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