[net.micro] speed difference between upload and download using kermit?

wei@princeton.UUCP (P Wei) (05/09/86)

I am using Kermit (v.2.26) transfering files between ibmpc and vax
(running unix 4.2bsd).  (on the vax, I use c-kermit ).
Everything works fine except that it only takes a few minutes to download
50K bytes file from vax to pc; whereas it takes *hours* to upload the
file.   (I am using a network line with 9600 baud rate. The only setting
after I invoke ms-kermit is "set parity even" and "set baud 9600".
AND the transfering is at midnight. The vax has less people to serve
at this hour than in daytime).
Can anyone shine some light on me ? What is going wrong ?
Is this an intrinsic problem with the kermit program?
Thank you in advance for your help!
HP    (wei@princeton.UUCP)

SY.FDC@CU20B.COLUMBIA.EDU (Frank da Cruz) (05/19/86)

The speed difference you observe is not the normal behavior of Kermit.
It's probably caused by the network.  Many network terminal concentrators,
statistical multiplers, and similar devices allocate much higher bandwidth
in the host-to-terminal direction than in the terminal-to-host direction
on the assumption that the data coming from the "terminal" consists only of
human keystrokes, whereas the host is capable of spewing forth vast amounts
of data in response to a short command.  Of course, when the terminal is
really a PC running a file transfer program like Kermit, this assumption is
very wrong.
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