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Transcendent memory in a nutshell

Posted Aug 18, 2011 11:39 UTC (Thu) by Velmont (guest, #46433)
Parent article: Transcendent memory in a nutshell

Truly interesting stuff! :-)

But I wonder, what's the difference between compcache and zcache then? Is it only that zcache uses tmem? Are they the same?

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Posted Aug 18, 2011 14:36 UTC (Thu) by djm1021 (subscriber, #31130) [Link]

Compcache was only for swap pages (doesn't handle clean pagecache pages) and required a swap "device" of a fixed size to be pre-configured. So essentially zcache is the next step in the evolution of compcache, using the tmem interface.