How to increase the size of the InnoDB buffer?
Configuring InnoDB Buffer Pool Chunk Size innodb_buffer_pool_chunk_size can be increased or decreased in 1MB (1048576 byte) units but can only be modified at startup, in a command line string or in a MySQL configuration file.
What should the buffer pool size be in MySQL?
Buffer pool size must always be equal to or a multiple of innodb_buffer_pool_chunk_size * innodb_buffer_pool_instances.
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 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.
Where is the buffer pool located in InnoDB?
The buffer pool is an area in main memory where InnoDB caches table and index data as it is accessed. The buffer pool permits frequently used data to be accessed directly from memory, which speeds up processing. On dedicated servers, up to 80% of physical memory is often assigned to the buffer pool.
What was buffer pool 0 in MySQL 5.7?
[Note] InnoDB: buffer pool 0 : withdrew 253952 blocks from free list. tried to relocate 0 pages. (253952/253952) [Note] InnoDB: buffer pool 0 : withdrawn target 253952 blocks. [Note] InnoDB: buffer pool 0 : 31 chunks (253952 blocks) was freed.
How big should InnoDB buffer pool be in MySQL?
Start MySQL With 10GB Innodb buffer pool for example and see how large RSS and VSZ get in “ps” output on Unix Systems. If it gets to 12GB when you need 2GB for other stuff, and you can increase it a bit to be on the safe size and scale appropriately.
When to split the InnoDB buffer pool in MariaDB?
The functionality described below was disabled in MariaDB 10.5, and removed in MariaDB 10.6, as the original reasons for for splitting the buffer pool have mostly gone away. If innodb_buffer_pool_size is set to more than 1GB, innodb_buffer_pool_instances divides the InnoDB buffer pool into a specific number of instances.
For best efficiency, specify a combination of innodb_buffer_pool_instances and innodb_buffer_pool_size so that each buffer pool instance is at least 1 gigabyte. In MySQL versions prior to 5.5.4 this was not configurable and thus set to just one instance.
How to improve InnoDB performance in MySQL 5.5.4?
MariaDB/MySQL 5.5.4 introduces new configuration settings for the InnoDB storage engine. This can greatly improve MySQL’s InnoDB performance, both in read and write operations. One of those settings is innodb_buffer_pool_instances. The innodb_buffer_pool_instances divides the InnoDB buffer pool into separate instances.