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OpenResty-1.15.8+nginx-upsync-module-2.1.3版本CPU高 #301

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lizj3624 opened this issue Feb 17, 2022 · 0 comments

lizj3624 commented Feb 17, 2022 •

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环境
OpenResty-1.15.8+nginx-upsync-module-2.1.3
配置比较多
upstream有6500个，upstream中的server有4.5w个
相应的upsync配置

upstream my-ups {
    server 127.0.0.1:11111;

    upsync 127.0.0.1:2379/v2/keys/upstreams/my-ups/ upsync_timeout=6m upsync_interval=30s upsync_type=etcd strong_dependency=off;
    upsync_dump_path /nginx/conf/backend/http-my-ups.conf;
    include /nginx/conf/backend/http-my-ups.conf;

    #check interval=5000 rise=1 fall=2 timeout=1000 type=tcp default_down=false;
}

启动后每个worker的CPU使用率到90%，但是这时候没有任何请求量

perf查看一下，inet_hash_connect比较高，感觉有大量的tcp连接，把端口占满了

ss -s

Total: 142109 (kernel 142711)
TCP:   142363 (estab 99721, closed 5000, orphaned 58, synrecv 0, timewait 375/0), ports 64512

Transport Total     IP        IPv6
*	  142711    -         -
RAW	  0         0         0
UDP	  8         7         1
TCP	  137363    137359    4
INET	  137371    137366    5
FRAG	  0         0         0

感觉大量upstream时，这个模块有问题

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