blob: 3abf6619dace58319beee2be2fba640d02f059d2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
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.
|
