php-fpm日志 有错误 怎么解决

服务器假死过一次 后面调了php-fpm的一些参数 现在打开日志发现错误，该怎么设置
以下是错误信息：
[19-Nov-2017 04:48:01] NOTICE: error log file re-opened
[19-Nov-2017 05:58:23] NOTICE: [pool www] child 5141 exited with code 0 after 52848.380096 seconds from start
[19-Nov-2017 05:58:23] NOTICE: [pool www] child 9621 started
[21-Nov-2017 08:57:11] NOTICE: [pool www] child 24167 exited with code 0 after 57141.167242 seconds from start
[21-Nov-2017 08:57:11] NOTICE: [pool www] child 29482 started

[21-Nov-2017 09:40:21] WARNING: [pool www] server reached pm.max_children setting (200), consider raising it
[21-Nov-2017 10:21:26] NOTICE: [pool www] child 26686 exited with code 0 after 20112.968606 seconds from start
[21-Nov-2017 10:21:26] NOTICE: [pool www] child 31885 started
[21-Nov-2017 10:34:56] NOTICE: [pool www] child 26900 exited with code 0 after 10454.400780 seconds from start
[21-Nov-2017 10:34:56] NOTICE: [pool www] child 32122 started


这些是服务器上的数据：
ps aux | grep -c php-fpm 得到 202
netstat -napo |grep "php-fpm" | wc -l 得到 298

然后 php-fpm status 下结果

pool: www
process manager: dynamic
start time: 16/Nov/2017:12:15:00 +0800
start since: 428425
accepted conn: 35642
listen queue: 0
max listen queue: 1
listen queue len: 128
idle processes: 0
active processes: 200
total processes: 200
max active processes: 200
max children reached: 1
slow requests: 0