From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757035AbZA1XbY (ORCPT ); Wed, 28 Jan 2009 18:31:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756926AbZA1X2Q (ORCPT ); Wed, 28 Jan 2009 18:28:16 -0500 Received: from kroah.org ([198.145.64.141]:56990 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756908AbZA1X2O (ORCPT ); Wed, 28 Jan 2009 18:28:14 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: =?utf-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= , Greg Kroah-Hartman Subject: [PATCH 06/10] Staging: android: Add lowmemorykiller documentation. Date: Wed, 28 Jan 2009 15:26:46 -0800 Message-Id: <1233185210-23098-6-git-send-email-gregkh@suse.de> X-Mailer: git-send-email 1.6.1 In-Reply-To: <20090128232319.GA23009@kroah.com> References: <20090128232319.GA23009@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 From: Arve Hjønnevåg Signed-off-by: Arve Hjønnevåg Signed-off-by: Greg Kroah-Hartman --- 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. + -- 1.6.0.2