[ECOS] FreeBSD-stack ping is unresponsive upon low priority thread spending 100% CPU

[Øyvind Harboe]

The low priority thread is holding a mutex while it's eating all the CPU.

When I remove this mutex eating all the CPU no longer blocks ping.

This mutex is essentially used to single thread a web server thread
(athttpd) and the application so it is held for *long* periods of time.
There is a shared tcl interpreter between the ahttpd web server and
application.

I can easily believe that priority inversion code is messing things up here,
but I'll have to read up some more to figure out a better way to
achieve the single threading.




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Øyvind Harboe
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