Linux Page Cache Basics - Thomas-Krenn-Wiki-en

Under Linux, the Page Cache accelerates many accesses to files on non volatile storage. This happens because, when it first reads from or writes to data media like hard drives, Linux also stores data in unused areas of memory, which acts as a cache. If this data is read again later, it can be quickly read from this cache in memory. This article will supply valuable background information about thi

[yyamano]

“The term, Buffer Cache, is often used for the Page Cache. Linux kernels up to version 2.2 had both a Page Cache as well as a Buffer Cache. As of the 2.4 kernel, these two caches have been combined. Today, there is only one cache, the Page Cache”