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From: ralf+@cs.cmu.edu (Ralf Brown)
Newsgroups: comp.os.msdos.misc
Subject: Re: relative speeds of file transfer protocols wanted
Message-ID: <1991Feb20.040652.26925@cs.cmu.edu>
Date: 20 Feb 91 04:06:52 GMT
References: <1991Feb11.133727.1160@minyos.xx.rmit.oz.au> <1991Feb18.203344.1433@qualcomm.com>
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In article <1991Feb18.203344.1433@qualcomm.com> rdippold@maui.qualcomm.com (Ron Dippold) writes:
}In article <1991Feb11.133727.1160@minyos.xx.rmit.oz.au> s902114@minyos.xx.rmit.oz.au (Zen) writes:
}
}   HyperP -   300 cps   (ZIPped file)
}   Puma -     236 cps   (ZIPped file)
}   Zmodem (MT) - 234 cps
}   ZMODEM -   230 cps
}
}I should note that Puma will perform much faster if you are sending an
}uncompressed file, as it has a rudimentary packer, as does JMODEM.  The

As does Zmodem (all three do run-length encoding).  The Zmodem protocol
also allows for 12-bit LZW compression, though I don't know of anybody
implementing it.

}fastest protocol, hands down, is HyperP, it's packing is incredible, even
}with an alread ZIPped file.  Unfortunately, it has a nasty tendency to

Is that speed figure by the wall clock or using the built-in speed display?
The Zmodem in Telix is notorious for over-inflating throughput, particularly
on short files.  Also, that ZIP file you used must have had huge numbers of
tiny files, resulting in much of the file being uncompressed headers, because
not even ARJ manages to compress the typical ZIP file by more than 2-3%.


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