•Table_locks_immediate
The number of times that a request for a table lock could be granted immediately.
•Table_locks_waited
The number of times that a request for a table lock could not be granted immediately and a wait was needed. If this is high and you have performance problems, you should first optimize your queries, and then either split your table or tables or use replication.
实际上应该关心的是Table_locks_waited的值
这是我们服务器上的一个值
mysql> show global status like 'table%';
+-----------------------+---------+
| Variable_name | Value |
+-----------------------+---------+
| Table_locks_immediate | 1147514 |
| Table_locks_waited | 135 |
+-----------------------+---------+
http://blog.haohtml.com/archives/4760