补充Buffer Pool IO瓶颈的深度挖掘方法：1. 使用events_waits_history_current过滤wait/io/buffer_pool/*事件 2. 关联sys.schema_buffer_pool_stats计算命中率 3. 通过page_load/page_clean事件区分读写压力。新增SQL示例：SELECT thread_id, SUM(CASE WHEN event_name LIKE 'wait/io/buffer_pool/page_load' THEN timer_wait ELSE 0 END) AS read_wait, ...
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