# server 127.0.0.1:9001 weight=100 max_fails=10 fail_timeout=30;
# server 127.0.0.1:9002 weight=100 max_fails=10 fail_timeout=30;
# server 127.0.0.1:9003 weight=100 max_fails=10 fail_timeout=30;
server unix:/var/www/php-fpm.sock weight=100 max_fails=10 fail_timeout=30;
server unix:/var/www/php-fpm1.sock weight=100 max_fails=10 fail_timeout=30;
server unix:/var/www/php-fpm2.sock weight=100 max_fails=10 fail_timeout=30;
server unix:/var/www/php-fpm3.sock weight=100 max_fails=10 fail_timeout=30;
# server unix:/var/www/php-fpm4.sock weight=100 max_fails=10 fail_timeout=30;
# server unix:/var/www/php-fpm5.sock weight=100 max_fails=10 fail_timeout=30;
# server unix:/var/www/php-fpm6.sock weight=100 max_fails=10 fail_timeout=30;
# server unix:/var/www/php-fpm7.sock weight=100 max_fails=10 fail_timeout=30;
}
location ~ .php* {
fastcgi_pass phpbackend;
# fastcgi_pass unix:/var/www/php-fpm.sock;
fastcgi_index index.php;
...
}
6、测试环境和结果
内存2G
swap2G
cpu 2核 Intel(R) Xeon(R) CPU E5405 @ 2.00GHz
采用ab远程访问测试，测试程序为php的字符串处理程序
1）在开4个php-fpm实例，nginx 8个worker_processes 每个cpu4
worker_processes ，backlog为1024，php的backlog为2048，内核backlog为4096
采用unix domain socket连接的情况下，其他保持参数不变
性能和错误率较为平衡，可接受，超过4个fpm实例，性能开始下降，错误率并没有明显下降
结论是：fpm实例数，worker_processes数和cpu保持倍数关系，性能较高
影响性能和报错的参数为php-fpm实例，nginx worker_processes数量，fpm的 max_request，php的backlog，unix domain socket
10W请求，500并发无报错，1000并发报错率为0.9%
500并发：
Time taken for tests: 25 seconds avg.
Complete requests: 100000
Failed requests: 0
Write errors: 0
Requests per second: 4000 [#/sec] (mean) avg.
Time per request: 122.313 [ms] (mean)
Time per request: 0.245 [ms] (mean, across all concurrent requests)
Transfer rate: 800 [Kbytes/sec] received avg.
1000并发：
Time taken for tests: 25 seconds avg.
Complete requests: 100000
Failed requests: 524
(Connect: 0, Length: 524, Exceptions: 0)
Write errors: 0
Non-2xx responses: 524
Requests per second: 3903.25 [#/sec] (mean)
Time per request: 256.197 [ms] (mean)
Time per request: 0.256 [ms] (mean, across all concurrent requests)
Transfer rate: 772.37 [Kbytes/sec] received
2）在其他参数不变，unix domain socket换为tcp网络端口连接，结果如下
500并发：
Concurrency Level: 500
Time taken for tests: 26.934431 seconds
Complete requests: 100000