1b6c0a7272
This change adds a new fact that can be used as the default values for any worker configuration. When used this fact will reduce the number of default workers configured for services. Previously we were using $::processorcount which could lead to excessive memory consumption or connection limits being execeeded when services were deployed on baremetal with large number of processors. The os_workers fact uses the larger of two following values, '2' or '# processors / 4' but will not exceed '8'. Change-Id: Ia588817fde9203a134bc9eaad9a5bd5453d7639a
21 lines
714 B
Ruby
21 lines
714 B
Ruby
#
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# We've found that using $::processorcount for workers/threads can lead to
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# unexpected memory or process counts for people deploying on baremetal or
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# if they have large number of cpus. This fact allows us to tweak the formula
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# used to determine number of workers in a single place but use it across all
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# modules.
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#
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# The value for os_workers is max between '(<# processors> / 4)' and '2' with
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# a cap of 8.
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#
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# This fact can be overloaded by an external fact from /etc/factor/facts.d if
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# a user would like to provide their own default value.
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#
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Facter.add(:os_workers) do
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has_weight 100
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setcode do
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processors = Factor.value('processorcount')
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[ [ (processors.to_i / 4), 2 ].max, 8 ].min
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end
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end
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