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From: rwb@vi.ri.cmu.edu (Bob Berger)
Newsgroups: comp.sys.next
Subject: MACH/DSP problem
Keywords: memory leak?
Message-ID: <10495@pt.cs.cmu.edu>
Date: 18 Sep 90 06:05:42 GMT
Organization: Carnegie-Mellon University, CS/RI
Lines: 16


I have an application which trades lots of small data packets with
the DSP. It currently works fine using memory mapped DSP access, but
I would like to try message based access since I'm told memory mapped
will not be supported in the future.

The application trades a few hundred messages back and forth with the
DSP, and then snddriver_dsp_read() gets a KERN_RESOURCE_SHORTAGE error,
and the system promptly reboots with a  'zone "messages" empty' error.

This sounds to me like the OS has a core leak. Any suggestions (besides
giving up on MACH and sticking with the memory mapped mode)?

Please reply via email.

rwb@vi.ri.cmu.edu