Subject: Re: CG6 and serial port support questions
To: None <>
From: Johnathan Vail <>
List: port-sun3
Date: 03/05/1996 23:27:24
   X-UIDL: 826085620.014
   From: Rick Kelly <>
   Date: Tue, 5 Mar 1996 20:04:27 -0500 (EST)
   Cc:,, port-sun3@NetBSD.ORG
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   David Gilbert said:

   >	The problem is that the chips have a 3 byte FIFO.  Those three
   >bytes are easily exhausted.  Moreover, when I'm full bore receiving
   >with ppp, the system is hit hard --- close to unusable.
   >	While I can't 'know' yet --- I don't have a Sun3 to play with
   >yet, I suspect that 19200 is good fishing for a Sun3.

   When Sun switched from 68k to sparc, the decided that ring buffers
   were a good thing as compared to clists.  Thus, a Sun 3/60 had better
   serial throughput than a sparc 1+.

   To this day, the serial driver in Solaris sucks.

That explains it.  I was about to reply and say I was running a uucp
news feed over a 28K modem on a 3/80.  But then again I did have a lot
of trouble with silo overflows.  And the poor thing is struggling
mightily at the recieving end of a T1 newfeed from Alternet.


    Graphics                "Purveyors to the Froup"