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# frozen_string_literal: true
module Gitlab
module Cluster
class PumaWorkerKillerInitializer
def self.start(puma_options, puma_per_worker_max_memory_mb: 650)
require 'puma_worker_killer'
PumaWorkerKiller.config do |config|
# Note! ram is expressed in megabytes (whereas GITLAB_UNICORN_MEMORY_MAX is in bytes)
# Importantly RAM is for _all_workers (ie, the cluster),
# not each worker as is the case with GITLAB_UNICORN_MEMORY_MAX
worker_count = puma_options[:workers] || 1
config.ram = worker_count * puma_per_worker_max_memory_mb
config.frequency = 20 # seconds
# We just want to limit to a fixed maximum, unrelated to the total amount
# of available RAM.
config.percent_usage = 0.98
# Ideally we'll never hit the maximum amount of memory. If so the worker
# is restarted already, thus periodically restarting workers shouldn't be
# needed.
config.rolling_restart_frequency = false
end
PumaWorkerKiller.start
end
end
end
end
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