Subject: Re: PPP performace and silo overflows
To: John C. Hayward <>
From: John F. Woods <>
List: current-users
Date: 04/20/1995 14:22:57
>    I have USRobotics 28,800 internal modems on two NetBSD-1.0 486/DX-33 
> machines.  I am using ppp to connect these machines.  Both systems use
> rtscts hardware flow control and transmit to the computer at 115200 baud
> with compression enabled.
> Any suggestions for how to prevent the silo overflows?

I markedly reduced the incidence of silo overflows on my system by editing
dev/isa/com.c to change the FIFO threshold from 8 to 4 characters.