Take the 2-minute tour ×
Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. It's 100% free, no registration required.

As the title says, I'm wondering what is this command and why am I seeing a large amount of this query on my database? It's currently 13.30% of my total queries. I've tried googling this but there's not really any documentation on the subject.

Here's a part of the report done by mysqlreport:

__ Questions ___________________________________________________________
Total          17.43M     7.5/s
  DMS           8.58M     3.7/s  %Total:  49.23
  QC Hits       3.91M     1.7/s           22.42
  Com_          2.54M     1.1/s           14.54
  COM_QUIT      2.48M     1.1/s           14.21
  -Unknown     68.28k     0.0/s            0.39
Slow 10 s          17     0.0/s            0.00  %DMS:   0.00  Log:  ON
DMS             8.58M     3.7/s           49.23
  SELECT        6.05M     2.6/s           34.71         70.51
  INSERT        1.36M     0.6/s            7.80         15.85
  UPDATE        1.15M     0.5/s            6.60         13.40
  DELETE       20.35k     0.0/s            0.12          0.24
  REPLACE          61     0.0/s            0.00          0.00
Com_            2.54M     1.1/s           14.54
  set_option    2.32M     1.0/s           13.30
  show_proces  83.16k     0.0/s            0.48
  create_tabl  60.20k     0.0/s            0.35
share|improve this question

1 Answer 1

up vote 3 down vote accepted

It probably means that you ran a lot of commands that start with "SET something = somethingelse;"

I would say to set your general_log on for a short while on your dev environment and search for SET commands. It would probably be something to do with setting the server time.


share|improve this answer
Thanks, figured out this was because of SET NAMES utf8. –  onik Sep 14 '11 at 8:13

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.