lnmp 安装的nginx 如何优化？提高并发

dabizichali

本地用ab压测线上nginx服务器：
Server Software:        nginx
Server Hostname:        ************
Server Port:        443
Document Path:        /
Document Length:        166 bytes
Concurrency Level:        20
Time taken for tests:        89.538 seconds
Complete requests:        200
Failed requests:        190
(Connect: 0, Length: 190, Exceptions: 0)
Non-2xx responses:        10
Total transferred:        28153479 bytes
HTML transferred:        27263399 bytes
Requests per second:        2.23
Transfer rate:        307.06 kb/s received
Connnection Times (ms)
        min        avg        max
Connect:        69        270        1120
Processing:        2267        8275        24068
Total:        2336        8545        25188
第二次访问https hello word
Server Software:        nginx
Server Hostname:        ************
Server Port:        443
Document Path:        /testrps.php
Document Length:        11 bytes
Concurrency Level:        20
Time taken for tests:        9.212 seconds
Complete requests:        200
Failed requests:        0
Total transferred:        38000 bytes
HTML transferred:        2200 bytes
Requests per second:        21.71
Transfer rate:        4.03 kb/s received
Connnection Times (ms)
        min        avg        max
Connect:        169        560        1148
Processing:        233        306        441
Total:        402        866        1589
第三次访问http hello world
Server Software:        nginx
Server Hostname:        ************
Server Port:        80
Document Path:        /testrps.php
Document Length:        11 bytes
Concurrency Level:        20
Time taken for tests:        6.663 seconds
Complete requests:        200
Failed requests:        0
Total transferred:        38000 bytes
HTML transferred:        2200 bytes
Requests per second:        30.01
Transfer rate:        5.57 kb/s received
Connnection Times (ms)
        min        avg        max
Connect:        16        32        135
Processing:        43        605        1146
Total:        59        637        1281

服务器配置如下
CPU： 2核
内存： 8 GB
实例类型： I/O优化
操作系统： CentOS  6.8 64位
当前使用带宽： 5Mbps
实例规格族： 通用型

rps极不理想，nginx与php-frm做了些优化，感觉不到效果

nginx.conf

worker_processes 4;
worker_cpu_affinity 01 10 01 10;
        sendfile   on;
        tcp_nopush on;

        keepalive_timeout 60;

        tcp_nodelay on;

        fastcgi_buffers 256 16k;
        fastcgi_buffer_size 128k;
        fastcgi_connect_timeout 3s;
        fastcgi_send_timeout 120s;
        fastcgi_read_timeout 120s;
        fastcgi_busy_buffers_size 256k;
        fastcgi_temp_file_write_size 256k;

        gzip on;
        gzip_min_length  1k;
        gzip_buffers     4 16k;
        gzip_http_version 1.1;
        gzip_comp_level 2;
        gzip_types     text/plain application/javascript application/x-javascript text/javascript text/css application/xml application/xml+rss;
        gzip_vary on;
        gzip_proxied   expired no-cache no-store private auth;
        gzip_disable   "MSIE [1-6]\.";

php-fpm.conf
listen = /tmp/php-cgi.sock
listen.backlog = -1
listen.allowed_clients = 127.0.0.1
listen.owner = www
listen.group = www
listen.mode = 0666
user = www
group = www
pm = static
pm.max_children = 100
pm.start_servers = 30
pm.min_spare_servers = 30
pm.max_spare_servers = 60
pm.max_requests = 200
request_terminate_timeout = 100
request_slowlog_timeout = 0
slowlog = var/log/slow.log