Why Eventmachine Defer slower than Ruby Thread?
- by allenwei
I have two scripts which using mechanize to fetch google index page. I assuming Eventmachine will faster than ruby thread, but not.
Eventmachine code cost "0.24s user 0.08s system 2% cpu 12.682 total"
Ruby Thread code cost "0.22s user 0.08s system 5% cpu 5.167 total "
Am I use eventmachine in wrong way?
Who can explain it to me, thanks!
1 Eventmachine
require 'rubygems'
require 'mechanize'
require 'eventmachine'
trap("INT") {EM.stop}
EM.run do
num = 0
operation = proc {
agent = Mechanize.new
sleep 1
agent.get("http://google.com").body.to_s.size
}
callback = proc { |result|
sleep 1
puts result
num+=1
EM.stop if num == 9
}
10.times do
EventMachine.defer operation, callback
end
end
2 Ruby Thread
require 'rubygems'
require 'mechanize'
threads = []
10.times do
threads << Thread.new do
agent = Mechanize.new
sleep 1
puts agent.get("http://google.com").body.to_s.size
sleep 1
end
end
threads.each do |aThread|
aThread.join
end
