C10K问题的解决，涌现出一大批新框架，或者新语言，那么问题来了:到底谁最快呢？非专业程序猿来个非专业对比。
比较程序：输出Hello World！
测试程序：siege –c 100 –r 100 –b
例子包括：
1.go用http模块实现的helloworld
2.go用martini微框架实现的Helloworld
3.python3 python2 pypy分别用gevent server tornado实现的Hello world
4.python3 python2 pypy分别用微框架bottle+gevent实现的Hello world
5.NodeJS纯JS实现的Helloworld
6.NodeJS用express框架实现的Helloworld
测试平台：
公司老旧的奔腾平台 Pentium(R) Dual-Core CPU E6700 @ 3.20GHz
内存2GB（够弱了吧）
先来宇宙最快的GO的测试：
package main
import (
"fmt"
"net/http"
)
func sayhelloName(w http.ResponseWriter, r *http.Request){
fmt.Fprintf(w, "hello world!")
}
func main() {
http.HandleFunc("/", sayhelloName)
http.ListenAndServe(":9090", nil)
}
连续测试5次，成绩大体如下：
Transactions: 10000 hits Availability: 100.00 % Elapsed time: 4.11 secs Data transferred: 0.11 MB Response time: 0.03 secs Transaction rate: 2433.09 trans/sec Throughput: 0.03 MB/sec Concurrency: 79.76 Successful transactions: 10000 Failed transactions: 0 Longest transaction: 0.20 Shortest transaction: 0.00
4.11秒，不错的成绩
再看NodeJS的例子：
var http = require("http");
http.createServer(function(request, response) {
response.writeHead(200, {"Content-Type": "text/plain"});
response.write("Hello World!");
response.end();
}).listen(8000);
console.log("nodejs start listen 8888 port!");
测试结果如下：
Transactions: 10000 hits Availability: 100.00 % Elapsed time: 5.00 secs Data transferred: 0.11 MB Response time: 0.04 secs Transaction rate: 2000.00 trans/sec Throughput: 0.02 MB/sec Concurrency: 86.84 Successful transactions: 10000 Failed transactions: 0 Longest transaction: 0.17 Shortest transaction: 0.00
5秒，比Go稍微慢一点
接下来是Python，由于python自带的wsgiref服务器，只是一个参考实现，性能很差，所以这里选用了两个性能不错的WSGI服务器gevent、tornado
gevent代码如下：
#!/usr/bin/python
from gevent import pywsgi
def hello_world(env, start_response):
if env['PATH_INFO'] == '/':
start_response('200 OK', [('Content-Type', 'text/html')])
return ["hello world"]
print 'Serving on https://127.0.0.1:8000'
server = pywsgi.WSGIServer(('0.0.0.0', 8000), hello_world )
server.serve_forever()
tornado的代码如下：
from tornado import httpserver
from tornado import ioloop
def handle_request(request):
if request.uri=='/':
message = b"Hello World!"
request.write(b"HTTP/1.1 200 OK\r\nContent-Length: %d\r\n\r\n%s" % (
len(message), message))
request.finish()
http_server = httpserver.HTTPServer(handle_request)
http_server.bind(8888)
http_server.start()
ioloop.IOLoop.instance().start()
由于python的例子要分别在python2 python3 pypy下跑，结果太多，我这里只给结果：
gevent：
python2：5.8秒，python3：7.5秒，pypy：4.8秒
有意思的是：pypy第一次跑用了6.8秒，第二次以后全是4.8秒（感觉原因是第一次由于jit浪费了一点时间）贴出某次pypy的成绩：
Transactions: 10000 hits Availability: 100.00 % Elapsed time: 4.77 secs Data transferred: 0.10 MB Response time: 0.04 secs Transaction rate: 2096.44 trans/sec Throughput: 0.02 MB/sec Concurrency: 90.38 Successful transactions: 10000 Failed transactions: 0 Longest transaction: 0.13 Shortest transaction: 0.00
接下来是tornado：
python2：9.05秒，python3：8.6秒，pypy：5.95秒
同样：pypy第一次执行的时间为9.45秒，以后的每次只执行时间为5.9秒多一些
可以看出，pypy 与go nodejs性能相当，其中go最快为4.11秒，pypy+gevent与nodejs性能差不多，pypy稍好一点，pypy+tornado则稍慢于nodejs。
2。框架篇：
从上边例子可以看到，纯代码写起来还是比较麻烦的，一般我们都是用框架来写web，我选了几个轻量级的框架来输出helloworld：
go+martini
package main
import "github.com/codegangsta/martini"
func main() {
m := martini.Classic()
m.Get("/", func() string {
return "Hello world!"
})
m.Run()
}
运行时间为：
Transactions: 10000 hits Availability: 100.00 % Elapsed time: 4.69 secs Data transferred: 0.11 MB Response time: 0.04 secs Transaction rate: 2132.20 trans/sec Throughput: 0.02 MB/sec Concurrency: 90.23 Successful transactions: 10000 Failed transactions: 0 Longest transaction: 0.17 Shortest transaction: 0.00
nodejs+express：
var express = require('express')
var app = express()
app.get('/', function (req, res) {
res.send('Hello World')
})
app.listen(3000)
用时：
Transactions: 10000 hits Availability: 100.00 % Elapsed time: 5.90 secs Data transferred: 0.10 MB Response time: 0.06 secs Transaction rate: 1694.92 trans/sec Throughput: 0.02 MB/sec Concurrency: 96.44 Successful transactions: 10000 Failed transactions: 0 Longest transaction: 0.13 Shortest transaction: 0.01
python gevent+bottle：
from gevent import monkey
monkey.patch_all()
from bottle import run,get
@get("/")
def index():
return "Hello world!"
run(server='gevent')
用时：python2 10.05秒，python3：12.95秒，pypy：5.85秒
python tornado：
import tornado.httpserver
import tornado.ioloop
import tornado.web
class IndexHandler(tornado.web.RequestHandler):
def get(self):
self.write('Hello World!')
if __name__ == "__main__":
app = tornado.web.Application(handlers=[(r"/",IndexHandler)])
http_server = tornado.httpserver.HTTPServer(app)
http_server.listen(8000)
tornado.ioloop.IOLoop.instance().start()
用时：python2 11.85秒，python3：11.79秒，pypy：6.65秒
总结：可以看到，python在开启jit技术的pypy上web响应速度已经略优于nodejs，跟golang还有一定差距，但在同一数量级，标准python就稍微慢一些。
