Sender:	fabrice AT asim DOT lip6 DOT fr
Message-ID:	<345725AC.2781E494@trash.lip6.fr>
Date:	Wed, 29 Oct 1997 13:01:48 +0100
From:	Fabrice ILPONSE <fabrice AT asim DOT lip6 DOT fr>
MIME-Version:	1.0
To:	djgpp news group <djgpp AT delorie DOT com>
Subject:	DJGPP SLOW ?

Hi!

	After having compared to code. First in BC 3.1 under protected mode
(with my PM engine) and the ohter under djgpp. djgpp appears to be
100%-200% slower ! :|

So i am searching for the reason of this speed waste.

I've had a look at the generated code, it seems to be at all good!
So, due to my DPMI knowledge, i wonder if the go32 header of the
executables is fast.

I know that djgpp lib contains a high resolution timer routine. For each
tick i suppose that both DOS and DPMI tick handler are called. That
means at each tick a PM to REAL or REAL to PM switch! :0

Can that be a reason for the djgpp waste of time?


 
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	+-+-+	Fabrice ILPONSE
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