当前状态：
idle processes: 288
active processes: 71
total processes: 359
max active processes: 359
配置文件：
pm = dynamic
pm.max_children = 500
pm.start_servers = 5
pm.min_spare_servers = 5
pm.max_spare_servers = 500
pm.max_requests = 300
total processes 的值为何只会增加不会减少呢？idle processes空闲这么多，有什么办法自动结束一部分么？减少内存消耗。请朋友们帮忙看看