How can I improve my InnoDB performance?
MySQL requires significant memory amounts in order to provide optimal performance. By caching hot datasets, indexes, and ongoing changes, InnoDB is able to provide faster response times and utilize disk IO in a much more optimal way. From a CPU standpoint, faster processors with many cores provide better throughput.
Why is select count slow?
Because all data (including Row Data) is stored in B-Tree indexes, performing a select count(PK_COLUMN) is still a considerable amount of IO (needs to reads all data pages). If you have a secondary index on the PK field, it will be able to perform less IO to perform a count.
How do I increase InnoDB buffer size?
Configuring InnoDB Buffer Pool Size Online The buffer pool size must be equal to or a multiple of innodb_buffer_pool_chunk_size * innodb_buffer_pool_instances . Changing those variable settings requires restarting the server.
How to improve MySQL InnoDB read and write performance?
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.
How to start InnoDB in read only mode?
To start InnoDB in read-only mode, enable the innodb_read_only setting. When this setting is enabled, you can query InnoDB tables where the MySQL data directory is on read-only media.
How to increase read / write threads in MySQL?
You can configure multiple innodb_buffer_pool_instances in MySQL, to increase read/write threads. To further improve InnoDB performance, you can increase the InnoDB buffer pool size, and you can divide the InnoDB buffer pool into multiple regions.
How to enable read only mode in MySQL?
To enable read-only mode for an entire MySQL instance, specify the following configuration options at server startup: If the instance is on read-only media such as a DVD or CD, or the /var directory is not writeable by all: –pid-file= path_on_writeable_media and –event-scheduler=disabled