uwsgi异常服务器内存cpu爆满

记录线上服务器通过linux性能检测工具glances检测到 cpu、内存爆满，且是uwsgi进程占用，对于服务器内核，以及uwsgi配置优化

参考文章

https://blog.csdn.net/orangleliu/article/details/48531759

uwsgi.log日志报错

Tue Jun  2 17:33:27 2015 - *** uWSGI listen queue of socket "127.0.0.1:9080" (fd: 3) full !!! (101/100) ***

Tue Jun  2 17:33:28 2015 - *** uWSGI listen queue of socket "127.0.0.1:9080" (fd: 3) full !!! (101/100) ***

解决思路：

1.修改内核配置

2.修改uwsgi配置

内核修改

#对于一个经常处理新连接的高负载 web服务环境来说，默认的 128 太小了

net.core.somaxconn = 262144

​#表示SYN队列的长度，默认为1024，加大队列长度为8192，可以容纳更多等待连接的网络连接数

net.ipv4.tcp_max_syn_backlog = 8192

#网卡设备将请求放入队列的长度

net.core.netdev_max_backlog = 65536

修改完成之后要记得 sysctl -p 重新加载内核参数

uwsgi修改

修改uwsgi.ini

listen=1024

重启uwsgi

新版uwsgi配置文件，着实好用

# 缓存体系

cache = true

cache2 = name=mycache,items=100

lazy-apps = true

wsgi-disable-file-wrapper = true

memory-report = true

uid = www

master = true

vhost = true

no-stie = true

workers = 10

reload-mercy = 10

vacuum = true

max-requests = 3500

limit-as = 1024

buffer-size = 65535

pidfile = /var/run/uwsgi.pid

master-fifo = /tmp/uwsgififo

#daemonize = /var/log/logs/uwsgi.log

logto = /var/log/logs/uwsgi.log

log-maxsize = 10000000000

enable-threads=true

die-on-term=true

wsgi-disable-file-wrapper=true

env= LUFFY_ENV=Production

ksm=10

ignore-sigpipe = true

ignore-write-errors = true

disable-write-exception = true

harakiri = 30

thunder-lock = True