centos 5.3 nginx-0.8.31-1.el5 php-fpm-5.2.11
# service php-fpm start
Jan 08 10:55:22.912284 [NOTICE] fpm_unix_init_main(), line 284: getrlimit(nofile): max:1024, cur:1024
Jan 08 10:55:22.913126 [NOTICE] fpm_event_init_main(), line 88: libevent: using epoll
Jan 08 10:55:22.913404 [NOTICE] fpm_init(), line 50: fpm is running, pid 2730
Jan 08 10:55:22.918493 [NOTICE] fpm_children_make(), line 352: child 2731 (pool default) started
Jan 08 10:55:22.922118 [NOTICE] fpm_children_make(), line 352: child 2732 (pool default) started
Jan 08 10:55:22.924813 [NOTICE] fpm_children_make(), line 352: child 2734 (pool default) started
Jan 08 10:55:22.927509 [NOTICE] fpm_children_make(), line 352: child 2735 (pool default) started
Jan 08 10:55:22.929378 [NOTICE] fpm_children_make(), line 352: child 2736 (pool default) started
Jan 08 10:55:22.930268 [NOTICE] fpm_event_loop(), line 107: libevent: entering main loop

# service php-fpm stop
php-fpm.log 会出现以下问题
Jan 08 10:56:22.516549 [NOTICE] fpm_got_signal(), line 56: received SIGTERM
Jan 08 10:56:22.516620 [NOTICE] fpm_pctl(), line 256: switching to ‘terminating’ state
Jan 08 10:56:22.516666 [NOTICE] fpm_pctl_kill_all(), line 172: sending signal 15 SIGTERM to child 2736 (pool default)
Jan 08 10:56:22.516707 [NOTICE] fpm_pctl_kill_all(), line 172: sending signal 15 SIGTERM to child 2735 (pool default)
Jan 08 10:56:22.516729 [NOTICE] fpm_pctl_kill_all(), line 172: sending signal 15 SIGTERM to child 2734 (pool default)
Jan 08 10:56:22.516747 [NOTICE] fpm_pctl_kill_all(), line 172: sending signal 15 SIGTERM to child 2732 (pool default)
Jan 08 10:56:22.516765 [NOTICE] fpm_pctl_kill_all(), line 172: sending signal 15 SIGTERM to child 2731 (pool default)
Jan 08 10:56:22.516778 [NOTICE] fpm_pctl_kill_all(), line 181: 5 children are still alive
Jan 08 10:56:22.517532 [NOTICE] fpm_got_signal(), line 48: received SIGCHLD
Jan 08 10:56:22.517620 [WARNING] fpm_children_bury(), line 215: child 2736 (pool default) exited on signal 15 SIGTERM after 59.588363 seconds from start
Jan 08 10:56:22.518131 [NOTICE] fpm_got_signal(), line 48: received SIGCHLD
Jan 08 10:56:22.518195 [WARNING] fpm_children_bury(), line 215: child 2735 (pool default) exited on signal 15 SIGTERM after 59.590726 seconds from start
Jan 08 10:56:22.518906 [NOTICE] fpm_got_signal(), line 48: received SIGCHLD
Jan 08 10:56:22.518969 [WARNING] fpm_children_bury(), line 215: child 2734 (pool default) exited on signal 15 SIGTERM after 59.594192 seconds from start
Jan 08 10:56:22.519518 [NOTICE] fpm_got_signal(), line 48: received SIGCHLD
Jan 08 10:56:22.519580 [WARNING] fpm_children_bury(), line 215: child 2732 (pool default) exited on signal 15 SIGTERM after 59.597517 seconds from start
Jan 08 10:56:22.520107 [NOTICE] fpm_got_signal(), line 48: received SIGCHLD
Jan 08 10:56:22.520159 [WARNING] fpm_children_bury(), line 215: child 2731 (pool default) exited on signal 15 SIGTERM after 59.601726 seconds from start
Jan 08 10:56:22.520193 [NOTICE] fpm_pctl_exit(), line 81: exiting, bye-bye!

# vi /etc/sysctl.conf
底部添加
fs.file-max=65535
#vi /etc/security/limits.conf
加上
* soft nofile 65535
* hard nofile 65535