Xref: utzoo comp.unix.i386:5643 comp.sys.att:9738
Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!att!cbnewsl!rubin
From: rubin@cbnewsl.att.com (Mike Rubin)
Newsgroups: comp.unix.i386,comp.sys.att
Subject: Re: Why is /dev/lp slow?
Message-ID: <1990Jun1.184946.17448@cbnewsl.att.com>
Date: 1 Jun 90 18:49:46 GMT
References: <110@westmark.UU.NET>
Distribution: usa
Organization: AT&T Bell Labs, Summit, NJ
Lines: 12

In article <110@westmark.UU.NET> dave@westmark.UU.NET (Dave Levenson) writes:
>Just upgraded from AT&T SysV/386r3.2 to SysV/386r3.2.2.  Nothing in
>the hardware has changed....
>Since upgrading to 3.2.2, the printer has slowed to about 30 cps or so.

Any other board in the system (whether it has a Unix driver installed
or not) using interrupt 7, will cause this behavior -- it will eat
some of the interrupts that come from the lp port.

Make sure you have no extraneous boards in your box.

--Mike Rubin <mike@attunix.att.com>