy.cs.jhu.edu (Alexander Swietlicki) writes:
- > Set win 7 caused packet length to drop from the max of 9024 to
- > 1289. This caused throughput to drop even more. On a certain file, it
- > was about 900cps at a packet length of 9024, and about 600cps with set
- > win 7. With sz, it was about 1500cps. (v.32bis/v.42bis)
- > All I know is that with zmodem, the RD light on my modem is on
- > continuously until the end of the file or an error. With xmodem and
- > kermit, every so often (depending on packet length), the RD light goes
- > off, and the SD light goes on briefly. This "turn-around" is what's
- > killing the throughput. If sliding-windows streams the transfer as sz
- > does, then how do you enable it? Because set win 7 didn't for me. It
- > just shortened the time between the (agonizingly slow) pauses.
- > I'm running C-Kermit 5A-170 locally, and 4E-070 is installed on
- > the remote machine. Are these versions too outdated?
- >
- > Alex
-
- We have found that a set window 3, set block 2 give us the best
- transmission speed. It as almost as fast as zmodem.
- (We use 5A(185) BETA-7, so you might want to get a newer version :-)
-
-
- --
-
- Lee Havemann, Sys_op HSH Associates (201) 838-3330
- Internet: lee@hsh.com Compuserve: 70410,3507 AOL: HSH Assoc
- "Any opinions expressed are not necessarily those of anyone else,
- including myself."
-