CONFIG_ZCACHE2: Dynamic compression of swap pages and clean pagecache pages

General informations

The Linux kernel configuration item CONFIG_ZCACHE2:

• prompt: Dynamic compression of swap pages and clean pagecache pages
• type: bool
• depends on: CONFIG_CRYPTO = CONFIG_y && CONFIG_SWAP = CONFIG_y && CONFIG_CLEANCACHE && CONFIG_FRONTSWAP && ! CONFIG_ZCACHE
• defined in drivers/staging/ramster/Kconfig
• found in Linux kernels: 3.7–3.8

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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This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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