libev / libuv / python tornado / nginx 性能比较

libev / libuv / python tornado / nginx  性能比较

最近项目要找一款web 框架，性能是一个很大的指标，在选型的同时，做了一些性能比较，现将测试代码和比较结果和大家分享一下。

说到web 框架，很多人会想到tomcat、jetty，基于java的最常用的两种web server，其性能无法与nginx相比较，在此略过

测试环境：

cpu：2.0G HZ

VMware 虚拟机

nginx

一个worker进程

ab命令：ab -c 500 -n 100000 http://10.10.73.210:80/index.html

qps：11002

我测试的机器是一台VMware 虚拟机，所以性能或许会稍差一些，不过即便如此，qps也能达到万级以上。

python tornado

tornado，在python领域，一直以来tornado的性能都被十分看好，之所以把tornado也纳入备选方案，主要从python的开发效率角度出发

测试代码如下：

import os.path

import tornado.httpserver
import tornado.ioloop
import tornado.options
import tornado.web
import sys

class MainHandler(tornado.web.RequestHandler):
    @tornado.web.asynchronous
    def get(self):
        print("one test client come")
        self.write("Hello, world shen")
        self.finish()

application = tornado.web.Application([
    (r"/", MainHandler),
])

if __name__ == "__main__":
    port = sys.argv[1]
    print port
    application.listen(port)
    tornado.ioloop.IOLoop.instance().start()

ab命令：ab -c 100 -n 10000 http://10.10.73.210:6600/helloworld

qps大约在：1158

通过测试可以发现，虽说tornado性能不错，不过和nginx相比，还是差了许多

由于nginx是基于libevent，设想，如果自己单独开发一套tcp server，其性能会达到多少，当然针对tcp server的选型，epoll是首选，不过开发起来实在麻烦，libevent替代产品主要有libev 和libuv，其性能测试如下：

libev

#include 
#include 
#include 
#include 
#include 
#include   
#include   
#include 
#include 
#include 
#include 
#include 
#include 
#include 

#include "ev.h"

#define BACKLOG         		512
#define LSN_PORT 			8090
#define BUFFER_SIZE 			1024

static size_t		g_ses_count;


typedef struct ses_t {
	// self info
	size_t 	sid;		
}ses_t;


int 
create_listen_fd() {
	// create user listen socket fd
	int listen_fd = socket(AF_INET, SOCK_STREAM, 0);	
	if (-1 == listen_fd) {  
		printf("create socket failed");  
		return -1;	
	}  
	
	int yes = 1;	
	int ret = setsockopt(listen_fd, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int));    
	if (-1 == ret) {	 
		printf("set socket opt SO_REUSEADDR failed");	 
		return -1;	  
	}

	struct sockaddr_in server_addr; 
	memset(&server_addr, 0, sizeof(struct sockaddr_in));  
	  
	server_addr.sin_family		= AF_INET;				// host byte order	
	server_addr.sin_port		= htons(LSN_PORT);		// short, network byte order  
	server_addr.sin_addr.s_addr = INADDR_ANY;			// automatically fill with my IP  
	memset(server_addr.sin_zero, '\0', sizeof(server_addr.sin_zero));  
  
	ret = bind(listen_fd, (struct sockaddr *)&server_addr, sizeof(server_addr));	
	if (-1 == ret) {  
		printf("bind failed");  
		return -1;	
	}  
  
	ret = listen(listen_fd, BACKLOG);  
	if (-1 == ret) {  
		printf("listen failed");  
		return -1;	
	} 

	return listen_fd;
}


void close_ses(struct ev_loop *loop, struct ev_io *watcher, ses_t * ses) {
	if (watcher->fd > 0) {
		close(watcher->fd);
	}

	// free watcher
	if (watcher) {
		ev_io_stop(loop, watcher);
		free(watcher);
	}

	free(ses);
}

void 
user_cb_test(struct ev_loop *loop, struct ev_io *watcher, int revents) {
	ses_t * ses = (ses_t *)watcher->data;
    
    if(EV_ERROR & revents) {
        printf("[%lu]: error event in user_cb", ses->sid);
        return ;
    }

	if (EV_READ & revents) {
		ssize_t buf_tmp_len = 0;
		char	buf_tmp[BUFFER_SIZE] = {0};
		
		buf_tmp_len = recv(watcher->fd, buf_tmp, BUFFER_SIZE, 0);
		if(buf_tmp_len <= 0) {
			printf("[%lu]: recv error, will close ses", ses->sid);
			close_ses(loop, watcher, ses);
			return;
		}
		printf("%s", buf_tmp);
		if (strstr((char *)buf_tmp, "\r\n\r\n")) {
#if 0			
			int i = 0;
			int c = 0;
			for (i = 0; i <= 1000000; i++) {
				int a = 0;
				int b = 1;
				c = a + b + i;
			}
			printf("[%lu][%d]: new user has came\n", ses->sid, c);
#endif			
			char * resp = "HTTP/1.1 200 OK\r\n\
Server: nginx/1.9.3\r\n\
Date: Thu, 13 Aug 2015 03:04:20 GMT\r\n\
Content-Type: text/plain\r\n\
Content-Length: 17\r\n\
Connection: keep-alive\r\n\r\n\
hello_world, shen";
			send(watcher->fd, resp, strlen(resp), 0);
			close_ses(loop, watcher, ses);
			return;
		}
	}
	if (EV_WRITE & revents) {		
		// ad_rp_send_data_to_user(ses);
	}

	return;
}


void 
accept_cb_test(struct ev_loop *loop, struct ev_io *watcher, int revents) {
    if(EV_ERROR & revents) {
        printf("error event in accept_cb_test");
        return;
    }

