From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with SMTP id CABA86B005A for ; Tue, 22 Sep 2009 00:58:17 -0400 (EDT) Received: by mail-yw0-f203.google.com with SMTP id 41so4792946ywh.1 for ; Mon, 21 Sep 2009 21:58:25 -0700 (PDT) From: Nitin Gupta Subject: [PATCH 3/3] documentation Date: Tue, 22 Sep 2009 10:26:54 +0530 Message-Id: <1253595414-2855-4-git-send-email-ngupta@vflare.org> In-Reply-To: <1253595414-2855-1-git-send-email-ngupta@vflare.org> References: <1253595414-2855-1-git-send-email-ngupta@vflare.org> Sender: owner-linux-mm@kvack.org To: Greg KH Cc: Andrew Morton , Hugh Dickins , Pekka Enberg , Marcin Slusarz , Ed Tomlinson , linux-kernel , linux-mm , linux-mm-cc List-ID: Short guide on how to setup and use ramzswap. Signed-off-by: Nitin Gupta --- 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 0000000..e9f1619 --- /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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org