Upgrading a very old version of Geeklog makes structure of tables change drastically on myisam. Should I run some mysql commands for optimizing the database if it has poor performance after upgrading?

Sure.

Geeklog has some built in optimizations in the Geeklog Database Administration. This includes:

- Converting myisam to innodb
- Optimizing Tables

---

One of the Geeklog Core Developers.

Ok.
I tried it at demo site. It seems running just Mysql's OPTIMIZE TABLE Syntax.
Thanks.