我是PHP-FPM的新手，我已经注意到随机间隔，它似乎只是locking。
[26-Dec-2014 22:50:16] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 921 total children [26-Dec-2014 22:50:17] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 931 total children [26-Dec-2014 22:50:18] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 941 total children [26-Dec-2014 22:50:19] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 951 total children [26-Dec-2014 22:50:20] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 961 total children [26-Dec-2014 22:50:21] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 971 total children [26-Dec-2014 22:50:22] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 981 total children [26-Dec-2014 22:50:23] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 991 total children [26-Dec-2014 22:50:24] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 1001 total children [26-Dec-2014 22:50:25] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 1011 total children [26-Dec-2014 22:50:26] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 1021 total children [26-Dec-2014 22:50:27] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 9 idle, and 1031 total children 这种情况看起来是随机的（我们可以在每分钟200个网站上每分钟有50人），当PHP-FPM停止服务请求时（看起来上面看起来不能满足需求）
即使我重新启动PHP-FPM，它仍然被locking很短的时间。
[26-Dec-2014 22:52:41] NOTICE: Terminating ... [26-Dec-2014 22:52:41] NOTICE: exiting, bye-bye! [26-Dec-2014 22:52:41] NOTICE: fpm is running, pid 17484 [26-Dec-2014 22:52:41] NOTICE: ready to handle connections [26-Dec-2014 22:53:15] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 0 idle, and 53 total children [26-Dec-2014 22:53:16] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 16 children, there are 0 idle, and 61 total children [26-Dec-2014 22:53:17] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 71 total children [26-Dec-2014 22:53:18] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 81 total children [26-Dec-2014 22:57:01] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 0 idle, and 109 total children [26-Dec-2014 22:58:09] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 0 idle, and 124 total children [26-Dec-2014 22:58:10] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 16 children, there are 0 idle, and 132 total children [26-Dec-2014 22:58:11] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 142 total children [26-Dec-2014 22:58:12] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 152 total children [26-Dec-2014 22:58:13] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 162 total children [26-Dec-2014 22:58:14] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 172 total children [26-Dec-2014 22:58:15] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 182 total children [26-Dec-2014 22:58:16] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 192 total children [26-Dec-2014 22:58:17] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 202 total children
这是我的设置
pm.max_children = 2000 pm.start_servers = 20 pm.min_spare_servers = 10 pm.max_spare_servers = 200 pm.max_requests = 500
我也尝试过这些
pm.max_children = 2000 pm.start_servers = 20 pm.min_spare_servers = 20 pm.max_spare_servers = 50 pm.max_requests = 500
和其他一些组合，但仍然看到这个问题。
服务器是32核心，64GB内存。 使用Apache和FastCGI
谢谢
尝试这个：
注意：仅在pm设置为“dynamic”时使用
pm.start_servers = min_spare_servers +（max_spare_servers – min_spare_servers）/ 2
pm = dynamic pm.max_children = 500 pm.start_servers = 60 pm.min_spare_servers = 20 pm.max_spare_servers = 100 pm.max_requests = 10000;
或者像这样：
pm = ondemand pm.max_children = 500 pm.max_requests = 10000
无论如何，你需要使用caching。