>I am trying to set the best value for innodb_buffer_pool_size. My system
has 6GB of ram.
>My question: how to tell if my innodb_buffer_pool_size is ok?
If this is a MySQL dedicated server,
In your case I would set it to 2GB-3GB.
You will have the whole data in RAM now and for some time.
>Does Buffer pool hit rate 1000 / 1000 mean that I can lower it?
No. It means it is doing fine. And if you don't need RAM for anything else
why lower it?
>Does Free buffers 0 mean that I should make it larger?
No. InnoDB will always try to allocate each block in the buffer pool.
>Eventually what else to check?
(a) mysql> SELECT engine,sum(data_length)/1024/1024 as
DATA_MB,sum(INDEX_LENGTH)/1024/1024 as INDEX_MB FROM
information_schema.tables GROUP BY engine;
To check the real size of the dataset.
(b) Note: mysql-server-5.0.58 you should upgrade to latest 5.0.96