Date: Wed, 20 Nov 1996 22:46:28 -0800 (PST) From: brian@mediacity.com To: freebsd-questions@freebsd.org Subject: Hayes ESP and interrupt-level buffer overflows Message-ID: <19961121064628.9446.qmail@mediacity.com>
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I have a Hayes ESP card hooked to as Motorola BSPro running at 230400.
I've got the Hayes ESP board set to:
Enhanced
4x mulitplier (I use 57600 baud within iijppp)
hardware rts/cts
8 bit interface
(I've run with the FIFO enabled and disabled and get the same behavior)
For the most part things work, but when I ftp stuff, I get
sio2: X more interrupt-level buffer overflows (total xxx),
where X is 3 to 32, and my throughput drops off. Sometimes I can
do 100K xfers and get around 11.2KBs, which would seem around the
limit cuz I have to run 2x56kbps B channels where I live.
However, more often than not I get the sio overflow messages and
the performance drops to between 2 and 6 KBs.
The boot reports:
sio2 at 0x3e8-0x3ef irq 5 on isa
sio2: type 16550A : ESP
and I have the config port set to 0x140.
The machine is a P5-90, running -current.
Have I misconfigured something? Is anyone out there having better luck
than I?
Thanks,
--
Brian Litzinger Powered by FreeBSD
<brian@mediacity.com> http[s]://www.mpress.com
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