thread_pool_enabled:线程池开关。 thread_pool_idle_timeout:线程最大空闲时间,超过则退出。 thread_pool_max_threads:线程池最大工作线程数。 thread_pool_oversubscribe:每个 Thread Group 的目标线程数。 thread_pool_normal_weights(相较 percona 新加):查询、更新操作的目标线程比例(假定这两类操作的比重相同),...
thread_pool_enabled:线程池开关。 thread_pool_idle_timeout:线程最大空闲时间,超过则退出。 thread_pool_max_threads:线程池最大工作线程数。 thread_pool_oversubscribe:每个 Thread Group 的目标线程数。 thread_pool_normal_weights(相较 percona 新加):查询、更新操作的目标线程比例(假定这两类操作的比重相同),...
默认值说明1loose_thread_pool_enabledYes是否启用 Thread Pool2loose_thread_pool_oversubscribeYes每个 Thread Group 在出现 Stall Thread 的情况下可以额外同时执行(active)的线程个数;线程池最多可以同时执行(active)的线程数 =(thread_pool_oversubscribe + 1)* thread_pool_size;建议 >=33tloose_thread_pool_s...
thread_pool_enabled:线程池开关。 thread_pool_idle_timeout:线程最大空闲时间,超过则退出。 thread_pool_max_threads:线程池最大工作线程数。 thread_pool_oversubscribe:每个 Thread Group 的目标线程数。 thread_pool_normal_weights(相较 percona 新加):查询、更新操作的目标线程比例(假定这两类操作的比重相同),...
thread_pool_max_transactions_limit. A non-zero value N indicates that the thread pool will not have more than N transactions concurrently executing at any given time. When the Max Transaction Feature is enabled, The Max Transaction Limit can be changed dynamically without needing to restart the ...
主要用于调试,the server uses a single thread to handle one connection One-Thread-Per-Connection the server uses one thread to handle each client connection dynamically-loaded If the thread pool plugin is enabled, the server sets the thread_handling value to dynamicallyloaded. ...
thread_pool_enabled:全局参数,默认值为true。 20240601 20191015 8.0.16 新特性 TDE:支持透明数据加密TDE(Transparent Data Encryption)功能,可对数据文件执行实时I/O加密和解密,数据在写入磁盘之前进行加密,从磁盘读入内存时进行解密。 Returning:Returning功能支持DML语句返回Resultset,同时提供了工具包(DBMS_TRANS)便...
在前几章中,我们解释了模式优化和索引,这对于高性能是必要的。但这还不够——您还需要设计良好的查询。如果您的查询不好,即使是设计最佳的模式和索引也不会表现良好。 查询优化、索引优化和模式优化是相辅相成的。随着在MySQL中编写查询的经验增加,您将学会如何设计表和索引以支持高效的查询。同样,您所学到的关...
Thethread_pool_stall_limitparameter can be changed at runtime to enable you to strike a balance appropriate for the server work load. Assuming that thetp_thread_group_statstable is enabled, you can use the following query to determine the fraction of executed statements that stalled: ...
This variable can be used to specify additional port Percona Server will listen on. This can be used in case no new connections can be established due to all worker threads being busy or being locked when pool-of-threads feature is enabled. ...