看看我的PHP-FPM统计页面，看起来只有一个进程正在处理所有的连接。
我的猜测是，请求正在执行如此之快，到目前为止，它不需要使用另一个进程。 会是这样吗？
以下是我在PHP-FPM统计信息页面中看到的内容：
pool www process manager static start since 432796 accepted conn 90399 listen queue 0 max listen queue 1 listen queue len 128 idle processes 63 active processes 1 total processes 64 max active processes 6 max children reached 0 这就是我的PHP-FPMconfiguration看起来像：
[General] pid = /var/run/php5-fpm.pid error_log = /var/log/php5-fpm.log syslog.ident = php-fpm syslog.facility = 24 log_level = unknown value emergency_restart_interval = 0s emergency_restart_threshold = 0 process_control_timeout = 0s process.max = 0 process.priority = undefined daemonize = yes rlimit_files = 30000 rlimit_core = 0 events.mechanism = epoll [www] prefix = undefined user = www-data group = www-data listen = 127.0.0.1:9000 listen.backlog = 128 listen.owner = undefined listen.group = undefined listen.mode = undefined listen.allowed_clients = 127.0.0.1 process.priority = undefined pm = static pm.max_children = 64 pm.start_servers = 8 pm.min_spare_servers = 4 pm.max_spare_servers = 10 pm.process_idle_timeout = 10 pm.max_requests = 12800 pm.status_path = /fpm ping.path = undefined ping.response = undefined access.log = undefined access.format = undefined slowlog = /var/log/www.log.slow request_slowlog_timeout = 5s request_terminate_timeout = 120s rlimit_files = 30000 rlimit_core = 0 chroot = undefined chdir = / catch_workers_output = yes security.limit_extensions = .php .phar
为什么PHP-FPM只使用一个进程？
因为… 1就够了。 但是这并不意味着活动进程的数量总是1。
将terminal拆分为2个区域：第一个types：
$ watch 'lynx -dump http://domain.com/fpm'
在第二个，尝试这样的事情：
$ ab -c 1000 -n 10000 http://domain.com/fpm
那么看看第一个地区发生了什么事情：
pool: www process manager: dynamic start time: 04/Sep/2012:23:19:24 +0700 start since: 3441 accepted conn: 42296 listen queue: 0 max listen queue: 8 listen queue len: 128 idle processes: 18 active processes: 3 total processes: 21 max active processes: 21 max children reached: 0