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Date:      Tue, 6 May 1997 23:07:28 -0500 (CDT)
From:      Bruce Albrecht <bruce@zuhause.mn.org>
To:        freebsd-current@freebsd.org
Subject:   Excessive tty-level buffer overflows
Message-ID:  <199705070407.XAA14409@zuhause.mn.org>

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In a five minute period while running uucp via an external sportster
33K modem at 57.6 KB on /dev/cuaa1, I received over 123,000 tty-level
buffer overflows.  This is a dual CPU Pentium Pro Tyan ATX 1668,
running in single CPU mode.  What does this mean?  Is it a shoddy
16550 emulation?  My kernel is from Saturday, or thereabouts.

>From dmesg:
sio0 at 0x3f8-0x3ff irq 4 on isa
sio0: type 16550A
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16550A

>From my console log:
May  6 21:56:58 zuhause /kernel: sio1: 1402 more tty-level buffer overflows (total 116883)
May  6 21:56:59 zuhause /kernel: sio1: 2162 more tty-level buffer overflows (total 119045)
May  6 21:57:08 zuhause /kernel: sio1: 4435 more tty-level buffer overflows (total 123480)
May  6 21:57:13 zuhause /kernel: sio1: 142 more tty-level buffer overflows (total 123622)



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