程序连接数据库响应慢！是Thread pool参数捣的鬼吗？

| innodb_thread_sleep_delay | 10000 |

| innodb_write_io_threads | 4 |

| max_delayed_threads | 20 |

| max_insert_delayed_threads | 20 |

| myisam_repair_threads | 1 |

| performance_schema_max_thread_classes | 50 |

| performance_schema_max_thread_instances | -1 |

| pseudo_thread_id | 8735851 |

| thread_cache_size | 128 |

| thread_concurrency | 24 |

| thread_handling | pool-of-threads |

| thread_pool_high_prio_mode | transactions |

| thread_pool_high_prio_tickets | 4294967295 |

| thread_pool_idle_timeout | 60 |

| thread_pool_max_threads | 100000 |

| thread_pool_oversubscribe | 40 |

| thread_pool_size | 12 |

| thread_pool_stall_limit | 500 |

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