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thundering_herd_problem

主要写了三个例子,server_accept.cpp和server_epoll.cpp分别验证accept和epoll的惊群问题,server_epoll_thp.cpp是仿照nginx避免惊群的方式的一个简单实现。更多说明见nginx如何解决惊群效应

get start

g++ -o server_accept server_accept.cpp -pthread -g
g++ -o server_epoll server_epoll.cpp -pthread -g
g++ -o server_epoll_thp server_epoll_thp.cpp -pthread -g

usage: ./server_*** [-i ip] [-p port] [-ap] [-n proc_num]
-a set reuse addr
-p set reuse port
-i set bind addr, default value is INADDR_ANY
-p set bind port, default value is 9000
-n set process num, default value is 1

test

  • accept
    ./server_accept -n 2 -a
    ab -c 1 -n 5 127.0.0.1:9000/

  • epoll
    ./server_epoll -n 2 -a
    ab -c 1 -n 5 127.0.0.1:9000/

  • epoll_thp
    ./server_epoll -n 2 -a
    ab -c 1 -n 5 127.0.0.1:9000/

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