Mysql自带profiling性能分析工具使用分享
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 <5000; show profiles;
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
2. set profiling=1;（开启profiling）
3. 执行SQL查询 例:select goods_name from ecs_goods where goods_id <5000; show profiles;
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