    struct sockaddr_in user_addr;
	memset(&user_addr, 0, sizeof(struct sockaddr_in));
    socklen_t user_len = sizeof(user_addr);
	
    int user_fd = accept(watcher->fd, (struct sockaddr*)&user_addr, &user_len);
    if(user_fd < 0) {
        printf("accept return error");
        return;
    }
	
	int flags = fcntl(user_fd, F_GETFL, NULL);
	if (flags == -1) {
		printf("failed in fcntl");
		return;
	}
	
	flags |= O_NONBLOCK;
	if (fcntl(user_fd, F_SETFL, flags) == -1) {
		printf("failed in fcntl");
		return;
	}

	struct ev_io * user_w = (struct ev_io*)calloc(1, sizeof(struct ev_io));
	
	ses_t * new_ses 			= calloc(1, sizeof(ses_t));
	new_ses->sid				= g_ses_count++;

	user_w->data	= new_ses;
	ev_io_init(user_w, user_cb_test, user_fd, EV_READ);
	ev_io_start(loop, user_w);
	printf("new user accept\n");
	return;
}


int main(int argc, char *argv[]) {
	printf("=========main start=============\n");
    struct ev_loop *loop = ev_default_loop(0);

	int listen_fd = create_listen_fd();
	if (listen_fd < 0) {
		printf("failed in create user listen fd");
		return -1;
	}
	struct ev_io lst_w;
    ev_io_init(&lst_w, accept_cb_test, listen_fd, EV_READ);
    ev_io_start(loop, &lst_w);

	ev_run(loop, 0);

	return 1;
}

ab命令：ab -c 500 -n 100000 http://10.10.73.210:8090/helloworld
qps：15960

libuv

#include "uv.h"
#include 
#include 
#include 


typedef struct {
	  uv_write_t req;
	    uv_buf_t buf;
} write_req_t;

static uv_tcp_t tcpServer;
static uv_loop_t* loop;
static uv_handle_t* server;

static void echo_alloc(uv_handle_t* handle,
                       size_t suggested_size,
                       uv_buf_t* buf) {
printf("echo alloc called, size[%d]\n", suggested_size);
  buf->base = malloc(suggested_size);
  buf->len = suggested_size;
}


static void after_write(uv_write_t* req, int status) {
  write_req_t* wr;

  /* Free the read/write buffer and the request */
  wr = (write_req_t*) req;
  // free(wr->buf.base);
  free(wr);

  printf("after_write is called\n");

  if (status == 0)
    return;

  fprintf(stderr,
          "uv_write error: %s - %s\n",
          uv_err_name(status),
          uv_strerror(status));
}
static void on_close(uv_handle_t* peer) {
	  free(peer);
}
static void after_read(uv_stream_t* handle,
                       ssize_t nread,
                       const uv_buf_t* buf) {
  int i;
  write_req_t *wr;
  uv_shutdown_t* sreq;
  
  free(buf->base);
  
printf("1111---after_read is called\n");

  if (nread == UV_EOF) {
	  printf("22222---after_read is called\n");

  	return;	
  }
  printf("3333---after_read is called\n");

char * resp = "HTTP/1.1 200 OK\r\n\
Server: nginx/1.9.3\r\n\
Date: Thu, 13 Aug 2015 03:04:20 GMT\r\n\
Content-Type: text/plain\r\n\
Content-Length: 17\r\n\
Connection: keep-alive\r\n\r\n\
hello_world, shen";

  wr = (write_req_t*) malloc(sizeof *wr);
  wr->buf = uv_buf_init(resp, strlen(resp));

  if (uv_write(&wr->req, handle, &wr->buf, 1, after_write)) {
    printf("uv_write failed\n");
  }
printf("4444---after_read is called\n");

 uv_close((uv_handle_t*)handle, on_close);
}



static void on_connection(uv_stream_t* server, int status) {
  uv_stream_t* stream;
  int r;

  if (status != 0) {
    fprintf(stderr, "Connect error %s\n", uv_err_name(status));
  }


	stream = malloc(sizeof(uv_tcp_t));
	r = uv_tcp_init(loop, (uv_tcp_t*)stream);
	

  /* associate server with stream */
  stream->data = server;

  r = uv_accept(server, stream);

  r = uv_read_start(stream, echo_alloc, after_read);
}




int main() {
	loop = uv_default_loop();
	
	struct sockaddr_in addr;
  int r;
  
  int port = 7700;

  uv_ip4_addr("0.0.0.0", port, &addr);

  server = (uv_handle_t*)&tcpServer;

  r = uv_tcp_init(loop, &tcpServer);
  if (r) {
    /* TODO: Error codes */
    fprintf(stderr, "Socket creation error\n");
    return 1;
  }

  r = uv_tcp_bind(&tcpServer, (const struct sockaddr*) &addr, 0);
  if (r) {
    /* TODO: Error codes */
    fprintf(stderr, "Bind error\n");
    return 1;
  }

  r = uv_listen((uv_stream_t*)&tcpServer, SOMAXCONN, on_connection);
  if (r) {
    /* TODO: Error codes */
    fprintf(stderr, "Listen error %s\n", uv_err_name(r));
    return 1;
  }
	
	printf("start loop\n");
	uv_run(loop, UV_RUN_DEFAULT);
  return 0;
}

ab命令：ab -c 500 -n 100000 http://10.10.73.210:7700/helloworld
qps：15879

结论

qps比较：libev（15960） > libuv（15879） > nginx（11002） >  tornado（1158）

1、前三个性能不相上下，nginx略差也不能说明问题，毕竟nginx其处理流程会稍微复杂些（从消息进入到消息返回，会经过若干个module）

2、tornado版本：version 4.1，750+ qps。version 3.2,1100+ qps，版本3.2 要比 4.1 性能略好。