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Date:      Mon, 28 May 2001 01:39:29 -0700
From:      "Ted Mittelstaedt" <tedm@toybox.placo.com>
To:        "Keith Spencer" <bsd2000au@yahoo.com.au>, <freebsd-questions@FreeBSD.ORG>
Subject:   RE: oops! sio0 err <- rest of err message
Message-ID:  <003701c0e751$b5c92740$1401a8c0@tedm.placo.com>
In-Reply-To: <20010528074027.22244.qmail@web12008.mail.yahoo.com>

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I've noticed a big incidents of sio overflows on
slower CPU's commencing from FreeBSD version 3.0
I've had a number of FreeBSD 2.2.8 systems that were
involved in various serial port work that I've
upgraded over the years and that started spitting
that out.

I suspect that some change was made going from
2.2.8 to 3.0 that adversely affected the sio driver.
Maybe the time slice was changed the scheduler gives
out or some such.  Strangely, I've never seen them with PPP but I have seen
them with UUCP and other serial intensive
programs.  Since I don't use COM ports anymore for
high volume data transfer I haven't pursued it.

Ted Mittelstaedt                      tedm@toybox.placo.com
Author of:          The FreeBSD Corporate Networker's Guide
Book website:         http://www.freebsd-corp-net-guide.com


>-----Original Message-----
>From: owner-freebsd-questions@FreeBSD.ORG
>[mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of Keith Spencer
>Sent: Monday, May 28, 2001 12:40 AM
>To: freebsd-questions@FreeBSD.ORG
>Subject: oops! sio0 err <- rest of err message
>
>
>Hi sorry I forgot to give details...
>Here is Tail messages
>8< snip...........
>
>May 28 13:48:11 myrouter /kernel: sio0: 1 more silo
>overflow (total 4)
>Thanks...
>Is this an issue?
>Can I resolve it?
>Thanks Keith
>
>
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