我一直在绞尽脑汁试图解决这个问题,这个问题每隔几个小时就会出现在我的制作服务器上,在我的制作服务器上托管一个Wordpress博客(流量不错:平均每天有2000个用户实时,5000+在好日子,每分钟的页面浏览量从300到700+不等)。
我用Newrelic来监控性能,我注意到了一件奇怪的事情:
每隔几个小时(随机),PHP池状态如下(昨天获取的实际状态)
pool: www
process manager: static
start time: 02/Jan/2017:05:03:16 -0500
start since: 27290
accepted conn: 1107594
listen queue: 777
max listen queue: 794
listen queue len: 40000
idle processes: 0
active processes: 100
total processes: 100
max active processes: 101
max children reached: 0
slow requests: 0重新启动PHP-FPM和nginx解决了问题,但在几个小时内再次发生。任何帮助都是非常感谢的。请引导我。
服务器设置:
DigitalOcean 48GB Memory
16 Core Processor
480GB SSD DiskPHP池设置:
pm = static
pm.max_children = 100
pm.max_requests = 5000nginx配置:
worker_processes 32;
worker_rlimit_nofile 100000;
events {
worker_connections 40000;
use epoll;
multi_accept on;
}我还在使用xcache,varnish和Wordpress上的W3TC。(也有云彩)
sysctl.conf:
# Increase size of file handles and inode cache
fs.file-max = 2097152
# Do less swapping
vm.swappiness = 10
vm.dirty_ratio = 60
vm.dirty_background_ratio = 2
### GENERAL NETWORK SECURITY OPTIONS ###
# Number of times SYNACKs for passive TCP connection.
net.ipv4.tcp_synack_retries = 2
# Allowed local port range
net.ipv4.ip_local_port_range = 2000 65535
# Protect Against TCP Time-Wait
net.ipv4.tcp_rfc1337 = 1
# Decrease the time default value for tcp_fin_timeout connection
net.ipv4.tcp_fin_timeout = 15
# Decrease the time default value for connections to keep alive
net.ipv4.tcp_keepalive_time = 300
net.ipv4.tcp_keepalive_probes = 5
net.ipv4.tcp_keepalive_intvl = 15
### TUNING NETWORK PERFORMANCE ###
# Default Socket Receive Buffer
net.core.rmem_default = 31457280
# Maximum Socket Receive Buffer
net.core.rmem_max = 12582912
# Default Socket Send Buffer
net.core.wmem_default = 31457280
# Maximum Socket Send Buffer
net.core.wmem_max = 12582912
# Increase number of incoming connections
net.core.somaxconn = 40000
# Increase number of incoming connections backlog
net.core.netdev_max_backlog = 65536
# Increase the maximum amount of option memory buffers
net.core.optmem_max = 25165824
# Increase the maximum total buffer-space allocatable
# This is measured in units of pages (4096 bytes)
net.ipv4.tcp_mem = 65536 131072 262144
net.ipv4.udp_mem = 65536 131072 262144
# Increase the read-buffer space allocatable
net.ipv4.tcp_rmem= 10240 87380 12582912
net.ipv4.udp_rmem_min = 16384
# Increase the write-buffer-space allocatable
net.ipv4.tcp_wmem= 10240 87380 12582912
net.ipv4.udp_wmem_min = 16384
# Increase the tcp-time-wait buckets pool size to prevent simple DOS attacks
net.ipv4.tcp_max_tw_buckets = 1440000
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1发布于 2017-01-18 17:45:37
尝试停止您的NewRelic代理,并等待几个小时,看看这是否解决了问题。如果是,那么尝试将其升级到最新版本。如果升级后返回,请与NewRelic支持部门联系。
检查您的max_execution_time和request_terminate_timeout中的php.ini。
检查Nginx配置中的proxy_connect_timeout、proxy_send_timeout、proxy_read_timeout和send_timeout值。
我建议检查您的TCP/IP设置,看看这些设置是什么作为保持活力和超时设置,那里可能需要减少。我见过一些发行版默认出现了一分钟或更长的时间。
还应验证侦听器的通信量是否有效。查看是否可以将示例输出到文件中,并验证流量是否合法。许多自动化过程在interwebz上寻找Wordpress实例。这些机器人可以引起各种各样的问题,因为他们黑你的网站。
发布于 2017-08-08 06:10:02
您是否在/var/log/nginx/上查看了您的access.log或domain.com.access.log?看到这一点,您将有更多的细节,为什么PHP占用您的CPU。
我认为你的网站对wp-login.php有很大的影响,这消耗了大量的CPU。
https://stackoverflow.com/questions/41438166
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