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标题: cpu一直高负荷 [打印本页]

作者: superman 时间: 2013-11-23 22:27
标题: cpu一直高负荷
在论坛搜索了所有的cpu100%的例子 php-fpm跑满屏也都按照修改php-fpm my.cnf 但是都没有效果希望军哥帮忙看看谢谢

还请军哥帮忙看看感激不尽

[ 本帖最后由 superman 于 2013-11-24 10:33 编辑 ]

作者: licess 时间: 2013-11-24 09:38
这个只能看到在那个时间挂了，无法分析可能的原因
建议php-fpm.conf里加上request_terminate_timeout = 5s 后面的这个秒数可以自己定义，看看慢日志里有什么有用的信息

作者: superman 时间: 2013-11-24 12:42
标题: 回复 2# 的帖子
[24-Aug-2013 20:48:14] 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 34 total children
[24-Aug-2013 20:48:37] 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 23 total children
[24-Aug-2013 20:48:38] 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 24 total children
[24-Aug-2013 20:48:39] 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 25 total children
[24-Aug-2013 20:48:40] 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 26 total children
[24-Aug-2013 20:48:41] 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 27 total children
[24-Aug-2013 20:48:42] 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 28 total children

全都是这些提示是否是起始服务器太少？这个值弄到多少算ok？怎么去计算这个值呢？

我现在的php-fpm 配置如下
[www]
listen = /tmp/php-cgi.sock
user = www
group = www
pm = dynamic
pm.max_children =200
pm.start_servers = 8
pm.min_spare_servers = 4
pm.max_spare_servers = 100
request_terminate_timeout = 5s
我的cpu是1G单核的，希望军哥给点建议，如何设置比较合理，现在的设置cpu经常跑到100%
而且同时优化数据库所有表常会出现502错误  优化数据库单个表不会出现  是否需要增加服务器内存？谢谢

[ 本帖最后由 superman 于 2013-11-24 12:53 编辑 ]

作者: puffbaby 时间: 2013-11-24 14:25
Mem  是你的内存。假设为1G
pm.max_children = Mem/2/20    =》1024/2/20= 25

pm.start_servers = Mem/2/30    =》 1024/2/30=17

pm.min_spare_servers = Mem/2/40 =》 1024/2/40= 12

pm.max_spare_servers = Mem/2/20  =》 1024/2/20=25

作者: licess 时间: 2013-11-24 14:31
pm.min_spare_servers调到20看看，这个具体也不好说，根据使用情况适当调调
pm.start_servers的话官网建议是min_spare_servers + (max_spare_servers - min_spare_servers) / 2。

502一般都是php-fpm的问题，前面已经说了，开慢日志看看，一般那里执行的慢都会有记录

作者: superman 时间: 2013-11-24 15:03
标题: 回复 4# 的帖子
谢谢，受教了我测试看看

作者: superman 时间: 2013-11-24 15:04
标题: 回复 5# 的帖子
感谢军哥我测试下

作者: superman 时间: 2013-11-24 23:52
标题: 回复 5# 的帖子
军哥，今天测试了一下午发现改成50还是不行的

pm.start_servers = 50
pm.min_spare_servers = 50
pm.max_spare_servers = 100

操作多个表的话还是会报503 现在就是在后台更新下缓存都会报502 Bad Gateway
是不是我数据库数据太多了？还是我内存不够用需要加内存？
开启慢日志里面报的错误都是入口文件执行时间过长比如forum.php home.php这些
希望军哥指点下

[ 本帖最后由 superman 于 2013-11-25 09:52 编辑 ]

作者: licess 时间: 2013-11-25 10:07
看看内存占用swap如果基本没用或用的很少一般不需要升级

可以尝试按置顶帖的要求改改执行时间之类的参数试试，或排查一下插件

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