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Diffstat (limited to 'drivers/staging/zcache/Kconfig')
| -rw-r--r-- | drivers/staging/zcache/Kconfig | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/staging/zcache/Kconfig b/drivers/staging/zcache/Kconfig new file mode 100644 index 000000000000..3abf6619dace --- /dev/null +++ b/drivers/staging/zcache/Kconfig @@ -0,0 +1,31 @@ +config ZCACHE2 + bool "Dynamic compression of swap pages and clean pagecache pages" + depends on CRYPTO=y && SWAP=y && CLEANCACHE && FRONTSWAP && !ZCACHE + select CRYPTO_LZO + default n + help + 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. + +config RAMSTER + bool "Cross-machine RAM capacity sharing, aka peer-to-peer tmem" + depends on CONFIGFS_FS=y && SYSFS=y && !HIGHMEM && ZCACHE2=y + depends on NET + # must ensure struct page is 8-byte aligned + select HAVE_ALIGNED_STRUCT_PAGE if !64_BIT + default n + help + RAMster allows RAM on other machines in a cluster to be utilized + dynamically and symmetrically instead of swapping to a local swap + disk, thus improving performance on memory-constrained workloads + while minimizing total RAM across the cluster. RAMster, like + zcache2, compresses swap pages into local RAM, but then remotifies + the compressed pages to another node in the RAMster cluster. |