Comment # 6 on bug 852477 from Kristyna Streitova

According to my measurements turning off Performance Schema is enough to
decrease memory usage:

#table_definition_cache=400
#performance_schema=OFF
memory usage: ~250 000

#table_definition_cache=400
performance_schema=OFF
memory usage: ~39 000

table_definition_cache=400
#performance_schema=OFF
memory usage: ~93 000

table_definition_cache=400
performance_schema=OFF
memory usage: ~39 000


Only MySQL is affected by this issue as MariaDB has table_definition_cache=400
and performance_schema=OFF by default.

Created a pull request on mysql-packaging:
https://github.com/openSUSE/mysql-packaging/pull/12