From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx142.postini.com [74.125.245.142]) by kanga.kvack.org (Postfix) with SMTP id 73DB96B0062 for ; Fri, 28 Dec 2012 17:51:34 -0500 (EST) Received: by mail-pa0-f42.google.com with SMTP id rl6so6291452pac.1 for ; Fri, 28 Dec 2012 14:51:33 -0800 (PST) Date: Fri, 28 Dec 2012 14:48:01 -0800 From: Anton Vorontsov Subject: Re: [announce] Timeout Based User-space Low Memory Killer Daemon Message-ID: <20121228224800.GA14273@lizard.sbx05280.losalca.wayport.net> References: <201212281527.43430.b.zolnierkie@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <201212281527.43430.b.zolnierkie@samsung.com> Sender: owner-linux-mm@kvack.org List-ID: To: Bartlomiej Zolnierkiewicz Cc: linux-mm@kvack.org, Kyungmin Park , John Stultz On Fri, Dec 28, 2012 at 03:27:43PM +0100, Bartlomiej Zolnierkiewicz wrote: > > Hi, > > I would like to announce the first public version of my timeout based > user-space low memory killer daemon (tbulmkd). It is based on idea > that user-space applications can be divided into two classes, > foreground and background ones. Foreground processes are visible in > graphical user interface (GUI) and therefore shouldn't be terminated > first when memory usage gets too high. OTOH background processes are > no longer visible in GUI and are pro-actively being killed to keep > overall memory usage smaller. Actual daemon implementation is heavily > based on the user-space low memory killer daemon (ulmkd) from Anton > Vorontsov (http://thread.gmane.org/gmane.linux.kernel.mm/84302). > > The program is available at: > > https://github.com/bzolnier/tbulmkd Wow, that's so great. Now it seems more like an Activity Manager. I didn't look very close to it, but I see that you extensively use cgroups to actually group the processes, i.e. 'daemons' cgroup, 'apps' cgroup. So, it might be a very good start for truly cross-platform, truly generic way to implement Activity Manager. :) I'm surely interested in how it evolves, and will take a closer look soon. Thanks! > kernel/add-tbulmkd-entries.patch needs to be applied to the kernel > that would be used with tbulmkd. It adds /proc/$pid/activity and > /proc/$pid/activity_time files. Write '0' to activity file to mark > the process as background one and '1' (the default value) to mark > it as foreground one. Please note that this interface is just for > a demonstration of tbulmkd functionality and will be changed in > the future. > > Best regards, > -- > Bartlomiej Zolnierkiewicz > Samsung Poland R&D Center -- 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