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Enabling Efficient OS Paging for Main-Memory OLTP Databases

Enabling Efficient OS Paging for Main-Memory OLTP Databases

陈傲天
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we propose a simple and low-overhead technique that enables main-memory databases to eciently migrate cold data to secondary storage by relying on the OS’s virtual memory paging mechanism. We propose to log accesses at the tuple level, process the access traces o✏ine to identify relevant access patterns, and then transparently re-organize the in-memory data structures to reduce paging I/O and improve hit rates. The hot/cold data separation is performed on demand and incrementally through careful memory management, without any change to the underlying data structures.
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