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require 'rack/lobster'
class Benchmarker
PORT = 7000
ADDRESS = '0.0.0.0'
attr_accessor :requests, :concurrencies, :servers, :keep_alive
def initialize
@servers = %w(Mongrel EMongrel Thin)
@requests = 1000
@concurrencies = [1, 10, 100]
end
def writer(&block)
@writer = block
end
def run!
@concurrencies.each do |concurrency|
@servers.each do |server|
req_sec, failed = run_one(server, concurrency)
@writer.call(server, @requests, concurrency, req_sec, failed)
end
end
end
private
def start_server(handler_name)
@server = fork do
[STDOUT, STDERR].each { |o| o.reopen "/dev/null" }
case handler_name
when 'EMongrel'
require 'swiftcore/evented_mongrel'
handler_name = 'Mongrel'
end
app = proc do |env|
[200, {'Content-Type' => 'text/html', 'Content-Length' => '11'}, ['hello world']]
end
handler = Rack::Handler.const_get(handler_name)
handler.run app, :Host => ADDRESS, :Port => PORT
end
sleep 2
end
def stop_server
Process.kill('SIGKILL', @server)
Process.wait
end
def run_ab(concurrency)
`nice -n20 ab -c #{concurrency} -n #{@requests} #{@keep_alive ? '-k' : ''} #{ADDRESS}:#{PORT}/ 2> /dev/null`
end
def run_one(handler_name, concurrency)
start_server(handler_name)
out = run_ab(concurrency)
stop_server
req_sec = if matches = out.match(/^Requests.+?(\d+\.\d+)/)
matches[1].to_i
else
0
end
failed = if matches = out.match(/^Failed requests.+?(\d+)/)
matches[1].to_i
else
0
end
[req_sec, failed]
end
end
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