Hi Rafal, >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 Regards Claudio
