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 80DEAA04C1; Thu, 21 Nov 2019 16:36:18 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id B4FE32BA3; Thu, 21 Nov 2019 16:36:17 +0100 (CET) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by dpdk.org (Postfix) with ESMTP id 946F72BA2 for ; Thu, 21 Nov 2019 16:36:15 +0100 (CET) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 21 Nov 2019 07:36:14 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,226,1571727600"; d="scan'208";a="209939420" Received: from fyigit-mobl.ger.corp.intel.com (HELO [10.237.221.96]) ([10.237.221.96]) by orsmga003.jf.intel.com with ESMTP; 21 Nov 2019 07:36:10 -0800 To: David Marchand , dev@dpdk.org Cc: thomas@monjalon.net, Wenzhuo Lu , Jingjing Wu , Bernard Iremonger References: <20191121151256.20613-1-david.marchand@redhat.com> From: Ferruh Yigit Openpgp: preference=signencrypt Autocrypt: addr=ferruh.yigit@intel.com; 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charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Subject: Re: [dpdk-dev] [PATCH] 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 11/21/2019 3:12 PM, 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 */ > [...] > > [1]: https://git.dpdk.org/dpdk/commit/?id=436b3a6b6e62 > > Signed-off-by: David Marchand Thanks for figuring this out, Acked-by: Ferruh Yigit <...> > diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h > index 90694a3309..217d577018 100644 > --- a/app/test-pmd/testpmd.h > +++ b/app/test-pmd/testpmd.h > @@ -58,8 +58,6 @@ typedef uint16_t portid_t; > typedef uint16_t queueid_t; > typedef uint16_t streamid_t; > > -#define MAX_QUEUE_ID ((1 << (sizeof(queueid_t) * 8)) - 1) No strong opinion, but would it be simpler if assign 'MAX_QUEUE_ID' to 'RTE_MAX_QUEUES_PER_PORT' instead? #define MAX_QUEUE_ID RTE_MAX_QUEUES_PER_PORT