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From: dbert@churchy.gnu.ai.mit.edu (Douglas Siebert)
Newsgroups: comp.sys.mac.misc
Subject: Re: Speed Increase in Background?  How did that happen?
Message-ID: <1991Apr7.214847.942@mintaka.lcs.mit.edu>
Date: 7 Apr 91 21:48:47 GMT
References: <040791.170833BRBOYER@MTUS5.CTS.MTU.EDU>
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In article <040791.170833BRBOYER@MTUS5.CTS.MTU.EDU> 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...
>
I'm no Mac guru, and you don't mention which program is involved here, but I
will bet that it is one of two things:

1)  The program has a lot of screen updating to do that it doesn't have to
    while run in the background, or...

2)  You are running the program on a Mac si or ci using the built-in video
    circuitry (and a lot of colors also, I'd guess)  If the program while in
    the foreground normally resides in the area also used for the bitmap, you
    will notice it running much slower than when it is in the background (and
    presumably another program has been started before it and is occupying the
    bitmap area, thereby making *that* program run slower.

3)  Hope this helps.


--
Doug Siebert                    |                dbert@gnu.ai.mit.edu
MBA Student (2nd year)          |  "All opinions expressed herein are obviously
(starting MS in CS this fall?)  |   superior to yours or you wouldn't have need
The University of Iowa          |   to be reading this, now would you?"  :-)