From:	Charles Sandmann <sandmann AT clio DOT rice DOT edu>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: exe pgm execution speed under various versions of windows
Date:	Sun, 24 Aug 2003 20:33:02 CDT
Organization:	Rice University, Houston, TX
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To:	djgpp AT delorie DOT com
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>I have been modifying a C program via RHIDE 1.4.9 that was originally
>compiled with Borland C and the  Pharlap Dos extender. My primary work is
>done using W98 on a 500Mhz PC and the exe file runs at a reasonable speed
>under W98.  However, when put on a similar speed PC using Windows Me, the
>execution rate drops dramatically compared with the original exe, and the
>performance drops even more under Windows 2000 Professional.

You would need to be much more specific about what you are doing
which causes the performance drop.

Many images run faster under DJGPP and Windows 2000 than under Win98.

>Presumably, the marked change in performance between versions of Windows
>reflects the fact that the djgpp compiled exe is not using a DOS extender.

That's a bad presumption.  The way DJGPP does it should be faster than
if done with an extender in almost all cases.

>What needs to be done to overcome this problem ?

A small example of something which is slower - so someone can suggest
a better way?

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