MySQL read/Write very slow in a table because of long blob columns (2 replies)

In my DB a table contains 20 long-blob columns(columns can't be moved in another table) Each row contains a data size of 0.55 MB approximately. i created indexes on that table but it doesn't improve the performance.We need to store more than 1 million records in this table so i am planning to partition this table. My question is whether Partitioning will improve the performance or not (Read/Write)?

Can anybody help me on this how to improve it.Suggest if any alternate way to improve.