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Date: Sat, 8 Feb 1997 09:23:11 +1100
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199702072223.JAA19401@godzilla.zeta.org.au>
To: freebsd-current@freebsd.org, Shimon@i-Connect.Net
Subject: Re: Pppd Drops Under Heavy Load
Sender: owner-current@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk

>a.  A USR Sportster 33.6 and a on the MB 16550-like UART running at
>    115,200 baud. (ccua1)
>
>b.  Motorola BitSRFR-Pro ISDN on a 16550 card, running at 230,400 (frequency
>    doubler; it appears 115,200 to the kernel). (ccua2)
>
>Symptoms:  As the Subject says.  After a while, under heavy load, the line
>silently drops.  Rarely, I get in the log:

Some buffers are scaled for 115200 bps max.  Double RS_IBUFSIZE and TTYHOG
for 230400 bps (the latter is optional and best not done if you only use
kernel ppp).  Also, perhaps user mode ppp depends on 115200 really being
115200.

Bruce