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CONFIG_ZCACHE2: Dynamic compression of swap pages and clean pagecache pages

General informations

The Linux kernel configuration item CONFIG_ZCACHE2:

Help text

Zcache2 doubles RAM efficiency while providing a significant performance boosts on many workloads. Zcache2 uses compression and an in-kernel implementation of transcendent memory to store clean page cache pages and swap in RAM, providing a noticeable reduction in disk I/O. Zcache2 is a complete rewrite of the older zcache; it was intended to be a merge but that has been blocked due to political and technical disagreements. It is intended that they will merge again in the future. Until then, zcache2 is a single-node version of ramster.

Hardware

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