performance_schema_consumer_events_waits_current=on performance_schema_consumer_events_stages_current=on performance_schema_consumer_events_statements_current=on performance_schema_consumer_events_waits_history=on performance_schema_consumer_events_stages_history=on performance_schema_consumer_events_statements_hi...
performance_schema_consumer_events_stages_current=on performance_schema_consumer_events_statements_current=on performance_schema_consumer_events_waits_history=on performance_schema_consumer_events_stages_history=on performance_schema_consumer_events_statements_history=on 即在这些表的前面加上:performance_schema_...
performance_schema_consumer_events_waits_current=onperformance_schema_consumer_events_stages_current=onperformance_schema_consumer_events_statements_current=onperformance_schema_consumer_events_waits_history=onperformance_schema_consumer_events_stages_history=onperformance_schema_consumer_events_statements_history=on...
# 启用特定的消费者 performance_schema_consumer_events_waits_current=ON performance_schema_consumer_events_waits_history=ON performance_schema_consumer_events_waits_history_long=ON performance_schema_consumer_events_stages_current=ON performance_schema_consumer_events_stages_history=ON performance_schema_consum...
对于RDS MySQL 5.6,将performance_schema的运行参数值设置为ON。 重要 对于RDS MySQL 5.7、8.0,当数据库实例满足前提条件即内存大于等于8 GB时,performance_schema参数默认开启,无需手动设置。 对于PolarDB MySQL版,选择集群,并将performance_schema的集群参数设置为ON。 重要 对于PolarDB MySQL版5.6、5.7,请将loose_per...
ON, TRUE, or 1: Enable and time the instrument COUNTED: Enable and count (rather than time) the instrument Each --performance-schema-instrument option can specify only one instrument name, but multiple instances of the option can be given to configure multiple instruments. In addition, pattern...
performance_schema=ON 然后重新启动MySQL服务器,Performance Schema将会被启用。 第四步:如何在PerformanceSchema中收集数据? 一旦Performance Schema被启用,它将开始自动收集和存储相关的性能数据。你可以使用的一些查询和命令来检索和分析这些数据。以下是一些常用的操作: 1.查询性能数据:你可以使用Performance Schema提供的...
The PERFORMANCE_SCHEMA storage engine operates on tables in the performance_schema database. You can make performance_schema the default database so that references to its tables need not be qualified with the database name: mysql> USE performance_schema; ...
performance_schema=ON 这是控制Performance Schema是否启用的开关。自 MySQL 5.7 版本起,默认启用此功能。 performance_schema_digests_size=10000 该变量控制events_statements_summary_by_digest表的最大行数。如果摘要数据超过该行数,将停止记录新的摘要信息。
常用配置项包括启动选项和系统变量，这些选项与performance schema性能监控相关，需要设置performance_schema=ON生效。配置表之间存在相互关联关系，如performance_timers、setup_timers、setup_consumers等表。setup_instruments表管理事件采集器，setup_consumers表管理事件保存器，而setup_actors、setup_objects表则...