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Date: Sat, 3 Mar 2001 01:54:36 +0100
To: linux-kernel@vger.kernel.org
Subject: usleep magically reduces cpu load?
Message-ID: <20010303015436.A10798@utumno.student.utwente.nl>
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Why does this use up about 5% CPU (on my system) (pseude code of course)

while (data,size = get_data) {
	write(/dev/dsp,data,size);
}

And this only uses about 0%:

while (data,size = get_data) {
	write(/dev/dsp,data,size);
	usleep(1);
}

I've also tried replacing the usleep with sched_yield() but that did
nothing.

Thomas
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