作为Comate,一个智能编程助手,我将基于你提供的问题和tips来详细解答关于MySQL Buffer Pool利用率过低的问题。 1. 确认MySQL的Buffer Pool配置情况 首先,我们需要查看当前MySQL的Buffer Pool配置。可以通过以下SQL命令来查询: sql SHOW VARIABLES LIKE 'innodb_buffer_pool_size'; 这个命令会返回当前InnoDB Buffer Pool...
Innodb_buffer_pool_pages_total: Buffer pool 中的 page 总量,可以从"服务器状态变量"获取 Buffer pool utilization: Buffer pool 的 page 使用率,可以从"服务器状态变量"获取基本信息,然后通过计算得到使用率 Innodb_buffer_pool_read_requests: 向 Buffer pool 发起的查询数量,可以从"服务器状态变量"获取 Innodb...
-- 计算缓冲池利用率SELECTCONCAT(ROUND((1-(innodb_buffer_pool_pages_free/innodb_buffer_pool_pages_total))*100,2),'%')ASbuffer_pool_utilizationFROMinformation_schema.INNODB_BUFFER_POOL_STATS; 1. 2. 3. 三、总结 通过以上步骤,你可以轻松地实现“mysql innodb_buffer_pool 缓冲池利用率计算公式”。...
mysql.innodb.buffer_pool_free mysql.innodb.buffer_pool_total mysql.innodb.buffer_pool_used mysql.innodb.buffer_pool_utilization MySQL 进程数,最大连接数 threads_connected 当前客户端已连接的数量。这个值会少于预设的值,但你也会监控到这个值较大,它可保证客户端是处在活跃状态。如果 threads_connected ==...
Innodb_buffer_pool_read_requests * 100% 1. 2. 3. 4. 5. 如果数据库从磁盘进行大量读取,而缓冲池还有许多闲置空间,这可能是因为缓存最近才清理过,还处于预热阶段。 总结 Innodb_buffer_pool_pages_total BP中总页面数 Buffer pool utilization BP中页面的使用率 ...
1.Configuring Multiple Buffer Pool Instances 【目的是未来提高并发,减少竞争】 For systems with buffer pools in the multi-gigabyte range, dividing the buffer pool into separate instances can improve concurrency, by reducing contention as different threads read and write to cached pages. This feature is...
Innodb_buffer_pool_read_requests * 100% 如果数据库从磁盘进行大量读取,而缓冲池还有许多闲置空间,这可能是因为缓存最近才清理过,还处于预热阶段。 总结 Innodb_buffer_pool_pages_total BP中总页面数 Buffer pool utilization BP中页面的使用率 Innodb_buffer_pool_read_requests BP的读请求 ...
For systems with extreme load spikes or log files that do not provide a lot of space, a smaller value allows flushing to closely track workload changes, and helps to avoid reaching 75% log space utilization. Be aware that if flushing falls behind, the rate of buffer pool flushing can ...
so adaptive flushing responds more slowly. When setting a high value it is important to ensure that redo log utilization does not reach 75% (the hardcoded limit at which asynchronous flushing starts), and that theinnodb_max_dirty_pages_pctthreshold keeps the number of dirty pages to a level ...
mysql.innodb.buffer_pool_utilization fractions InnoDB 的缓冲池的利用率 mysql.innodb.current_row_locks locks The number of current row locks. mysql.innodb.data_reads reads/second 数据的读取速率 (读的次数/s) mysql.innodb.data_writes writes/second 数据的写速率 (写的次数/s) mysql.innodb.mutex_...