因为之前发生502了，日志提示

创新互联公司是创新、创意、研发型一体的综合型网站建设公司，自成立以来公司不断探索创新，始终坚持为客户提供满意周到的服务，在本地打下了良好的口碑，在过去的10多年时间我们累计服务了上千家以及全国政企客户，如成都发电机回收等企业单位，完善的项目管理流程，严格把控项目进度与质量监控加上过硬的技术实力获得客户的一致称誉。

[27-May-2015 13:54:34] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 16 idle, and 602 total children

然后我就自己随意增加了pm.start_servers参数，一段时间后，php日志/usr/local/php/var/log/php-fpm.log部分信息如下：

[27-May-2015 15:13:48] NOTICE: [pool www] child 3998 started

[27-May-2015 15:13:59] NOTICE: [pool www] child 9242 exited with code 0 after 47575.960999 seconds from start

[27-May-2015 15:13:59] NOTICE: [pool www] child 4210 started

[27-May-2015 15:14:42] NOTICE: [pool www] child 9217 exited with code 0 after 47619.884065 seconds from start

[27-May-2015 15:14:42] NOTICE: [pool www] child 5621 started

[27-May-2015 15:14:43] NOTICE: [pool www] child 9561 exited with code 0 after 47620.024499 seconds from start

原因就是没有pm.start_servers这个参数没有按照下面的这个公式来:

pm.start_servers= min_spare_servers + (max_spare_servers - min_spare_servers) / 2

一般min_spare_servers设置为20

max_spare_servers是根据服务器本身的内存来计算的，标准算法就是内存大小除以30M

当然，有的php程序可能占用比较小，不到30M，这就看情况来计算了。

我设置的是这样的

过滤注释部分:

cat /usr/local/php/etc/php-fpm.conf | grep -v "^;" | grep -v "^$"

[global]

pid = run/php-fpm.pid

error_log = log/php-fpm.log

emergency_restart_threshold = 10

emergency_restart_interval = 1m

process_control_timeout = 10s

 

rlimit_files = 65535

 

events.mechanism = epoll

[www]

user = www

group = www

listen = 127.0.0.1:9000

 

pm = dynamic

pm.max_children = 1400

pm.start_servers = 710

pm.min_spare_servers = 20

pm.max_spare_servers = 1400

 

pm.max_requests = 10000

 

 

slowlog = log/$pool.log.slow

然后重新加载下
/usr/local/nginx/sbin/nginx -s reload

之后几天日志没有出现信息了。

当前文章：php日志报错childexitedwithcode0aftersecondsfromstart
链接地址：http://scyanting.com/article/gieijj.html