curl -OL http://ftpmirror.gnu.org/libtool/libtool-2.4.2.tar.gz
tar -xzf libtool-2.4.2.tar.gz
cd libtool-2.4.2
./configure && make && sudo make install

# brew install 'https://raw.github.com/simonair/homebrew-dupes/e5177ef4fc82ae5246842e5a544124722c9e975b/ab.rb'
# brew test ab

curl -O https://archive.apache.org/dist/httpd/httpd-2.4.2.tar.bz2
tar zxvf httpd-2.4.2.tar.bz2
cd httpd-2.4.2.tar.bz2
./configure && make && make install

ab -n 10 -c 1 http://localhost:8000/
ab -n 10 -c 2 http://localhost:8000/
ab -n 10 -c 5 http://localhost:8000/
ab -n 10 -c 10 http://localhost:8000/


ab -n 100 -c 10 http://localhost:8000/
ab -n 100 -c 20 http://localhost:8000/
ab -n 100 -c 50 http://localhost:8000/
ab -n 100 -c 100 http://localhost:8000/

from concurrent.futures import ThreadPoolExecutor
import tornado
from tornado.concurrent import run_on_executor
from tornado.web import RequestHandler
import time


class SimpleAsyncServer(RequestHandler):
    def __init__(self, application, request, **kwargs):
        super(SimpleAsyncServer, self).__init__(application, request, **kwargs)
        self.executor = ThreadPoolExecutor(10)

    @tornado.gen.coroutine
    def get(self, ):
        print("on get...")
        result = yield self._do_something()

        self.write(result)

    @run_on_executor
    def _do_something(self, ):
        """
            模拟耗时操作
        :return:
        """
        time.sleep(5)
        return {"msg": "OK"}


def make_app():
    return tornado.web.Application([
        (r"/", SimpleAsyncServer),
    ])


if __name__ == "__main__":
    app = make_app()
    app.listen(8000)
    tornado.ioloop.IOLoop.current().start()