Low performance in Mysql 5.6.12 -


i have table 30 columns, , add 1 column table. in mysql 5.6.12 operation takes 0.7 seconds, when in mysql 5.0.51 takes more more smaller.

the whole database takes 2.7 mb. ues innodb. settings default.

could tell me why in mysql 5.6.12 altering queries executed slowly? there tweak related this? maybe there known bug related issue?

any appreciated!

please check following points

  • how many rows there in table ?
  • is there default assignment being done when new column getting added ?
  • check space available in data directory of mysql-5.6 , compare mysql-5.5 installation 'data' directory.
  • check steps followed migrate/upgrade mysql-5.5 mysql-5.6 ? may wrong there.

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