Newsgroups: comp.sys.mac.programmer
Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!batcomputer!cornell!wayner
From: wayner@CS.Cornell.EDU (Peter Wayner)
Subject: Re: Speed Increase in Background? How did that happen?
Message-ID: <1991Apr8.162052.11461@cs.cornell.edu>
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Organization: Cornell Univ. CS Dept, Ithaca NY 14853
References: <040791.170656BRBOYER@MTUS5.CTS.MTU.EDU>
Date: Mon, 8 Apr 1991 16:20:52 GMT
Lines: 33

BRBOYER@MTUS5.CTS.MTU.EDU (Rucell) writes:


>   I have a question for all of you Macintosh Guru's.  What on Earth could
>make a program run faster in the background than it does in the fore-ground
>(while Multi-Finder is activated)?  When I first noticed the severe speed
>differences, I almost freaked out.  Could someone explain this to me?  Is
>there a way to get my program to run the same speed (or even faster) while it
>is in the fore-ground?  Thanks in advance...

My guess (and it is only a guess) is that the normal program does plenty
of screen drawing. When it is in the background all of its drawing
is clipped (or masked) out. Just a guess, though, and if someone who
really understands these things could correct me, I would appreciate it.

-Peter




>   Bradley R. Boyer      ##### #   #  ###    BRBOYER@mtus5.cts.mtu.edu
>                           #   #  #  #   #   BRBOYER%MTUS5.BITNET
> |"How could it have |    # #  ###   #####
> | been me?  I wasn't|     #   #  #  #   #   Phi Kappa Theta - Michigan Chi
>Rho
> | even there!"      |   ##### #   #  ###    Michigan Technological University

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-- 
Peter Wayner   Department of Computer Science Cornell Univ. Ithaca, NY 14850
EMail:wayner@cs.cornell.edu    Office: 607-255-9202 or 255-1008
Home: 116 Oak Ave, Ithaca, NY 14850  Phone: 607-277-6678

