Contents
How to change InnoDB buffer pool size in MySQL?
You need to restart your mysql server to have it’s effect in action. As of MySQL 5.7.5, the innodb_buffer_pool_size configuration option can be set dynamically using a SET statement, allowing you to resize the buffer pool without restarting the server. For example:
How big should the chunk size be in InnoDB?
Chunk size is defined by the innodb_buffer_pool_chunk_size configuration option, which has a default of 128M. For more information, see Configuring InnoDB Buffer Pool Chunk Size . Buffer pool size must always be equal to or a multiple of innodb_buffer_pool_chunk_size * innodb_buffer_pool_instances . If you configure innodb_buffer_pool_size
How to increase buffer size in MySQL 5.1?
I am trying to increase the size of the innodb_buffer_pool_size in MySQL 5.1 as I keep running into the following error indicating I have run out of space for the table locks. I have gone through the documentation and from what I gather, I need to update innodb_buffer_pool_size in the /etc/my.cnf file. My current value is 8M.
How long does it take to initialize a buffer pool?
The time to initialize the buffer pool is roughly proportional to its size. On large installations, this initialization time may be significant. For example, on a modern Linux x86_64 server, initialization of a 10GB buffer pool takes approximately 6 seconds. See Section 8.9.1, “The InnoDB Buffer Pool”.
What is the size of a buffer in InnoDB?
innodb_buffer_pool_chunk_size is 128M, which is the default value. 8G is a valid innodb_buffer_pool_size value because 8G is a multiple of innodb_buffer_pool_instances=16 * innodb_buffer_pool_chunk_size=128M, which is 2G.
What is the default buffer size in MySQL?
In this example, innodb_buffer_pool_size is set to 9G, and innodb_buffer_pool_instances is set to 16 . innodb_buffer_pool_chunk_size is 128M, which is the default value.
How to check progress of buffer pool resizing?
Buffer pool resizing progress is also logged in the server error log. This example shows notes that are logged when increasing the size of the buffer pool: [Note] InnoDB: Resizing buffer pool from 134217728 to 4294967296. (unit=134217728) [Note] InnoDB: disabled adaptive hash index.