Quoting DaZZa <[EMAIL PROTECTED]>:
> On Tue, 17 Sep 2002, Peter Rundle wrote:
>
> > Got a 56k modem setup with mgetty to allow dial-in (RH7.2).
> > User connects with XP, connection lists at 33.6. But the
> > performance is woeful. Maximum file transfer rate that I've
> > been able to achieve is 1.5Kbytes. Latency on a ping is
> > around 500ms. Changed modems at the Linux end, no difference.
> > Serial port speed is set to 115200 bps, /var/log/messages
> > doesn't report anything of note, where would I look to see
> > the ratio of lost/retransmitted packets?
> >
> > Probably a Telstra poor line quality problem, but I'd like to
> > see the retransmission ratio if possible.
> >
> > Any other hints / tips welcome.
>
> Have you checked the UART types?
>
> Especially if the Linux machine is an older type - you may be running
> some
> older 16450 UART's instead of 16550AFN {or similar} UART's.
>
> Most modern chipsets emulate them, but some don't.
>
And another tip that springs to mind, lower the port speed on the serial port
to 57600 instead of 115200, since you say its a dialin modem, its never going
to get 56k connects, nor need the port speed of 115200. Plus As the previous
poster sent, it could cause problems on some emulated chips. So lower it down
and try it. You might it performs a little better or lots better.
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