From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <olivier.matz@6wind.com>
Received: from mail.droids-corp.org (zoll.droids-corp.org [94.23.50.67])
 by dpdk.org (Postfix) with ESMTP id 88952133F
 for <dev@dpdk.org>; Wed,  9 Nov 2016 15:50:10 +0100 (CET)
Received: from lfbn-1-5996-232.w90-110.abo.wanadoo.fr ([90.110.195.232]
 helo=[192.168.1.13])
 by mail.droids-corp.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128)
 (Exim 4.84_2) (envelope-from <olivier.matz@6wind.com>)
 id 1c4UFr-00073l-9Q; Wed, 09 Nov 2016 15:53:37 +0100
To: Keren Hochman <keren.hochman@lightcyber.com>,
 Christian Ehrhardt <christian.ehrhardt@canonical.com>
References: <CAJq3SQ6Wjueqs9sCF0Kn4S_O0sZqZ_4hV6ztAeA8a583OZQc9w@mail.gmail.com>
 <CAATJJ0LNAAbT9qnWgp-OtXeE-dX6irG0WxAwMW_euKiaVfEoVQ@mail.gmail.com>
 <CAJq3SQ7r4e_Dr1wvwPYmiECWASEvAwvZomH4x6o1MFo35JQVXg@mail.gmail.com>
Cc: dev <dev@dpdk.org>
From: Olivier Matz <olivier.matz@6wind.com>
Message-ID: <af2edd56-f900-4317-2d78-f7c6051e8502@6wind.com>
Date: Wed, 9 Nov 2016 15:50:02 +0100
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101
 Icedove/45.2.0
MIME-Version: 1.0
In-Reply-To: <CAJq3SQ7r4e_Dr1wvwPYmiECWASEvAwvZomH4x6o1MFo35JQVXg@mail.gmail.com>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
Subject: Re: [dpdk-dev] disable hugepages
X-BeenThere: dev@dpdk.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: patches and discussions about DPDK <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
X-List-Received-Date: Wed, 09 Nov 2016 14:50:10 -0000

Hi Keren,

On 11/09/2016 03:40 PM, Keren Hochman wrote:
> On Wed, Nov 9, 2016 at 3:40 PM, Christian Ehrhardt <
> christian.ehrhardt@canonical.com> wrote:
> 
>>
>> On Wed, Nov 9, 2016 at 1:55 PM, Keren Hochman <
>> keren.hochman@lightcyber.com> wrote:
>>
>>> how can I create mempool without hugepages?My application is running on a
>>> pcap file so no huge pages is needed ?
>>>
>>
>> Not sure if that is what you really want (Debug use only), but in general
>> no-huge is available as EAL arg
>>
>> From http://pktgen.readthedocs.io/en/latest/usage_eal.html :
>>
>> EAL options for DEBUG use only:
>>   --no-huge           : Use malloc instead of hugetlbfs
>>
> I need this option only for testing. How can I use rte_mempool_create if I
> use --no-huge?

When using --no-huge, the dpdk libraries (including mempool) allocate
its memory in standard memory. Just keep in mind the physical addresses
will be wrong, so this memory cannot be given to hw devices.

Regards,
Olivier