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https://dev.mysql.com/doc/refman/8.0/en/innodb-configuring-io-capacity.html
If the value is too high, data is removed from the buffer pool and change buffer too quickly for caching to provide a significant benefit. For busy systems capable of higher I/O rates, you can set a higher value to help the server handle the ... The ...
https://dev.mysql.com/doc/refman/8.0/en/connection-interfaces.html
To accommodate a large number of simultaneous connections, the stack size per thread must be kept small, leading to a situation where it is either too small or the server consumes large amounts of memory. In this connection thread model, there are ... This section describes aspects of how the MySQL server manages client ...
https://dev.mysql.com/doc/refman/8.0/en/optimizing-innodb-logging.html
Thus, if you have transactions that update, insert, or delete many rows, making the log buffer larger saves disk I/O. If you specify a value for innodb_log_write_ahead_size that is larger than the innodb_page_size value, the ... Consider the ...When ...
https://dev.mysql.com/doc/refman/8.0/en/create-table.html
You need to set this only for large tables with variable-size rows. (See Section 7.1.8, “Server System Variables”.) If you want all your tables to be able to grow above the default limit and are willing to have your tables slightly slower and ...
https://dev.mysql.com/doc/refman/8.0/en/added-deprecated-removed.html
binlog_transaction_dependency_history_size: Number of row hashes kept for looking up transaction that last updated some row. group_replication_communication_max_message_size: Maximum message size for Group Replication communications, larger messages ...Innodb_redo_log_capacity_resized: Redo log capacity after the last completed capacity resize ... Options and Variables Introduced in MySQL 8.0 Options and Variables Deprecated in MySQL 8.0 Options and Variables Removed in MySQL 8.0 This section lists server variables, status variables, and ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-api-definition.html
Most scans are performed in parallel to protect the MySQL Server from receiving too much data from many nodes in parallel; this parameter sets a limit to the total batch size over all nodes. If you plan to deploy a large number of data nodes, it is ... The [mysqld] and [api] sections in the config.ini file define the behavior of the MySQL servers (SQL nodes) and other applications (API nodes) used to access cluster ...
https://dev.mysql.com/doc/refman/8.0/en/mysqldump.html
With large data sizes, even if the backup step takes a reasonable time, restoring the data can be very slow because replaying the SQL statements involves disk I/O for insertion, index creation, and so on. For large-scale backup and restore, a ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-limitations.html
Limits on Transaction Size If an individual transaction results in message contents which are large enough that the message cannot be copied between group members over the network within a 5-second window, members can be suspected of having failed, ... Limit on Group Size Limits on Transaction Size The following known limitations exist for Group ...Note that the limitations and issues described for multi-primary mode groups can also apply in single-primary mode clusters during ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-system-variables.html
performance_schema_accounts_size Command-Line Format --performance-schema-accounts-size=# System Variable performance_schema_accounts_size Scope Global Dynamic No SET_VAR Hint Applies No Type Integer Default Value -1 (signifies autoscaling; do not ...The Performance Schema automatically sizes the values of several of its parameters at server startup if they are not set ...Performance Schema system variables have the following meanings: performance_schema Command-Line Format --performance-schema[={OFF|ON}] System Variable performance_schema Scope Global Dynamic No SET_VAR Hint Applies ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-params-ndbd.html
IndexStatTriggerScale: Scale down IndexStatTriggerPct by this amount, multiplied by base 2 logarithm of index size, for large index. BackupMaxWriteSize: Maximum size of file system writes made by backup (in bytes). BackupWriteSize: Default size of ... The listings in this section provide information about parameters used in the [ndbd] or [ndbd default] sections of a config.ini file for configuring NDB Cluster data ...