Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760461AbZAOAzV (ORCPT ); Wed, 14 Jan 2009 19:55:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759313AbZAOAyh (ORCPT ); Wed, 14 Jan 2009 19:54:37 -0500 Received: from rv-out-0506.google.com ([209.85.198.231]:29942 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759008AbZAOAyg (ORCPT ); Wed, 14 Jan 2009 19:54:36 -0500 From: =?utf-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= To: greg@kroah.com Cc: Alan Cox , Pavel Machek , Brian Swetland , San Mehat , Robert Love , linux-kernel@vger.kernel.org, =?utf-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= Subject: [PATCH] Staging: android: Add lowmemorykiller documentation. Date: Wed, 14 Jan 2009 16:54:16 -0800 Message-Id: <1231980856-30600-1-git-send-email-arve@android.com> X-Mailer: git-send-email 1.6.1 In-Reply-To: <20090115001224.GC11328@kroah.com> References: <20090115001224.GC11328@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1667 Lines: 36 Signed-off-by: Arve Hjønnevåg --- drivers/staging/android/lowmemorykiller.txt | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) create mode 100644 drivers/staging/android/lowmemorykiller.txt diff --git a/drivers/staging/android/lowmemorykiller.txt b/drivers/staging/android/lowmemorykiller.txt new file mode 100644 index 0000000..bd5c0c0 --- /dev/null +++ b/drivers/staging/android/lowmemorykiller.txt @@ -0,0 +1,16 @@ +The lowmemorykiller driver lets user-space specify a set of memory thresholds +where processes with a range of oom_adj values will get killed. Specify the +minimum oom_adj values in /sys/module/lowmemorykiller/parameters/adj and the +number of free pages in /sys/module/lowmemorykiller/parameters/minfree. Both +files take a comma separated list of numbers in ascending order. + +For example, write "0,8" to /sys/module/lowmemorykiller/parameters/adj and +"1024,4096" to /sys/module/lowmemorykiller/parameters/minfree to kill processes +with a oom_adj value of 8 or higher when the free memory drops below 4096 pages +and kill processes with a oom_adj value of 0 or higher when the free memory +drops below 1024 pages. + +The driver considers memory used for caches to be free, but if a large +percentage of the cached memory is locked this can be very inaccurate +and processes may not get killed until the normal oom killer is triggered. + -- 1.6.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/