81 lines
2.4 KiB
C++
81 lines
2.4 KiB
C++
/**
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* @file open_close_connections.cpp Simple test which creates load which is very short sessions
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*
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* - 20 threads are opening and immediatelly closing connection in the loop
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*/
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#include "testconnections.h"
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#include <atomic>
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#include <vector>
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std::atomic<bool> run {true};
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void query_thread(TestConnections& test, int thread_id)
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{
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uint64_t i = 0;
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auto validate = [&](MYSQL* conn){
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unsigned int port = 0;
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const char* host = "<none>";
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mariadb_get_infov(conn, MARIADB_CONNECTION_PORT, &port);
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mariadb_get_infov(conn, MARIADB_CONNECTION_HOST, &host);
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test.expect(mysql_errno(conn) == 0 || errno == EADDRNOTAVAIL,
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"Error opening conn to %s:%u, thread num is %d, iteration %ld, error is: %s\n",
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host, port, thread_id, i, mysql_error(conn));
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mysql_close(conn);
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};
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// Keep running the test until we exhaust all available ports
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while (run && test.global_result == 0 && errno != EADDRNOTAVAIL)
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{
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validate(test.maxscales->open_rwsplit_connection(0));
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validate(test.maxscales->open_readconn_master_connection(0));
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validate(test.maxscales->open_readconn_slave_connection(0));
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i++;
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}
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}
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int main(int argc, char* argv[])
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{
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TestConnections test(argc, argv);
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// Tuning these kernel parameters removes any system limitations on how many
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// connections can be created within a short period
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test.maxscales->ssh_node_f(0,
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true,
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"sysctl net.ipv4.tcp_tw_reuse=1 net.ipv4.tcp_tw_recycle=1 "
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"net.core.somaxconn=10000 net.ipv4.tcp_max_syn_backlog=10000");
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test.repl->execute_query_all_nodes((char*) "set global max_connections = 50000;");
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test.repl->sync_slaves();
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std::vector<std::thread> threads;
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constexpr int threads_num = 20;
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for (int i = 0; i < threads_num; i++)
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{
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threads.emplace_back(query_thread, std::ref(test), i);
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}
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constexpr int run_time = 10;
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test.tprintf("Threads are running for %d seconds", run_time);
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for (int i = 0; i < run_time && test.global_result == 0; i++)
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{
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sleep(1);
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}
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run = false;
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for (auto& a : threads)
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{
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a.join();
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}
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test.check_maxscale_alive(0);
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return test.global_result;
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}
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