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| RailsRoot = File.expand_path "#{File.dirname __FILE__}/.." | |
| PidsDir = "#{RailsRoot}/tmp/pids" | |
| ListenAddress = "127.0.0.1" | |
| ListenPort = 50000 | |
| UnixListen = "tmp/unicorn.sock" | |
| Backlog = 2048 | |
| Workers = 10 | |
| Timeout = 30 | |
| WorkerWarmUp = true | |
| WorkerWarmUpTime = 4 | |
| WorkerWarmUpUrl = '/' | |
| WorkerKillByRequests = 500..600 | |
| WorkerKillByMemory = 144..192 | |
| # FIXME: this makes the worker too big and activate Unicorn::WorkerKiller::Oom | |
| WorkerOutOfBandGcFrequency = nil | |
| WorkerListen = true | |
| WorkerPidFile = true | |
| working_directory RailsRoot | |
| worker_processes Workers | |
| timeout Timeout | |
| #stderr_path "#{RailsRoot}/log/unicorn.stderr.log" | |
| #stdout_path "#{RailsRoot}/log/unicorn.stdout.log" | |
| pid "#{PidsDir}/unicorn.pid" | |
| listen "#{RailsRoot}/#{UnixListen}", :backlog => Backlog | |
| listen "#{ListenAddress}:#{ListenPort}", :tcp_nopush => true | |
| # combine Ruby 2 or REE with "preload_app true" for memory savings | |
| # http://rubyenterpriseedition.com/faq.html#adapt_apps_for_cow | |
| preload_app true | |
| GC.copy_on_write_friendly = true if GC.respond_to? :copy_on_write_friendly= | |
| before_fork do |server, worker| | |
| # Disconnect since the database connection will not carry over | |
| ActiveRecord::Base.connection.disconnect! if defined? ActiveRecord::Base | |
| # a .oldbin file exists if unicorn was gracefully restarted with a USR2 signal | |
| # we should terminate the old process now that we're up and running | |
| Thread.new do | |
| old_pid_file = "#{PidsDir}/unicorn.pid.oldbin" | |
| if File.exists? old_pid_file | |
| old_pid = File.read(old_pid_file).to_i | |
| Workers.times.each do |worker_nr| | |
| sleep WorkerWarmUpTime | |
| Process.kill "TTOU", old_pid | |
| end if WorkerWarmUp | |
| begin | |
| Process.kill "QUIT", old_pid | |
| File.delete old_pid_file | |
| rescue Errno::ENOENT, Errno::ESRCH | |
| # someone else did our job for us | |
| end | |
| end | |
| end if worker.nr == 0 # only execute once | |
| end | |
| after_fork do |server, worker| | |
| # Start up the database connection again in the worker | |
| ActiveRecord::Base.establish_connection if defined? ActiveRecord::Base | |
| # reset memcache connection | |
| Rails.cache.instance_variable_get(:@data).reset if Rails.cache.class == ActiveSupport::Cache::MemCacheStore | |
| middleware = ActionController::Dispatcher.middleware | |
| if (require 'unicorn/worker_killer' rescue nil) | |
| middleware.use Unicorn::WorkerKiller::MaxRequests, WorkerKillByRequests.begin, WorkerKillByRequests.end if WorkerKillByRequests | |
| middleware.use Unicorn::WorkerKiller::Oom, WorkerKillByMemory.begin * (1024**2), WorkerKillByMemory.end * (1024**2) if WorkerKillByMemory | |
| end | |
| if WorkerOutOfBandGcFrequency | |
| require_dependency 'unicorn/oob_gc' | |
| GC.disable | |
| middleware.use Unicorn::OobGC, WorkerOutOfBandGcFrequency | |
| end | |
| # say to the kernel to kill very big workers first than other processes | |
| File.open("/proc/#{Process.pid}/oom_adj", "w"){ |f| f << '12' } | |
| if WorkerWarmUp | |
| # Don't warm up all workers at once, to allow old workers to use CPU. | |
| # Also, worker is only considered ready on after_fork complete, so the new worker worker is ready only after warm up. | |
| sleep worker.nr * WorkerWarmUpTime | |
| # make a request warming up this new worker | |
| require 'rack/test' | |
| request = Rack::MockRequest.new server.app | |
| request.get "http://#{ListenAddress}:#{ListenPort}#{WorkerWarmUpUrl}" | |
| end | |
| if WorkerListen | |
| # per-process listener ports for debugging/admin/migrations | |
| server.listen "#{ListenAddress}:#{ListenPort + worker.nr}", :tries => -1, :delay => 5 | |
| end | |
| if WorkerPidFile | |
| child_pid_file = server.config[:pid].sub '.pid', ".#{worker.nr}.pid" | |
| system "echo #{Process.pid} > #{child_pid_file}" | |
| end | |
| end |
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