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When running the Web Framework 'Aida 6.8' on the Cog VM 5.0,
I do notice that there seems to be interest in solving the "heartbeat thread"
warning.

If I just ignore the warning about the heartbeat thread priority,
small Squeak examples and the Squeak system itself seems to run fine.

However the Aida web framework seems to depend on 'scheduling' issues,
and Aida apparently works better if I modify the /etc/security/policy.conf

Or maybe it just appears to work better.

grep proc_priocntl /etc/security/policy.conf

 PRIV_DEFAULT=basic,proc_priocntl

In any case modifying the /etc/security/policy.conf gets rid of the warning.

The warning itself is however phrased in such a way that there's no indication,
that you have to modify the /etc/security/policy.conf of course.

My guess is that there's a great many choices and different options,
on how to allow a process to set its priority, on various systems.

David Stes

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