Hi,
I am working on a mini site that will run capistrano with different
configuration. So I use combination of sidekiq and cap. Inside the sidekiq
worker I call system "cap production deploy". But before that, I want to
stress test the code with a simple rake task (see below). The task is just
printing the application variable.
When I run once
(1..1).each {|i| HardWorker.perform_async('test',i)}
the output is great because it's finished in 0.709 sec for each worker to
finish
When I run five times like so:
(1..5).each {|i| HardWorker.perform_async('test',i)}
the output took double the time 1.55 sec for each worker to finish
And it gets worse when I run 15 times like so:
(1..15).each {|i| HardWorker.perform_async('test',i)}
the output become 4.72 sec for each worker
So is there anything in particular that cause capistrano to run slower when
invoked several time at the same time?
Thank you,
Versions:
- Ruby 2.0
- Capistrano 3.1.0
- Rake / Rails / etc 4.0
Platform:
- OSX 10.9
Logs:
- http://pastie.org/8566562
Files:
- Sidekiq worker:
# app/workers/hard_worker.rb
class HardWorker
include Sidekiq::Worker
def perform(name, count)
puts "Doing hard work #{name} #{count}"
system "cap stress stress:test"
end
end
- Custom rake task:
namespace :stress do
desc "Spit out variable application"
task :test do
puts "application variable => #{fetch(:application)}"
end
end
- Capfile
set :user, "ubuntu"
set :group, "www-data"
#set :use_sudo, false
# Load DSL and Setup Up Stages
require 'capistrano/setup'
# Includes default deployment tasks
require 'capistrano/deploy'
# require rvm on remote server to run rake tasks
#require 'capistrano/rvm'
#require helpers
import 'helpers/checks.rb'
# Loads custom tasks from `lib/capistrano/tasks' if you have any defined.
Dir.glob('tasks/*.rake').each { |r| import r }
- deploy.rb
set :custom_variables, "SOMEVARIABLES"
set :format, :pretty
# set :log_level, :info
set :pty, true
set :keep_releases, 3
- Stage files stress.rb
set :stage, :stress
role :app, ["#{fetch(:user)}@jkt1.myserver.com"]
role :web, ["#{fetch(:user)}@jkt1.myserver.com"]
role :db, ["#{fetch(:user)}@jkt1.myserver.com"]
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