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- Path: news.gate.net!not-for-mail
- From: dhaire@gate.net (doug haire)
- Newsgroups: comp.dcom.modems
- Subject: Re: faster than 28.8
- Date: 7 Feb 1996 12:11:32 -0500
- Organization: CyberGate, Inc.
- Message-ID: <4famg4$1nai@seminole.gate.net>
- References: <sumner-2001961038000001@sumner.tiac.net> <4ds0fp$4ap4@news-s01.ny.us.ibm.net> <AD29910A96685C7229@asd-stat13-153.dial.xs4all.nl> <bgrubb-2301960739100001@10.0.2.15> <4e3lbi$r3m@brachio.zrz.TU-Berlin.DE> <eric-2601960120540001@sobt.accessorl.n
- NNTP-Posting-Host: seminole.gate.net
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-
- <4f4bno$1l8k@hopi.gate.net> <4f6ei8$68v@news.rain.org>:
-
- John White (jwhite1@rain.org) wrote:
- : In article <4f4bno$1l8k@hopi.gate.net>, dhaire@gate.net (doug haire)
- : <4f1qi8$1pjo@hopi.gate.net> <eric-0402961939540001@sobt.accessorl.net> wrote:
- : >Eric Shaw (eric@accessorl.net) wrote:
- : >: In article <4f1qi8$1pjo@hopi.gate.net>, dhaire@gate.net (doug haire) wrote:
- : >:
- : >: >et> <DM0A30.1x@giskard.demon.co.uk>
- : >: <eric-0102960011580001@sobt.accessorl.net> <DM429x.w4@giskard.demon.co.uk>
- : >: <eric-0302960154340001@sobt.accessorl.net>:
- : >: >Distribution:
- : >: >
- : >: >
- : >: >Let's see the data. I have asked for this before and I am asking again.
- : >: >This is totally bogus.
- : >:
- : >: I have reconnected the Couriers, and they were a little quicker this time
- : >: with my test file, this time between 7K and 8K/s, still far from 11K/s.
- : >: Perhaps the transfer was slower before due to different ROM revisions or
- : >: something. These two both have supervisor dates of 7/5/95.
- : >
- : >Perhaps something else entirely is going on.
- : >
- : >: Here is the data:
- : >:
- : >: Date Time Prot Speed Size Secs Transfer Rate
- : >: 2/4/96 5:11 PM RYg 115200 2359350 304 7747 67% Courier to
- : >: Courier blank.bmp
- : >: 2/4/96 5:15 PM RZ 115200 2359350 329 7171 62% Courier to
- : >: Courier blank.bmp
- : >: 2/4/96 5:20 PM RYg 115200 2359350 211 11140 96% Supra to
- : >: Supra blank.bmp
- : >: 2/4/96 5:24 PM RZ 115200 2359350 228 10352 90% Supra to
- : >: Supra blank.bmp
- : >: 2/4/96 5:29 PM RYg 115220 2359350 232 10150 88% Supra to
- : >: Supra blank.bmp
- : >: the last transfer is locked at 14.4K
- : >I notice the "PM SZ", am I correct in that this is OS/2 to OS/2 machine?
- : >Am I also correct in presuming that the host is running multiple tasks or
- : >logins at the time of these tests? Have you factored in the cpu overhead
- : >and the effect this might have on your tests? My tests were run on 2 USR's
- : >connected between 2 PC's running DOS 5.0. One machine was running Desqview
- : >and had 2 nodes open with a user on the other node.
- : >
- : >Since others have shown the same results as I have shown you, I am
- : >mystified by your apparent problems here. Perhaps after I get the test
- : >file you used that got such a poor rate, I will be able to see some
- : >other reason for poor rates.
- : >
- : >I will also run the Supra against these to see what I get with that.
- :
- : Looks like test results vary depending on what the test file is. So much for
- : presenting data. Why not try common files that a typical user would be
- : downloading etc. Seems a lot more practical than using special files from
- : modem manufacturers.
-
- No, they don't. They will, when you see my results, show that there is
- something else going on. My preliminary tests using his BLANK.BMP file
- on a Courier to Courier at 31200, 28800, and 19200 connect speeds show the
- only limitation to be the 115200 port rate setting. I will post the
- results later this afternoon after I run the tests on repeats using
- Courier to Courier, Supra to Courier, and Supra to Supra (this last will
- be less reliable since I have to call across town to get to a 2nd Supra).
-
- The BLANK.BMP file does indeed compress down to 2.3k from 2.3M using
- pkzip which is about a 1000/1 ratio. Since that kind of compression would
- be impossible to get on a modem, the compression attained should show the
- limits of V.42bis compression.
-
-
- --
- "Things are more like they are now than they ever were before."
- [Dwight D. Eisenhower]
-