Re: [hylafax-users] Serial latency

["Tim Allen" <timallen@dcallen.co.uk>]

>
> I'm running Hylafax 4.1rc2 under RH 7.1 on a 486 100MHz (16550AF UARTS)
with
> a Multitech MT1932ZDXK Class 2 modem, RTSCTS handshaking (cabling
> double-checked) and 38400 Baud between PC and modem.
>
> Clearly the machine isn't exactly cutting edge and once the machine comes
> under load when receiving a fax I start losing chunks of the incoming
page.
> Can anyone advise on the likely success of any of the following ideas:
>
> Drop the modem comms speed to 19200 or 9600 Baud.
>
> Run setserial at startup with the low_latency option.
>
> Modify the UART fifo interrupt threshold. At some point during the
> installation I recall a message stating this was set to 8 but I don't know
> what to do to change this.
>

Eventually tried an internal no-name 56k Class 1 modem and everything is
fine. Maybe the comms ports were sick or maybe the internal card has a
larger FIFO?

Tim Allen




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