推荐关注👇下方公众号学习更多Linux、驱动知识！ 在我们进行数据持久化，对文件内容进行落盘处理时，我们时常会使用fsync操作，该操作会将文件关联的脏页(dirty page)数据(实际文件内容及元数据信息)一同写回磁盘。这里提到的脏页(dirty page)即为页缓存(page cache)。

在我们进行数据持久化，对文件内容进行落盘处理时，我们时常会使用fsync操作，该操作会将文件关联的脏页(dirty page)数据(实际文件内容及元数据信息)一同写回磁盘。这里提到的脏页(dirty page)即为页缓存(page cache)。 块缓存(buffer cache)，则是内核为了加速对底层 ...

Let’s look at some basic commands that report on memory usage. The first that probably comes to mind is free. The free command will tell you about used and unused memory and about swap space. Physical ...

Resolving buffer busy wait events in an Oracle database can be vital to your optimization efforts. Insight into the causes of this performance problem is provided in this examination by Oracle guru ...