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Date: Tue, 22 Aug 2006 08:07:17 -0400
From: "Jim Skon" <Jim.Skon@mvnu.edu>
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Subject: Problem with high bandwidth callouts
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Hello,

I have been developing a modification to the 802.11 driver to support a
version of PCF (polling mode).  The AP part of this solution depends on
several active callouts to time the operation of the protocol.  The
problem I am having is that after several hours of stress testing
(pushing the system at maximum bandwidth), the system appears to start
losing set callouts.  The callouts are still active, and past due, but
are never called.

I have already done similar implementations in the netbsd and linux
environments, and have never had such a problem.

Note that I am setting callouts (only 3) at a rate in the 100's per
second, so a lot is going on.

Has anyone ever had such a problem?

Thanks!
Jim Skon
Professor of Computer Science
Mount Vernon Nazarene University

James Skon, Ph.D.
Computer Science Department Chair
Professor of Computer Science     (740) 392-6868 x 3224
Mount Vernon Nazarene University  EMAIL: skon@mvnu.edu
www.mvnu.edu