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From: drs@bnlux1.bnl.gov (David R. Stampf)
Newsgroups: comp.unix.wizards
Subject: Signals and context switches
Keywords: EDIT DELETE LINES
Message-ID: <1991Jun16.010626.28257@bnlux1.bnl.gov>
Date: 16 Jun 91 01:06:26 GMT
Organization: Brookhaven National Laboratory, Upton, NY 11973
Lines: 22


	I just wrote two short programs.

	program 1 sends a SIGUSR1 signal to program 2, then waits to
	receive a SIGUSR1 signal from program 2. It repeats this 100
	times.

	program 2 just catches SIGUSR1 signals from program 1 and sends
	a SIGUSR1 signal back.

	What surprises me is that it takes 70 seconds to send the 100
	signals back and forth! 

	Is it possible to get better timing on this? I guess what I'd
	like to do is to force a context switch when I send the signal
	and get much better "turn" around.

	Any help is appreciated.

	< dave stampf