Important REAL-TIME note

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Allan Schaffer (aschaffe)
Mon, 9 Jan 1995 16:47:38 -0800


Performer users,

Below is a kernel tune to assist your real-time operations.
I'll add this to the FAQ list as well.

Caveat: Be sure -not- to specify CPU 0, as you will want it
to be available for necessary interrupts.

Allan

-------------

There is a new real-time kernel directive for Onyx/Challenge
processors for directing system interrupts away from real-time
processors.

In the file

        /var/sysgen/system/irix.sm

Search for NOINTR and below the comment explaining NOINTR, add the
line

        NOINTR: 1 2 3 4 .....

where you list the CPUs that you intend to do real-time processing on
and then reboot.

This can be done on 5.2+ Onyx/Challenge systems and is very important
for real-time behavior. This wasn't covered in the base IRIX5
documentation.

-- 
Allan Schaffer
Silicon Graphics
aschaffe++at++sgi.com
http://reality.sgi.com/employees/aschaffe

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