nginx做负载均衡 访问会非常慢是什么原因 单独访问应用会很快

[再见红绿灯]

nginx.conf:

user 111;
worker_processes auto;

error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;

pid logs/nginx.pid;


events {
use epoll;
worker_connections 1024;
}


http {
include mime.types;
default_type application/octet-stream;

#log_format main '$remote_addr - $remote_user [$time_local] "$request" '
# '$status $body_bytes_sent "$http_referer" '
# '"$http_user_agent" "$http_x_forwarded_for"';

access_log logs/access.log main;

sendfile on;
#tcp_nopush on;

#keepalive_timeout 0;
keepalive_timeout 65;

gzip on;
client_header_buffer_size 1k;
large_client_header_buffers 4 4k;
include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;
upstream tomcat{
server localhost:8080 max_fails=3;
server localhost:8090 max_fails=3;
}
server {
listen 80;
server_name tomcat;
#server_name localhost;

#charset koi8-r;

#access_log logs/host.access.log main;

location / {
proxy_pass http://tomcat;
# root;
# index index.html;
}
location /NginxStatus {
stub_status on;
access_log on;
auth_basic "NginxStatus";
auth_basic_user_file conf/htpasswd;
}
#error_page 404 /404.html;

# redirect server error pages to the static page /50x.html
#
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}

# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
# proxy_pass http://127.0.0.1;
#}

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \.php$ {
# root html;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
# include fastcgi_params;
#}

# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
}


# another virtual host using mix of IP-, name-, and port-based configuration
#
#server {
# listen 8000;
# listen somename:8080;
# server_name somename alias another.alias;

# location / {
# root html;
# index index.html index.htm;
# }
#}


# HTTPS server
#
#server {
# listen 443 ssl;
# server_name localhost;

# ssl_certificate cert.pem;
# ssl_certificate_key cert.key;

# ssl_session_cache shared:SSL:1m;
# ssl_session_timeout 5m;

# ssl_ciphers HIGH:!aNULL:!MD5;
# ssl_prefer_server_ciphers on;

# location / {
# root html;
# index index.html index.htm;
# }
#}

}

[方丈的寺院]

理论上应该不会，负载均衡只是均衡处理请求，提高集群处理能力。 抓下包，看下请求到达各个节点时间