Date: Wed, 14 Aug 1996 14:11:22 +1200 From: C.R.Harding@massey.ac.nz (Craig Harding) To: freebsd-hackers@freebsd.org Subject: Re: sio issues (silo overflows on a pentium, locked in ttywait, etc...) Message-ID: <199608140213.TAA27489@freefall.freebsd.org>
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Thomas David Rivers <ponds!rivers@dg-rtp.dg.com> writes:
>Seems to me a Pentium 75 should be able to keep up with 19200, and
>hopefully be able to do much better... am I the only one tripping
>over these sio issues? Is there some other magic to setting rts/cts
>that I don't know about? Is there any hope my 386dx with 16550As will
>be able to handle anything higher than 19200 without locking up?
As a data point: I'm running 2.0.5-RELEASE on a 486SX25 with two serial
ports containing real 16550As. Both ports are locked at 57600 and users
happily dialin and use one line interactively (on a 14k4 modem) while the
other line on the 28k8 modem gets 3400cps receiving approx. 80MB of
compressed news per day via Taylor UUCP. No silo overflows.
I think the previous message relating to custom single-chip emulation of a
16550A may explain your problems.
-- C.
("yes virginia, some of us are
still only connected to the
Net via UUCP").
--
Craig Harding Editor, Massey University Television Production Centre
"I don't know about God, I just think we're handmade" - Polly
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