From owner-freebsd-current  Thu Aug  1 09:09:22 1996
Return-Path: owner-current
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.5/8.7.3) id JAA22650
          for current-outgoing; Thu, 1 Aug 1996 09:09:22 -0700 (PDT)
Received: from crh.cl.msu.edu (crh.cl.msu.edu [35.8.1.24])
          by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id JAA22642
          for <freebsd-current@freebsd.org>; Thu, 1 Aug 1996 09:09:14 -0700 (PDT)
Received: (from henrich@localhost) by crh.cl.msu.edu (8.7.5/8.7.3) id MAA03941 for freebsd-current@freebsd.org; Thu, 1 Aug 1996 12:09:13 -0400 (EDT)
From: Charles Henrich <henrich@crh.cl.msu.edu>
Message-Id: <199608011609.MAA03941@crh.cl.msu.edu>
Subject: XFqcam on 2.2 hurts much more than on 2.1
To: freebsd-current@freebsd.org
Date: Thu, 1 Aug 1996 12:09:13 -0400 (EDT)
X-Mailer: ELM [version 2.4ME+ PL22 (25)]
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: owner-current@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk

I have been running xfqcam which polls the lpt port for images in a tight loop
(I think), under 2.1 this process ran happily snarfing up all spare cycles, but
having virtually zero impact on any other system resources, including
interactive response.  Under 2.2 running this same program wreaks havoc on
virtually everything else running, slowing performance waaayyy down.  Anyone
know why this might be?

-Crh

       Charles Henrich     Michigan State University     henrich@msu.edu

                         http://pilot.msu.edu/~henrich