How do I set the buffer pool size in MySQL?
This will give you the RIBPS, Recommended InnoDB Buffer Pool Size, based on all InnoDB Data and Indexes, with an additional 60%. After the restart, run MySQL for a week or two. Then, run this query: SELECT (PagesData*PageSize)/POWER(1024,3) DataGB FROM (SELECT variable_value PagesData FROM information_schema.
What is MySQL buffer pool size?
InnoDB buffer pool is the memory space that holds many in-memory data structures of InnoDB, buffers, caches, indexes and even row-data. innodb_buffer_pool_size is the MySQL configuration parameter that specifies the amount of memory allocated to the InnoDB buffer pool by MySQL.
What should be the size of InnoDB buffer pool?
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 .
How do I know my InnoDB size?
The usage of the InnoDB Buffer Pool can be measured with the SHOW GLOBAL STATUS LIKE ‘Innodb_buffer_pool_pages_%’ command. The sum of data, misc and free pages is equivalent to total pages. And the number of total pages multiplied by Innodb_page_size corresponds to your innodb_buffer_pool_size.
How big is the buffer pool in MySQL?
As, per config file innodb_buffer_pool_size is set 300M and innodb_buffer_pool_instances is set to 1 (no need, as buffer pool is < 1G). error log file also confirms that buffer pool is set to 300.0M
How to set global InnoDB _ buffer _ pool _ size?
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: Buffer pool size must always be equal to or a multiple of innodb_buffer_pool_chunk_size * innodb_buffer_pool_instances.
How to increase or decrease the buffer pool size?
For additional information about configuring buffer pool size online, see Configuring InnoDB Buffer Pool Size Online . When increasing or decreasing innodb_buffer_pool_size, the operation is performed in chunks. Chunk size is defined by the innodb_buffer_pool_chunk_size configuration option, which has a default of 128M.
When to use buffer pool extension in SQL Server?
APPLIES TO: SQL Server Azure SQL Database Azure Synapse Analytics (SQL DW) Parallel Data Warehouse Introduced in SQL Server 2014 (12.x), the buffer pool extension provides the seamless integration of a nonvolatile random access memory (that is, solid-state drive) extension to the Database Engine buffer pool to significantly improve I/O throughput.