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https://dev.mysql.com/doc/refman/5.7/en/information-schema-innodb-buffer-pool-stats-table.html
The INNODB_BUFFER_POOL_STATS table provides much of the same buffer pool information provided in SHOW ENGINE INNODB STATUS output. Much of the same information may also be obtained using InnoDB buffer pool server status variables. The idea of ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-configuring-io-capacity.html
The InnoDB master thread and other threads perform various tasks in the background, most of which are I/O related, such as flushing dirty pages from the buffer pool and writing changes from the change buffer to the appropriate secondary indexes.
https://dev.mysql.com/doc/refman/5.7/en/innodb-limits.html
Attempting to use an index key prefix length that exceeds the limit returns an error. This section describes limits for InnoDB tables, indexes, tablespaces, and other aspects of the InnoDB storage engine. A table can contain a maximum of 1017 ...
https://dev.mysql.com/doc/refman/5.7/en/innodb-performance-midpoint_insertion.html
Rather than using a strict LRU algorithm, InnoDB uses a technique to minimize the amount of data that is brought into the buffer pool and never accessed again. The goal is to make sure that frequently accessed (“hot”) pages remain in the buffer ...
https://dev.mysql.com/doc/refman/5.7/en/monitor-innodb-mutex-waits-performance-schema.html
A mutex is a synchronization mechanism used in the code to enforce that only one thread at a given time can have access to a common resource. When two or more threads executing in the server need to access the same resource, the threads compete ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-config-starting.html
Changes in configuration are also likely to be indicated when changes are made in the platform on which the cluster is run, or in applications that use the NDB Cluster 's data. For these reasons, it is not possible to offer a single configuration ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-logs-cluster-log.html
The following table lists the most common NDB cluster log messages. For information about the cluster log, log events, and event types, see Section 21.6.3, “Event Reports Generated in NDB Cluster”. These log messages also correspond to log ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-ndbinfo-memoryusage.html
Querying this table provides information similar to that provided by the ALL REPORT MemoryUsage command in the ndb_mgm client, or logged by ALL DUMP 1000. The memoryusage table contains the following columns: node_id The node ID of this data node.
https://dev.mysql.com/doc/refman/5.7/en/optimizing-innodb-diskio.html
If you follow best practices for database design and tuning techniques for SQL operations, but your database is still slow due to heavy disk I/O activity, consider these disk I/O optimizations. If the Unix top tool or the Windows Task Manager shows ...
https://dev.mysql.com/doc/refman/5.7/en/repeat.html
[begin_label:] REPEAT statement_list UNTIL search_condition END REPEAT [end_label] The statement list within a REPEAT statement is repeated until the search_condition expression is true. statement_list consists of one or more statements, each ...