Mysql自带profiling性能分析工具

 

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