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Created February 8, 2012 11:32
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# Sample configuration file for Unicorn (not Rack)
#
# See http://unicorn.bogomips.org/Unicorn/Configurator.html for complete
# documentation.
RAILS_ENV = 'development'
RAILS_ROOT = File.expand_path('../..', __FILE__)
# Use at least one worker per core if you're on a dedicated server,
# more will usually help for _short_ waits on databases/caches.
worker_processes RAILS_ENV == 'production' ? 6 : 1
# Help ensure your application will always spawn in the symlinked
# "current" directory that Capistrano sets up.
working_directory RAILS_ROOT # available in 0.94.0+
# listen on both a Unix domain socket and a TCP port,
# we use a shorter backlog for quicker failover when busy
# listen "/tmp/unicorn.gsms.sock", :backlog => 64
# nuke workers after 60 seconds (the default)
timeout 60 * 5
# feel free to point this anywhere accessible on the filesystem
#pid "#{RAILS_ROOT}/tmp/pids/unicorn.pid"
# some applications/frameworks log to stderr or stdout, so prevent
# them from going to /dev/null when daemonized here:
#stderr_path "#{RAILS_ROOT}/log/unicorn.stderr.log"
#stdout_path "#{RAILS_ROOT}/log/unicorn.stdout.log"
# combine REE with "preload_app true" for memory savings
# http://rubyenterpriseedition.com/faq.html#adapt_apps_for_cow
preload_app true
GC.respond_to?(:copy_on_write_friendly=) and
GC.copy_on_write_friendly = true
before_fork do |server, worker|
Kernel.rand
defined?(ActiveRecord::Base) and
ActiveRecord::Base.connection.disconnect!
# the following is highly recomended for Rails + "preload_app true"
# as there's no need for the master process to hold a connection
# The following is only recommended for memory/DB-constrained
# installations. It is not needed if your system can house
# twice as many worker_processes as you have configured.
#
# # This allows a new master process to incrementally
# # phase out the old master process with SIGTTOU to avoid a
# # thundering herd (especially in the "preload_app false" case)
# # when doing a transparent upgrade. The last worker spawned
# # will then kill off the old master process with a SIGQUIT.
old_pid = "#{server.config[:pid]}.oldbin"
if old_pid != server.pid
begin
sig = (worker.nr + 1) >= server.worker_processes ? :QUIT : :TTOU
Process.kill(sig, File.read(old_pid).to_i)
rescue Errno::ENOENT, Errno::ESRCH
end
end
#
# # *optionally* throttle the master from forking too quickly by sleeping
sleep 1
end
after_fork do |server, worker|
GC.disable # if RAILS_ENV == 'production'
Kernel.rand
defined?(ActiveRecord::Base) and
ActiveRecord::Base.establish_connection
# per-process listener ports for debugging/admin/migrations
# addr = "127.0.0.1:#{9293 + worker.nr}"
# server.listen(addr, :tries => -1, :delay => 5, :tcp_nopush => true)
# the following is *required* for Rails + "preload_app true",
# Rails.cache.reset
# if preload_app is true, then you may also want to check and
# restart any other shared sockets/descriptors such as Memcached,
# and Redis. TokyoCabinet file handles are safe to reuse
# between any number of forked children (assuming your kernel
# correctly implements pread()/pwrite() system calls)
end
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