[erlang-questions] Subtle behaviour of Erlang scheduler
Sat May 26 09:05:30 CEST 2007
Ulf Wiger (TN/EAB) wrote:
> BTW, where is it documented that 'high' and 'max'
> are strict priorities, and does this still hold
> true in an SMP environment (i.e. can one high
> priority process starve all normal priority
Indeed, this could be reasonable, IMHO, according to a "standard"
> The code server is a pretty heavy process to
> run on a blocking priority. One way to address
> the problem would be to make all priorities
> non-strict, right?
Or to think about a priority inheritance/ceiling system. If we think
that a gen_server is something like an object and that a gen_server:call
is something like a method call, it is reasonable to assume that a
process receiving a message handles it running with the same priority of
the sending process. That is, not only the receiving process uses the
reductions left by the sending proces, but also its priority. This
should definitively solve the problem by means of a state-of-art approach.
All the best,
Eng. Corrado Santoro, Ph.D.
University of Catania - ITALY - Engineering Faculty
Tel: +39 095 7382380 VoIP: sip:7035@REDACTED
Personal Home Page: http://www.diit.unict.it/users/csanto
NUXI Home Page: http://nuxi.diit.unict.it
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