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How big is the InnoDB buffer pool in MariaDB?
Description: If innodb_buffer_pool_size is set to more than 1GB, innodb_buffer_pool_instances divides the InnoDB buffer pool into this many instances. The default was 1 in MariaDB 5.5, but for large systems with buffer pools of many gigabytes, many instances can help reduce contention concurrency.
How to abort buffer pool restore in InnoDB?
A buffer pool restore, both at startup or at any other moment, can be aborted by setting innodb_buffer_pool_load_abort to ON. The file which contains the buffer pool dump is specified via the innodb_buffer_pool_filename system variable.
Why does InnoDB take so long to shut down?
Sometimes a MySQL server running InnoDB takes a long time to shut down. The usual culprit is flushing dirty pages from the buffer pool. These are pages that have been modified in memory, but not on disk.
What’s the default buffer size in MariaDB 10?
The default is 8 in MariaDB 10 (except on Windows 32-bit, where it varies according to innodb_buffer_pool_size, or from MariaDB 10.2.2]
When to use InnoDB instead of XtraDB in MariaDB?
From MariaDB 10.0.1 to MariaDB 10.0.8, when InnoDB was the default instead of XtraDB, this variable needed to be set. Usually used in conjunction with the plugin-load=innodb=ha_innodb option to use the InnoDB plugin.
How is the maximum checkpoint age determined in InnoDB?
Description: Determines the method of flushing dirty blocks from the InnoDB buffer pool. If set to native or 0, the original InnoDB method is used. The maximum checkpoint age is determined by the total length of all transaction log files. When the checkpoint age reaches the maximum checkpoint age, blocks are flushed.
How does the InnoDB adaptive hash index help performance?
Based on performance testing ( MDEV-17492 ), the InnoDB adaptive hash index helps performance in mostly read-only workloads, and could slow down performance in other environments, especially DROP TABLE, TRUNCATE TABLE, ALTER TABLE, or DROP INDEX operations. Description: Specifies the number of partitions for use in adaptive searching.