kern/78711: Parallel printer incredibly slow
Suporte Matik
asstec at matik.com.br
Sun Jul 3 00:48:28 GMT 2005
The following reply was made to PR kern/78711; it has been noted by GNATS.
From: Suporte Matik <asstec at matik.com.br>
To: Bruce Evans <bde at zeta.org.au>
Cc: Jason Bacon <bacon at smithers.neuro.mcw.edu>
Subject: Re: kern/78711: Parallel printer incredibly slow
Date: Sat, 12 Mar 2005 12:00:05 -0300
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On Friday 11 March 2005 23:11, Bruce Evans wrote:
> On Fri, 11 Mar 2005, Suporte Matik wrote:
> > On Friday 11 March 2005 19:42, Jason Bacon wrote:
> >>> Description:
> >>
> >> The parallel printer runs ridiculously slow. It prints
> >> normally for about 30 seconds, then prints one line every 5 or
> >> 10 minutes. ...
> >
>
> Try changing the interrupt storm threshold
> (hw.intr_storm_threshold) to something larger than the printer can
> generate. FreeBSD-5.3 has interrupt storm detection that
> misdetects the very high interrupt rates that can be caused by
> printers (combined with low quality interrupt handling in the lpt
> driver) as interrupt storms.
>
I increased it in 500er steps to 2500 (500 was default) and nothing=20
changed in printing speed but the stray irq7 events do not appear=20
anymore.=20
Hans
=2D-=20
Infomatik
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http://info.matik.com.br (18)8112.7007
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