38 lines
1.5 KiB
Ruby
38 lines
1.5 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Cluster
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class PumaWorkerKillerInitializer
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def self.start(puma_options, puma_per_worker_max_memory_mb: 850, puma_master_max_memory_mb: 550)
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require 'puma_worker_killer'
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PumaWorkerKiller.config do |config|
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# Note! ram is expressed in megabytes (whereas GITLAB_UNICORN_MEMORY_MAX is in bytes)
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# Importantly RAM is for _all_workers (ie, the cluster),
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# not each worker as is the case with GITLAB_UNICORN_MEMORY_MAX
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worker_count = puma_options[:workers] || 1
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# The Puma Worker Killer checks the total RAM used by both the master
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# and worker processes.
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# https://github.com/schneems/puma_worker_killer/blob/v0.1.0/lib/puma_worker_killer/puma_memory.rb#L57
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config.ram = puma_master_max_memory_mb + (worker_count * puma_per_worker_max_memory_mb)
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config.frequency = 20 # seconds
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# We just want to limit to a fixed maximum, unrelated to the total amount
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# of available RAM.
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config.percent_usage = 0.98
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# Ideally we'll never hit the maximum amount of memory. Restart the workers
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# regularly rather than rely on OOM behavior for periodic restarting.
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config.rolling_restart_frequency = 43200 # 12 hours in seconds.
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observer = Gitlab::Cluster::PumaWorkerKillerObserver.new
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config.pre_term = observer.callback
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end
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PumaWorkerKiller.start
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end
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end
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end
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end
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