From patchwork Thu Apr 6 10:06:10 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chao Zhu X-Patchwork-Id: 23280 X-Patchwork-Delegate: thomas@monjalon.net Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id 59964374C; Thu, 6 Apr 2017 12:06:27 +0200 (CEST) Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) by dpdk.org (Postfix) with ESMTP id 4EE9E2C35 for ; Thu, 6 Apr 2017 12:06:25 +0200 (CEST) Received: from pps.filterd (m0098393.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v369wg17028191 for ; Thu, 6 Apr 2017 06:06:24 -0400 Received: from e28smtp03.in.ibm.com (e28smtp03.in.ibm.com [125.16.236.3]) by mx0a-001b2d01.pphosted.com with ESMTP id 29njpvbemx-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Thu, 06 Apr 2017 06:06:16 -0400 Received: from localhost by e28smtp03.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 6 Apr 2017 15:36:13 +0530 Received: from d28relay10.in.ibm.com (9.184.220.161) by e28smtp03.in.ibm.com (192.168.1.133) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; Thu, 6 Apr 2017 15:36:11 +0530 Received: from d28av07.in.ibm.com (d28av07.in.ibm.com [9.184.220.146]) by d28relay10.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v36A4qoI16842794 for ; Thu, 6 Apr 2017 15:34:52 +0530 Received: from d28av07.in.ibm.com (localhost [127.0.0.1]) by d28av07.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id v36A6AN0022057 for ; Thu, 6 Apr 2017 15:36:11 +0530 Received: from chozha.in.ibm.com ([9.109.223.90]) by d28av07.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id v36A6AFn022048; Thu, 6 Apr 2017 15:36:10 +0530 From: Chao Zhu To: dev@dpdk.org Cc: Gowrishankar , sergio.gonzalez.monroy@intel.com, david.marchand@6wind.com Date: Thu, 6 Apr 2017 15:36:10 +0530 X-Mailer: git-send-email 1.9.1 In-Reply-To: <1491473170-25160-1-git-send-email-chaozhu@linux.vnet.ibm.com> References: <1491473170-25160-1-git-send-email-chaozhu@linux.vnet.ibm.com> X-TM-AS-MML: disable x-cbid: 17040610-0008-0000-0000-0000055078ED X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17040610-0009-0000-0000-0000135C9EBC Message-Id: <1491473170-25160-3-git-send-email-chaozhu@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-04-06_08:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1702020001 definitions=main-1704060084 Subject: [dpdk-dev] [PATCH 2/2] doc/guides: Add hugepage reserve instructions for IBM POWER X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" This patch adds additional instructions for hugepage reservation on IBM POWER. Signed-off-by: Chao Zhu Acked-by: John McNamara --- doc/guides/linux_gsg/sys_reqs.rst | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/doc/guides/linux_gsg/sys_reqs.rst b/doc/guides/linux_gsg/sys_reqs.rst index 61222c6..3a28c9e 100644 --- a/doc/guides/linux_gsg/sys_reqs.rst +++ b/doc/guides/linux_gsg/sys_reqs.rst @@ -200,6 +200,12 @@ On a NUMA machine, pages should be allocated explicitly on separate nodes:: For 1G pages, it is not possible to reserve the hugepage memory after the system has booted. + On IBM POWER system, the nr_overcommit_hugepages should be set to the same value as nr_hugepages. + For example, if the required page number is 128, the following commands are used:: + + echo 128 > /sys/kernel/mm/hugepages/hugepages-16384kB/nr_hugepages + echo 128 > /sys/kernel/mm/hugepages/hugepages-16384kB/nr_overcommit_hugepages + Using Hugepages with the DPDK ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^