In addition to Weibo, there is also WeChat
Please pay attention
WeChat public account
Shulou
2025-04-06 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Database >
Share
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!
Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.
Views: 0
*The comments in the above article only represent the author's personal views and do not represent the views and positions of this website. If you have more insights, please feel free to contribute and share.
Continue with the installation of the previous hadoop.First, install zookooper1. Decompress zookoope
"Every 5-10 years, there's a rare product, a really special, very unusual product that's the most un
© 2024 shulou.com SLNews company. All rights reserved.