SHOPNC occupies too much CPU and shopnccpu is too high

SHOPNC occupies too much CPU and shopnccpu is too high

Today, a SHOPNC mall suddenly slows down. Check the server and find that MYSQL occupies 181% CPU, and then check the slow query of PHP.

[22-Nov-2016 20:55:41]  [pool www] pid 50624script_filename = /home/xxxx/public_html/mobile/index.php[0x00007fcc47bad470] query() /home/xxx/public_html/core/framework/db/mysqli.php:90[0x00007fcc47bad308] query() /home/xxxx/public_html/core/framework/db/mysqli.php:115[0x00007fcc47bad190] getAll() /home/xxxx/public_html/core/framework/libraries/model.php:651[0x00007fcc47bad070] select() /home/xxxx/public_html/core/framework/libraries/model.php:304[0x00007fcc47bacf78] find() /home/xxxx/public_html/data/model/mb_user_token.model.php:24[0x00007fcc47bace98] getMbUserTokenInfo() /home/xxxx/public_html/data/model/mb_user_token.model.php:31[0x00007fcc47bacd78] getMbUserTokenInfoByToken() /home/xxxx/public_html/mobile/control/control.php:68[0x00007fcc47bacc70] __construct() /home/xxxx/public_html/mobile/control/member_index.php:16[0x00007fcc47bacb48] __construct() /home/xxxx/public_html/core/framework/core/base.php:88[0x00007fcc47baca40] control() /home/xxxx/public_html/core/framework/core/base.php:46[0x00007fcc47bac978] run() /home/xxxx/public_html/mobile/index.php:26

This is used by third-party login. Then I checked the table mb_user_token and found that there was no index. I added an index to the token field to solve the problem.