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https://dev.mysql.com/doc/refman/9.7/en/innodb-performance-spin_lock_polling.html
InnoDB mutexes and rw-locks are typically reserved for short intervals. On a multi-core system, it can be more efficient for a thread to continuously check if it can acquire a mutex or rw-lock for a period of time before it sleeps. If the mutex or ...
https://dev.mysql.com/doc/refman/9.7/en/keywords.html
Certain keywords, such as SELECT, DELETE, or BIGINT, are reserved and require special treatment for use as identifiers such as table and column names. This may also be true for the names of built-in functions. Some keywords which are otherwise ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-shm-definition.html
Communications between NDB cluster nodes are normally handled using TCP/IP. The shared memory (SHM) transporter is distinguished by the fact that signals are transmitted by writing in memory rather than on a socket. The shared-memory transporter ...
https://dev.mysql.com/doc/refman/9.7/en/group-replication-flow-control-stats-component.html
The Group Replication Flow Control Statistics component (component_group_replication_flow_control_stats) enables a number of global status variables which provide information on Group Replication flow control execution. Purpose: Support Group ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-programs-ndbd.html
The ndbd binary provides the single-threaded version of the process that is used to handle all the data in tables employing the NDBCLUSTER storage engine. This data node process enables a data node to accomplish distributed transaction handling, ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-programs-ndb-mgmd.html
The management server is the process that reads the cluster configuration file and distributes this information to all nodes in the cluster that request it. Management clients can connect to the management server and check the cluster's status. All ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-params-other.html
The listings in this section provide information about parameters used in the [computer], [tcp], and [shm] sections of a config.ini file for configuring NDB Cluster. For detailed descriptions and additional information about individual parameters, ...
https://dev.mysql.com/doc/refman/9.7/en/audit-log-component-file-formats.html
The MySQL server calls the audit log component to write an audit record to its log file whenever an auditable event occurs. Typically the first audit record written after component startup contains the server description and startup options.
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-ndbinfo-tc-time-track-stats.html
The tc_time_track_stats table provides time-tracking information obtained from the DBTC block (TC) instances in the data nodes, through API nodes access NDB. Each TC instance tracks latencies for a set of activities it undertakes on behalf of API ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-ndbinfo-cpudata-1sec.html
The cpudata_1sec table provides data about CPU usage per second over the last 20 seconds.