Shulou(Shulou.com)05/31 Report--

How to carry out performance analysis of profiling, I believe that many inexperienced people do not know what to do, so this paper summarizes the causes of the problem and solutions, through this article I hope you can solve this problem.

Use profiling, a tool that comes with mysql

1. Check to see if it is open

Mysql > show variables like'% pro%'

+-+ +

| | Variable_name | Value |

+-+ +

| | have_profiling | YES |

| | profiling | OFF |

| | profiling_history_size | 15 |

| | protocol_version | 10 | |

| | proxy_user |

| | slave_compressed_protocol | OFF |

| | stored_program_cache | 256 |

+-+ +

7 rows in set (0.00 sec)

two。 Off by default

Open it.

Set profiling=1

3. Use

Select * from corp_base_par where res_date=330000 limit 1

Mysql > show profiles

+-- +

| | Query_ID | Duration | Query | |

+-- +

| | 1 | 0.00008975 | set profiling=1 |

| | 2 | 0.00088450 | select * from corp_base_par where res_date=330000 limit 1 |

+-- +

2 rows in set (0.00 sec)

Shows the specific time spent on this sql

After reading the above, have you mastered the method of how to perform performance analysis profiling? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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