Compcache: in-memory compressed swapping

Posted by Scott_Ruecker on Jun 11, 2009 4:34 AM EDT
LWN.net; By Nitin Gupta
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The idea of memory compression—compress relatively unused pages and store them in memory itself—is simple and has been around for a long time. Compression, through the elimination of expensive disk I/O, is far faster than swapping those pages to secondary storage. When a page is needed again, it is decompressed and given back, which is, again, much faster than going to swap.

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