On Mon, 8 Jun 1998, Stephen R Bowers wrote:
> I have noticed a similar problem with the diald / ISDN setup we have here.
> I have a P90 16Mb with an external USR Courier I configured to run at
> 64kbps. Connections go through OK but quite often (not always) and
> especially using ftp on that machine I'll get a fast transfer rate (7-8
> k/s) which then drops down to about 3.6k/s and stays fairly constant. I'm
> dialling into Demon and getting this response on the test files on their
> local ftp server so I don't see that there should be much network lag
> involved.
Interesting. Back before I discovered ethernet I used to use a null-modem
cable and PPP to network a Win95 box to my Linux server. Both machines'
serial ports were 16550s locked at 115200 and I would see the gradual
slow-down in transfer performance just like you guys are seeing with your
ISDN setup. File transfers would start out flying and gradually slow down
to around 4K/sec. I figured it was something on the Win95 side doing it.
But now I'm not so sure since you guys are having the same problem. Maybe
it's a problem with the Linux serial drivers or something we're not doing
right with setserial?
Dave
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Dave Laplander
Systems Programmer Northern Arizona University
[EMAIL PROTECTED]
Phone: (520) 523-8845
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