How to set the number of php processes

Just add the following configuration to the php-fpm.conf configuration file:

pm.max_children = 100    #，子进程最大数
pm.start_servers = 30    #，启动时的进程数
pm.min_spare_servers = 20    #，保证空闲进程数最小值，如果空闲进程小于此值，则创建新的子进程
pm.max_spare_servers = 100    #，保证空闲进程数最大值，如果空闲进程大于此值，此进行清理
pm.max_requests = 500    #设置每个子进程重生之前服务的请求数. 对于可能存在内存泄漏的第三方模块来说是非常有用的. 如果设置为 ’0′ 则一直接受请求. 等同于 PHP_FCGI_MAX_REQUESTS 环境变量. 默认值: 0.

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