From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?B?UmFsZiBSw7ZzY2g=?= Subject: Memory leak in 3.4.x-rt ? Date: Fri, 24 Aug 2012 14:38:11 +0200 Message-ID: <503775B3.4080504@cantastic.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit To: linux-rt-users@vger.kernel.org Return-path: Received: from rs1.rw-gmbh.net ([213.239.201.58]:50230 "EHLO rs1.rw-gmbh.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757771Ab2HXNPb (ORCPT ); Fri, 24 Aug 2012 09:15:31 -0400 Received: from p50992dee.dip0.t-ipconnect.de ([80.153.45.238] helo=[192.168.178.112]) by rs1.rw-gmbh.net with esmtpsa (TLS1.0:DHE_RSA_CAMELLIA_256_CBC_SHA1:256) (Exim 4.80) (envelope-from ) id 1T4t9k-0005S5-FL for linux-rt-users@vger.kernel.org; Fri, 24 Aug 2012 14:38:32 +0200 Sender: linux-rt-users-owner@vger.kernel.org List-ID: Hi, we work on our TX4938 (Toshiba Mips, little endian mode) based embedded system (motion control) running successfully a 3.2 RT patched kernel for month now. I just give a try to a 3.4 RT patched kernel and detected a memory problem as you can see from the logs below: 3.2 with RT FULL PREEMPT is o.k 3.4 without RT FULL PREEMPT is .ok. 3.4 with RT FULL PREEMPT is not o.k. Can anyone give me hint in which direction I could go to detect the problem or has anyone else the same problem? Thanks and regards Ralf Linux MCU 3.2.27-rt40-00027-g8fd8396 #36 PREEMPT RT Mon Aug 20 16:21:04 CEST 2012 mips GNU/Linux [root@MCU:/opt]# watch -n 1 cat /proc/meminfo | grep MemFree MemFree: 216992 kB MemFree: 216992 kB MemFree: 216944 kB MemFree: 216992 kB MemFree: 216992 kB MemFree: 216992 kB MemFree: 216992 kB uname -a Linux MCU 3.4.9-rt17-11244-gb12622a #23 PREEMPT RT Fri Aug 24 12:15:49 CEST 2012 mips GNU/Linux [root@MCU:/opt]# watch -n 1 cat /proc/meminfo | grep MemFree MemFree: 204304 kB MemFree: 204208 kB MemFree: 204112 kB MemFree: 204064 kB MemFree: 203968 kB MemFree: 203920 kB MemFree: 203824 kB MemFree: 203776 kB uname -a Linux MCU 3.4.9-rt17-11244-gb12622a #24 PREEMPT Fri Aug 24 14:15:04 CEST 2012 mips GNU/Linux [root@MCU:/opt]# watch -n 1 cat /proc/meminfo | grep MemFree MemFree: 222240 kB MemFree: 222192 kB MemFree: 222192 kB MemFree: 222192 kB MemFree: 222144 kB MemFree: 222144 kB MemFree: 222192 kB MemFree: 222144 kB MemFree: 222192 kB MemFree: 222144 kB