From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1753013AbdBASLP (ORCPT <rfc822;w@1wt.eu>);
        Wed, 1 Feb 2017 13:11:15 -0500
Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:43508 "EHLO
        mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL)
        by vger.kernel.org with ESMTP id S1750777AbdBASLN (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Wed, 1 Feb 2017 13:11:13 -0500
Date: Wed, 1 Feb 2017 10:11:03 -0800
From: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
To: Thiago Jung Bauermann <bauerman@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org, Michael Ellerman <mpe@ellerman.id.au>,
        Paul Clarke <pc@us.ibm.com>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] powerpc/pseries: Dynamically increase RMA size
References: <20160805061041.GA31857@us.ibm.com>
 <20160809171131.GA2329@us.ibm.com>
 <87wpdatqrt.fsf@concordia.ellerman.id.au>
 <2499748.LKgOIUjhgo@morokweng>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <2499748.LKgOIUjhgo@morokweng>
X-Operating-System: Linux 2.0.32 on an i486
User-Agent: Mutt/1.7.1 (2016-10-04)
X-TM-AS-GCONF: 00
X-Content-Scanned: Fidelis XPS MAILER
x-cbid: 17020118-0016-0000-0000-0000060A8E0E
X-IBM-SpamModules-Scores: 
X-IBM-SpamModules-Versions: BY=3.00006538; HX=3.00000240; KW=3.00000007;
 PH=3.00000004; SC=3.00000201; SDB=6.00815794; UDB=6.00398310; IPR=6.00593236;
 BA=6.00005108; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000;
 ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00014138; XFM=3.00000011;
 UTC=2017-02-01 18:11:09
X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused
x-cbparentid: 17020118-0017-0000-0000-0000370551F9
Message-Id: <20170201181103.GA30729@us.ibm.com>
X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-02-01_13:,,
 signatures=0
X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0
 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam
 adjust=0 reason=mlx scancount=1 engine=8.0.1-1612050000
 definitions=main-1702010179
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Thiago Jung Bauermann [bauerman@linux.vnet.ibm.com] wrote:
> Instead of this method of trying a small RMA size and rebooting to try a 
> bigger size, could the "min RMA percentage of total RAM" field of the 
> ibm_architecture_vec be used?

We tried that and concluded that even 1% could end up reserving a lot of
memory on systems with lot of memory.

Sukadev