From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx166.postini.com [74.125.245.166]) by kanga.kvack.org (Postfix) with SMTP id 5D3676B004D for ; Sun, 4 Mar 2012 19:46:37 -0500 (EST) Received: by obbta14 with SMTP id ta14so4362424obb.14 for ; Sun, 04 Mar 2012 16:46:36 -0800 (PST) MIME-Version: 1.0 In-Reply-To: References: Date: Mon, 5 Mar 2012 01:46:36 +0100 Message-ID: Subject: Fwd: (un)loadable module support for zcache From: Ilendir Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Cc: ngupta@vflare.org While experimenting with zcache on various systems, we discovered what seems to be a different impact on CPU and power consumption, varying from system to system and workload. While there has been some research effort about the effect of on-line memory compression on power consumption [1], the trade-off, for example when using SSDs or on mobile platforms (e.g. Android), remains still unclear. Therefore it would be desirable to improve the possibilities to study this effects on the example of zcache. But zcache is missing an important feature: dynamic disabling and enabling. This is a big obstacle for further analysis. Since we have to do some free-to-choose work on a Linux related topic while doing an internship at the University in Erlangen, we'd like to implement this feature. Moreover, if we achieve our goal, the way to an unloadable zcache module isn=92t far way. If that is accomplished, one of the blockers to get zcache out of the staging tree is gone. Any advice is appreciated. Florian Schmaus Stefan Hengelein Andor Daam [1] http://ziyang.eecs.umich.edu/~dickrp/publications/yang-crames-tecs.pdf -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org