什么是我的nginx + php服务器的瓶颈？

我在我的nginx服务器上运行一些攻击testing。 瓶颈似乎不是CPU或内存，那么它是什么？

我试图在我的MacBook上做到这一点：

sudo siege -t 10s -c 500 server_ip/test.php 

响应时间达到10秒，在完成之前我得到错误和围困中止。

但我如果在我的服务器上运行上述

• 如何访问自动扩展数据库服务器，因为不知道IP地址
• 如何使用弹性beanstalk获得关于错误500的通知
• 将亚马逊的ELB域名更改为我自己的域名，而不必在解决此问题时进行更改
• AWS写入权限，httpd 2.4
• 为什么我不能在我的aws ec2实例上查看我的应用程序？ 部署与meteor

 siege -t 10s -c 500 localhost/test.php 

我得到：

 Transactions: 6555 hits Availability: 95.14 % Elapsed time: 9.51 secs Data transferred: 117.30 MB Response time: 0.18 secs Transaction rate: 689.27 trans/sec Throughput: 12.33 MB/sec Concurrency: 127.11 Successful transactions: 6555 Failed transactions: 335 Longest transaction: 1.31 Shortest transaction: 0.00 

我还注意到，对于较低的并发数字，本地主机上的事务处理速度比外部处理大大提高了。

但是，当上面在本地主机上运行时，CPU使用率较低，HTOP上的内存使用率较低。 所以我很困惑如何提升性能，因为我看不到瓶颈。

ulimit返回50000，因为我增加了它。 有4个nginx工作进程是我的cpu核心的2倍。 这是我的其他设置

 worker_rlimit_nofile 40000; events { worker_connections 20000; # multi_accept on; } tcp_nopush on; tcp_nodelay on; keepalive_timeout 65; types_hash_max_size 2048; 

test.php只是一个回声phpinfo（）脚本，没有别的。 没有数据库连接。

这台机器是一个AWS m3大，2个cpu核心，我相信大约7gb的ram。

这是我的服务器块的内容：

  listen 80 default_server; listen [::]:80 default_server ipv6only=on; root /var/www/sitename; index index.php index.html index.htm; # Make site accessible from http://localhost/ server_name localhost; location / { try_files $uri $uri.html $uri/ @extensionless-php; } location @extensionless-php { rewrite ^(.*)$ $1.php last; } error_page 404 /404.html; error_page 500 502 503 504 /50x.html; location = /50x.html { root /usr/share/nginx/html; } # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 # location ~ \.php$ { try_files $uri =404; fastcgi_split_path_info ^(.+\.php)(/.+)$; fastcgi_pass unix:/var/run/php5-fpm.sock; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } 

我的php-fpm设置：

  pm = dynamic ; The number of child processes to be created when pm is set to 'static' and the ; maximum number of child processes when pm is set to 'dynamic' or 'ondemand'. ; This value sets the limit on the number of simultaneous requests that will be ; served. Equivalent to the ApacheMaxClients directive with mpm_prefork. ; Equivalent to the PHP_FCGI_CHILDREN environment variable in the original PHP ; CGI. The below defaults are based on a server without much resources. Don't ; forget to tweak pm.* to fit your needs. ; Note: Used when pm is set to 'static', 'dynamic' or 'ondemand' ; Note: This value is mandatory. pm.max_children = 40 ; The number of child processes created on startup. ; Note: Used only when pm is set to 'dynamic' ; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2 pm.start_servers = 30 ; The desired minimum number of idle server processes. ; Note: Used only when pm is set to 'dynamic' ; Note: Mandatory when pm is set to 'dynamic' pm.min_spare_servers = 20 ; The desired maximum number of idle server processes. ; Note: Used only when pm is set to 'dynamic' ; Note: Mandatory when pm is set to 'dynamic' pm.max_spare_servers = 35 ; The number of seconds after which an idle process will be killed. ; Note: Used only when pm is set to 'ondemand' ; Default Value: 10s ;pm.process_idle_timeout = 10s; ; The number of requests each child process should execute before respawning. ; This can be useful to work around memory leaks in 3rd party libraries. For ; endless request processing specify '0'. Equivalent to PHP_FCGI_MAX_REQUESTS. ; Default Value: 0 ;pm.max_requests = 500