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000097_news@columbia.edu_Sun Aug 4 01:39:54 1995.msg
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From: scott048@gold.tc.umn.edu (Jim Scott)
Newsgroups: comp.protocols.kermit.misc
Subject: Packet length and file transfers
Date: 3 Aug 1995 20:39:54 -0500
Organization: University of Minnesota
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I've finally managed to get kermit to transfer files reliably and have
moved on to the next stage -- improving transfer performance. I download
lots of .zip files and have played with buffer sizes, packet lengths and
window slots.
I've got my window slots set to 31, CTS flow control, 57600 speed with a
14.4 modem using compression and error correction. My control prefixing
is limited to three characters.
I average about 1,550 file characters/second when I use packet lengths
beteween 200-300 characters. When I increase that to 1000+, my transfer
rates fall to 1,200 characters/second or worse. Should I be happy with
my 1.5, or is there a way to improve this even more using longer-packets?
--
Jim Scott
"I had taught myself that a human being might as well look for diamond
tiaras in the gutter as for rewards and punishments that were fair."
Kurt Vonnegut, from "Mother Night."