From owner-freebsd-current Wed Mar 3 2:41:36 1999 Delivered-To: freebsd-current@freebsd.org Received: from mail-spool.is.co.za (mail-spool.is.co.za [196.4.160.4]) by hub.freebsd.org (Postfix) with ESMTP id ACEDE14DEA for ; Wed, 3 Mar 1999 02:37:42 -0800 (PST) (envelope-from geoffr@is.co.za) Received: from admin.is.co.za (admin.is.co.za [196.23.0.9]) by mail-spool.is.co.za (8.8.8/IShub#3) with ESMTP id MAA25642; Wed, 3 Mar 1999 12:37:02 +0200 Received: from isjhbex01.is.co.za (isjhbex01.is.co.za [196.26.1.16]) by admin.is.co.za (8.8.6/8.7.3/ISsubsidiary#1) with ESMTP id MAA15690; Wed, 3 Mar 1999 12:36:19 +0200 (GMT) Received: by isjhbex01.is.co.za with Internet Mail Service (5.5.2232.9) id <100PSRNH>; Wed, 3 Mar 1999 12:30:53 +0200 Message-ID: <3D5EC7D2992BD211A95600A0C9CE047F017E22E3@isjhbex01.is.co.za> From: Geoff Rehmet To: "'Leif Neland'" Cc: current@FreeBSD.ORG Subject: RE: Printing is vvveeerrryyy slow Date: Wed, 3 Mar 1999 12:30:44 +0200 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2232.9) Content-Type: text/plain; charset="iso-8859-1" Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG From what I recall, (and a very brief look at the code again), you would have to look at when lptintr() gets called. There is (I don't recall) any counter. I didn't go grovelling anywhere outside the lpt code when I was working on it. You may have to add some debug code to diagnose what is happening. Geoff. > -----Original Message----- > From: Leif Neland [mailto:leifn@neland.dk] > Sent: 03 March 1999 12:27 > To: Geoff Rehmet > Cc: current@FreeBSD.ORG > Subject: Re: Printing is vvveeerrryyy slow > > > > It's a long long time since I was working on the lpt driver. This > > kind of symptom was a common problem during its development. I > > haveen't been able to really appreciate the code for the nltp > > driver, so I also can't really see if there is a problem. > > Biggest problem when I was hacking on the lpt driver was that > > interrupts tended to get lost sometimes. I seem to recall, that > > there were some problems with slow printing that just could not > > be fixed. > > Is there a way to test if interrupts are getting serviced? A > counter of > interrupts? > > > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message