Date:	Mon, 4 Jun 2001 20:33:38 -0400
Message-Id:	<200106050033.UAA29487@envy.delorie.com>
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From:	DJ Delorie <dj AT delorie DOT com>
To:	djgpp AT delorie DOT com
CC:	awhite AT mail DOT rosecom DOT ca
In-reply-to:	<3B1C2662.A2575F0D@mail.rosecom.ca> (message from April on Mon,
	04 Jun 2001 20:22:58 -0400)
Subject:	Re: gprof question
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Errors-To:	nobody AT delorie DOT com
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> I realize that this is a very ambiguous question, but what generally
> causes these interrupts to fire?  The program runs for about 50 seconds,
> and more than 30 seconds apparently are taken up by calls to this
> interrupt.  If I can acertain what causes it to fire, I might be able to
> alter my code and reduce this significant overhead - I hope :-)

Anything that does an OS call - read, time, sbrk (used by malloc),
sometimes getkey().

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