Mysql Slow Insert

Question

I have the following InnoDB table:

+-----------+-----------+------+-----+-------------------+----------------+
| Field     | Type      | Null | Key | Default             


        

Answer 1

If you are running in a cluster enviroment, auto-increment columns may slow inserts. Try tweaking ndb_autoincrement_prefetch_sz (see http://dev.mysql.com/doc/refman/5.1/en/mysql-cluster-system-variables.html#sysvar_ndb_autoincrement_prefetch_sz)