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1. show variables like '%profiling%';(查看profiling信息)
2. set profiling=1;(开启profiling)
3. 执行SQL查询 例:select goods_name from ecs_goods where goods_id 4. show profile for query 4;
show profile 的格式如下:
SHOW PROFILE [type [, type] ... ] [FOR QUERY n] [LIMIT row_count [OFFSET offset]] type: ALL| BLOCK IO| CONTEXT SWITCHES| CPU| IPC| MEMORY| PAGE FAULTS| SOURCE| SWAPS bitsCN.com

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