puppet-heat/releasenotes/notes/heat-engine-workers-8ef3960...

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---
fixes:
- |
Previously the number of heat engine workers was set to $::os_service_default
which would use the default from python. Usually this means it will use
the number of processors in the system. We have found that this is not an
ideal default for large number of cpu systems. We have a provided fact
specific to heat engine named $::os_workers_heat_engine. We have changed
the default value for the heat engine works to use this fact. This
fact will cap the value at 24 but usually is the larger of
(number of procs / 2) or 4.