From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id DF5A6A04B5; Tue, 12 Jan 2021 06:12:04 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 5FA8C140D9A; Tue, 12 Jan 2021 06:12:04 +0100 (CET) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by mails.dpdk.org (Postfix) with ESMTP id C4142140D99 for ; Tue, 12 Jan 2021 06:12:02 +0100 (CET) IronPort-SDR: 44FaYXd7vcUO6mF3L/NRSyVlsdcdUeKAGcE89el+WP3XrDl0Z7BjI3HPTau9YI+VCgineAaRTq 1kGlGawMm8GA== X-IronPort-AV: E=McAfee;i="6000,8403,9861"; a="157760557" X-IronPort-AV: E=Sophos;i="5.79,340,1602572400"; d="scan'208";a="157760557" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jan 2021 21:12:01 -0800 IronPort-SDR: uCehCgdlInlsjNSlwXkEn67WK12n8EgH/pbK9nVRBA21F7rJtlZuewAeuFUgf/F6sKrpHk4zg/ NNp12VsMiLNQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.79,340,1602572400"; d="scan'208";a="345107744" Received: from fmsmsx602.amr.corp.intel.com ([10.18.126.82]) by fmsmga007.fm.intel.com with ESMTP; 11 Jan 2021 21:12:01 -0800 Received: from shsmsx605.ccr.corp.intel.com (10.109.6.215) by fmsmsx602.amr.corp.intel.com (10.18.126.82) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Mon, 11 Jan 2021 21:12:01 -0800 Received: from shsmsx601.ccr.corp.intel.com (10.109.6.141) by SHSMSX605.ccr.corp.intel.com (10.109.6.215) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1713.5; Tue, 12 Jan 2021 13:11:59 +0800 Received: from shsmsx601.ccr.corp.intel.com ([10.109.6.141]) by SHSMSX601.ccr.corp.intel.com ([10.109.6.141]) with mapi id 15.01.1713.004; Tue, 12 Jan 2021 13:11:59 +0800 From: "Zhang, Qi Z" To: "Rong, Leyi" , "Lu, Wenzhuo" CC: "dev@dpdk.org" Thread-Topic: [PATCH] net/ice: enlarge ice RXQ rearm thresh to 64 Thread-Index: AQHW4/Cs5zrMKlnRtkyxTVnKqNcr8aojetZg Date: Tue, 12 Jan 2021 05:11:59 +0000 Message-ID: <7190e3e99b3942c1b2858fee5f9d31ee@intel.com> References: <20210106053548.67341-1-leyi.rong@intel.com> In-Reply-To: <20210106053548.67341-1-leyi.rong@intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: dlp-reaction: no-action dlp-version: 11.5.1.3 dlp-product: dlpe-windows x-originating-ip: [10.239.127.36] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: Re: [dpdk-dev] [PATCH] net/ice: enlarge ice RXQ rearm thresh to 64 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 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" > -----Original Message----- > From: Rong, Leyi > Sent: Wednesday, January 6, 2021 1:36 PM > To: Zhang, Qi Z ; Lu, Wenzhuo > Cc: dev@dpdk.org; Rong, Leyi > Subject: [PATCH] net/ice: enlarge ice RXQ rearm thresh to 64 >=20 > We observe performance drop on ice AVX512 data path after stop and start = by > using testpmd. >=20 > As CPU polling is faster in AVX512 path, L3 contested accesses is intensi= fied > when rxrearm_start is a random value after testpmd stop/start. >=20 > Enlarge ICE_RXQ_REARM_THRESH to 64 to ease the contested asscesses and fi= x > the performance drop issue. >=20 > Signed-off-by: Leyi Rong Acked-by: Qi Zhang Applied to dpdk-next-net-intel after add cc:stable tag. Thanks Qi