diff options
author | Nitin Gupta <ngupta@vflare.org> | 2009-09-22 10:26:54 +0530 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-11 12:23:04 -0800 |
commit | 47f9afb38f0de2f153deea34bf1ef5c778815f2e (patch) | |
tree | 149d256f8a5424a232bf932671151a6741936711 /drivers/staging/ramzswap | |
parent | 306b0c957f3f0e7da6551652abbfe17b560173ce (diff) |
Staging: ramzswap: documentation
Short guide on how to setup and use ramzswap.
Signed-off-by: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/ramzswap')
-rw-r--r-- | drivers/staging/ramzswap/ramzswap.txt | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/drivers/staging/ramzswap/ramzswap.txt b/drivers/staging/ramzswap/ramzswap.txt new file mode 100644 index 000000000000..e9f1619505a0 --- /dev/null +++ b/drivers/staging/ramzswap/ramzswap.txt @@ -0,0 +1,51 @@ +ramzswap: Compressed RAM based swap device +------------------------------------------- + +Project home: http://compcache.googlecode.com/ + +* Introduction + +It creates RAM based block devices which can be used (only) as swap disks. +Pages swapped to these devices are compressed and stored in memory itself. +See project home for use cases, performance numbers and a lot more. + +Individual ramzswap devices are configured and initialized using rzscontrol +userspace utility as shown in examples below. See rzscontrol man page for more +details. + +* Usage + +Following shows a typical sequence of steps for using ramzswap. + +1) Load Modules: + modprobe ramzswap num_devices=4 + This creates 4 (uninitialized) devices: /dev/ramzswap{0,1,2,3} + (num_devices parameter is optional. Default: 1) + +2) Initialize: + Use rzscontrol utility to configure and initialize individual + ramzswap devices. Example: + rzscontrol /dev/ramzswap2 --init # uses default value of disksize_kb + + *See rzscontrol man page for more details and examples* + +3) Activate: + swapon /dev/ramzswap2 # or any other initialized ramzswap device + +4) Stats: + rzscontrol /dev/ramzswap2 --stats + +5) Deactivate: + swapoff /dev/ramzswap2 + +6) Reset: + rzscontrol /dev/ramzswap2 --reset + (This frees all the memory allocated for this device). + + +Please report any problems at: + - Mailing list: linux-mm-cc at laptop dot org + - Issue tracker: http://code.google.com/p/compcache/issues/list + +Nitin Gupta +ngupta@vflare.org |