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From: lam@awod.com (Ken Lam)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: 2.1.5-RELEASE sio silo overflows?
Date: 7 Sep 1996 02:35:20 GMT
Organization: Integrated Technical Systems
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In article <50pdha$stg@jethro.Corp.Sun.COM>, dcmyers@concord.corp.sun.com says...
>
>
>>In article <Dx9GF2.D51@cogsci.ed.ac.uk>,
>>Richard Tobin <richard@cogsci.ed.ac.uk> wrote:
>>>Indeed, I used to run with an 8250 (? or whatever the really old ones
>>>are) on a 386 and didn't get a silo overflow most days. The FreeBSD
>>>driver can handle that easily, unless something's gone wrong in 2.1.5.
>>
>>Thanks, Richard. This is what my instincts tell me, but there's always this
>>nagging doubt ("duh, maybe a 486 isn't fast enough to drive a serial port"),
>>so it's nice to have confirmation.
Heck, I've seen a 286/10 running KA9Q and PC-route doing 57600.
>This is odd. On my Pentium 100 system with 48 megs of RAM and 16550
>serial ports, I get "silo overflows" all the time while driving at
>28.8 modem at a DTE rate of 57.6 kbps. Maybe 30 or so during one
>hour of ftp'ing.
>
>Even more odd, I only really noticed this happening when I moved from
>16 megs of RAM to 48. Could I just have a flakey motherboard?
My P5-90 (32M) runs 115200/33.6 with no silo overflows. I have a
Intel MB and no problems whatsoever. What MB? Whose IO chipset?
BTW--does your boss know you're not running solaris ;) Or are you
staging a BSD revolution! :)
-k
--
---
Ken Lam lam@awod.com
Integrated Technical Systems
Systems, Networks, and Internet Solutions -- Defining Technology Today
"'Plug and Play' was only applicable to the original ATARI(tm)"