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Wed, 29 Sep 2021 07:12:04 -0400 (EDT) From: Thomas Monjalon <thomas@monjalon.net> To: Mohammad Masumi <mmasumi@gmail.com>, "Burakov, Anatoly" <anatoly.burakov@intel.com> Cc: "users@dpdk.org" <users@dpdk.org>, "dmitry.kozliuk@gmail.com" <dmitry.kozliuk@gmail.com>, "Richardson, Bruce" <bruce.richardson@intel.com>, "stephen@networkplumber.org" <stephen@networkplumber.org> Subject: Re: [dpdk-users] Memory allocation limits Date: Wed, 29 Sep 2021 13:12:03 +0200 Message-ID: <1758092.NzVlmGAOTI@thomas> In-Reply-To: <PH0PR11MB509303BFA63B5C9EF0888A8BF7A99@PH0PR11MB5093.namprd11.prod.outlook.com> References: <CAFoxKyG1vEKKpzD0FAHeGqs_2m=Mm+56gZ2DEXumRGTzpGis5w@mail.gmail.com> <1728391.6pqWS55XY0@thomas> <PH0PR11MB509303BFA63B5C9EF0888A8BF7A99@PH0PR11MB5093.namprd11.prod.outlook.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK usage discussions <users.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/users>, <mailto:users-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/users/> List-Post: <mailto:users@dpdk.org> List-Help: <mailto:users-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/users>, <mailto:users-request@dpdk.org?subject=subscribe> Errors-To: users-bounces@dpdk.org 29/09/2021 12:14, Burakov, Anatoly: > From: Thomas Monjalon <thomas@monjalon.net> > > 26/09/2021 17:52, Mohammad Masumi: > > > Hi > > > > > > I have HP server with 768GB memory 384GB in each Numa but I can't > > > allocate more than 64GB by rte_malloc by changing some parameters in > > > rte_config.h it increased to 128GB How to increase heap size? > > > > adding people Cc to help > > > > Hi, > > This is intentional. In order to increase the amount of contiguous allocation possible to perform in DPDK, you need to adjust the following values in rte_config.h: > > #define RTE_MAX_MEMSEG_PER_LIST 8192 > #define RTE_MAX_MEM_MB_PER_LIST 32768 > #define RTE_MAX_MEMSEG_PER_TYPE 32768 > #define RTE_MAX_MEM_MB_PER_TYPE 65536 > > I do not recommend arbitrarily changing them as this is untested, but increasing them proportionally (e.g. multiply all of them by 2 or 4) should not break anything. It looks to be something to add in docs, right?