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Date:      Sun, 13 Jun 2004 07:11:06 +1000
From:      Peter Jeremy <PeterJeremy@optushome.com.au>
To:        Ian FREISLICH <if@hetzner.co.za>
Cc:        current@freebsd.org
Subject:   Re: Interrupt storm detection
Message-ID:  <20040612211105.GK1596@cirb503493.alcatel.com.au>
In-Reply-To: <E1BYmbX-000Ixx-00@hetzner.co.za>
References:  <20040611213707.B13626@gamplex.bde.org> <E1BYmbX-000Ixx-00@hetzner.co.za>

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On Fri, 2004-Jun-11 16:01:59 +0200, Ian FREISLICH wrote:
>> On Fri, 11 Jun 2004, Ian FREISLICH wrote:
>> 
>> > I have a problem printing.  The data rate through my parallel port
>> > to my printer makes the kernel think that lpt0 is storming at between
>> > 40k-49k irqs per second.  Is there a way to tell the kernel to
>Does a PII-266 constitute a slightly slower machine?

I'm amazed you can get to >40K irqs/sec on a PII-266.

Have you tried using lptcontrol(8) polling or extended mode?

Your other option is to offload the interrupts - either get a network
interface module for your printer or dedicate an old clunker as a
print server.
-- 
Peter Jeremy



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