Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!mcsun!hp4nl!phigate!ehviea!ehvie0!hulsebos
From: hulsebos@ehvie0.tq.ine.philips.nl (rob hulsebos)
Newsgroups: comp.protocols.tcp-ip.ibmpc
Subject: Re: MAC to VAX ftp (slow problem)
Message-ID: <602@ehvie0.tq.ine.philips.nl>
Date: 12 Dec 89 15:55:54 GMT
References: <8912071317.aa12002@louie.udel.edu>
Reply-To: hulsebos@tq.ine.philips.nl (Rob Hulsebos)
Organization: Philips I&E Eindhoven
Lines: 22

In article <8912071317.aa12002@louie.udel.edu> gartley@ALDNCF.ALCOA.COM (J O GARTLEY) writes:
>About a mouth ago I was transferring data from my MAC II (using NCSA
>Telnet V2.3) to a VAX VMS system running VMS 4.7 and The Wollongong
>Group software WIN/TCP V3.2 
>
>The Vax was upgraded to VMS 5.1 and the TWG software was upgraded to 5.0
>
>Now my transfer speed is 25Kb/sec (6 times sssssllloooowwweeeerrrr) 

I do not know if it has anything to do with it, but one of my
collegues found a problem in the C-library on VMS. Although I do
not know exactly what happened, it looked like the stupid library
did a flush of all its disk-buffers whenever a single byte was written
to a file. Of course this is disastrous from a
performance-point-of-view.

It took him only a few months to figure out while all our compiles
suddenly took so long... because of the 'upgrade' to VMS 5  :-(

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Rob Hulsebos == hulsebos@tq.ine.philips.nl Tel +31-40-785723, Fax +31-40-786114
Philips I&E - Where the future is being made today!