Date: Mon, 02 Aug 2004 13:49:53 +0200 From: Ian FREISLICH <if@hetzner.co.za> To: "Willem Jan Withagen" <wjw@withagen.nl> Cc: current@FreeBSD.ORG Subject: Re: LPT interruptstorm Message-ID: <E1BrbKD-000GdA-00@hetzner.co.za> In-Reply-To: Message from "Willem Jan Withagen" <wjw@withagen.nl> <006c01c47884$834e4ee0$471b3dd4@digiware.nl>
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"Willem Jan Withagen" wrote: > Hi, > > Must be a FAQ, but I did not find anything ... > > When wanting to print thru /dev/lpt0 the kernel now starts to complain about > interruptstorms. Something I can imagine, since printing can generate > 1000 > ints/sec. > Problem is that the current document (500k) is now printed at 100 > interrupts/sec. > > That's going to take some time.... > How do I prevent this from happening? /etc/sysctl.conf: hw.intr_storm_threshold=2000 OR /boot/device.hints: hint.ppc.0.flags="0x8" Make sure your bios is set to ecp/epp for the printer port, or the second option will fail. A couple of people around here have also suggested 'lptcontrol -e', but every time I've tried that (even with lpd stopped) I get 'lptcontrol: open: Device busy'. I'm not sure what keeps the printer port open other than lpd. Ian -- Ian Freislich
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