From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 90E48A04C3; Fri, 22 Nov 2019 15:14:11 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id EE913235; Fri, 22 Nov 2019 15:14:10 +0100 (CET) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by dpdk.org (Postfix) with ESMTP id D45021F5 for ; Fri, 22 Nov 2019 15:14:08 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 22 Nov 2019 06:14:07 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,229,1571727600"; d="scan'208";a="219476540" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.96]) ([10.237.221.96]) by orsmga002.jf.intel.com with ESMTP; 22 Nov 2019 06:14:04 -0800 To: David Marchand , dev@dpdk.org Cc: thomas@monjalon.net, stephen@networkplumber.org, Wenzhuo Lu , Jingjing Wu , Bernard Iremonger , Andrew Rybchenko References: <20191121151256.20613-1-david.marchand@redhat.com> <20191122104323.28992-1-david.marchand@redhat.com> From: Ferruh Yigit Autocrypt: addr=ferruh.yigit@intel.com; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] [PATCH v2] app/testpmd: reduce memory consumption 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" On 11/22/2019 10:43 AM, David Marchand wrote: > Following [1], testpmd memory consumption has skyrocketted. > The rte_port structure has gotten quite fat. > > struct rte_port { > [...] > struct rte_eth_rxconf rx_conf[65536]; /* 266280 3145728 */ > /* --- cacheline 53312 boundary (3411968 bytes) was 40 bytes ago --- */ > struct rte_eth_txconf tx_conf[65536]; /* 3412008 3670016 */ > /* --- cacheline 110656 boundary (7081984 bytes) was 40 bytes ago --- */ > [...] > /* size: 8654936, cachelines: 135234, members: 31 */ > [...] > > testpmd handles RTE_MAX_ETHPORTS ports (32 by default) which means that it > needs ~256MB just for this internal representation. > > The reason is that a testpmd rte_port (the name is quite confusing, as > it is a local type) maintains configurations for all queues of a port. > But where you would expect testpmd to use RTE_MAX_QUEUES_PER_PORT as the > maximum queue count, the rte_port uses MAX_QUEUE_ID set to 64k. > > Prefer the ethdev maximum value. > > After this patch: > struct rte_port { > [...] > struct rte_eth_rxconf rx_conf[1025]; /* 8240 49200 */ > /* --- cacheline 897 boundary (57408 bytes) was 32 bytes ago --- */ > struct rte_eth_txconf tx_conf[1025]; /* 57440 57400 */ > /* --- cacheline 1794 boundary (114816 bytes) was 24 bytes ago --- */ > [...] > /* size: 139488, cachelines: 2180, members: 31 */ > [...] > > With this, we can ask for less memory in test-null.sh. > > [1]: https://git.dpdk.org/dpdk/commit/?id=436b3a6b6e62 > > Signed-off-by: David Marchand > Acked-by: Ferruh Yigit > Acked-by: Thomas Monjalon Applied to dpdk-next-net/master, thanks.