Recently I appended zcache to my grub configuration:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash zcache"
But I am at a loss as to whether zcache is working or if I need to do something else. There is a severe lack of information on zcache implementation in Ubuntu and most of what there is, is over three to five years old.
It appears that at some point in the past, cleancache and frontswap "modules" were required for zcache to function, but I suspect that this is no longer the case.
So, other than adding zcache to my command line, is there anything else needed to be done, and how can I verify that zcache is fully functioning in my system?
-Version-
Kernel : Linux 3.13.0-45-generic (i686)
Compiled : #74-Ubuntu SMP Tue Jan 13 19:37:48 UTC 2015
Distribution : Ubuntu 14.04.2 LTS