From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <dev-bounces@dpdk.org> Received: from dpdk.org (dpdk.org [92.243.14.124]) by dpdk.space (Postfix) with ESMTP id 3405EA0679 for <public@inbox.dpdk.org>; Thu, 4 Apr 2019 17:30:10 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id E85591B3DA; Thu, 4 Apr 2019 17:30:08 +0200 (CEST) Received: from EUR02-VE1-obe.outbound.protection.outlook.com (mail-eopbgr20078.outbound.protection.outlook.com [40.107.2.78]) by dpdk.org (Postfix) with ESMTP id C57D91B3C0 for <dev@dpdk.org>; Thu, 4 Apr 2019 17:30:07 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=armh.onmicrosoft.com; s=selector1-arm-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=ry6F0GowTawbPuYdKsd7WILv6frRwOX9Zd0d0QJ5F58=; b=pEbSHd9+3iYZ5/AuNu62FVWdcANtJb/rWZwTyXhcwLBUeDGTw2FSriFgK+I7SyYdYcJHL8VZDcChS9AdWoIeRKeIqGXLz5zfe/CvkEyrljaNBevgIBzYVxSWMBwHQW8hT02rB2Y8uT1nP1z/5EF5YnhX+jk4Q/+9TFsJoVVxSm8= Received: from VE1PR08MB5149.eurprd08.prod.outlook.com (20.179.30.152) by VE1PR08MB5198.eurprd08.prod.outlook.com (20.179.31.85) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1771.15; Thu, 4 Apr 2019 15:30:05 +0000 Received: from VE1PR08MB5149.eurprd08.prod.outlook.com ([fe80::e0ae:ecad:ec5:8177]) by VE1PR08MB5149.eurprd08.prod.outlook.com ([fe80::e0ae:ecad:ec5:8177%2]) with mapi id 15.20.1771.016; Thu, 4 Apr 2019 15:30:05 +0000 From: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com> To: "Phil Yang (Arm Technology China)" <Phil.Yang@arm.com>, "dev@dpdk.org" <dev@dpdk.org>, "thomas@monjalon.net" <thomas@monjalon.net> CC: "david.hunt@intel.com" <david.hunt@intel.com>, "reshma.pattan@intel.com" <reshma.pattan@intel.com>, "Gavin Hu (Arm Technology China)" <Gavin.Hu@arm.com>, "Phil Yang (Arm Technology China)" <Phil.Yang@arm.com>, nd <nd@arm.com>, nd <nd@arm.com> Thread-Topic: [PATCH v3 2/3] test/distributor: replace sync builtins with atomic builtins Thread-Index: AQHU6etCEepRv6x1rEe+HkQV9XVLUqYsInBw Date: Thu, 4 Apr 2019 15:30:05 +0000 Message-ID: <VE1PR08MB514992C2EDC10D31DD09F92A98500@VE1PR08MB5149.eurprd08.prod.outlook.com> References: <1546508946-12552-1-git-send-email-phil.yang@arm.com> <1554274796-23258-1-git-send-email-phil.yang@arm.com> <1554274796-23258-3-git-send-email-phil.yang@arm.com> In-Reply-To: <1554274796-23258-3-git-send-email-phil.yang@arm.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=Honnappa.Nagarahalli@arm.com; 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DIR:OUT; SFP:1101; SCL:1; SRVR:VE1PR08MB5198; H:VE1PR08MB5149.eurprd08.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; A:1; MX:1; received-spf: None (protection.outlook.com: arm.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: wfu1l/8OBzpQFWnXX4AHfBlgOxrHu1ijNUd3uK7GPqwWODviEaXHi2hE8ad2Z9zxeTjAITMOlkpgNMbj1PuHNM+tlBWAFcQTSc9goyRKEJh5ZUNxUwo5QON7GvHp4fmfEfD9YN1o6Bw5vrbut/W3wFTHK5O5qraeQMBwhFv0hRqNccgfB5Wr3uC5xUAaL5w1sdUHuBTxSaASMXzHoIGfbJE9rk2xFiB/UxMk1iL5GiUrUl4tMCzM1Mgg2kRYL12HF/jp1sF/grLL4sLGSi9u1/iwUQDLi2qF3zqNsSgixQ/RuuqfY1G/3AWAIqFZmlQDt9cbfQfaE4ngYXpOSsu2C68mq9v/u9bfZpWuzMpCcV95d4ztT8kml9Yb9Zn0LcRGr+BGY1BWuhFprSiveIPbkwY6n+aSUaIqSLxC0F202Qo= Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-Network-Message-Id: b3e51746-6277-4afd-db43-08d6b91269c9 X-MS-Exchange-CrossTenant-originalarrivaltime: 04 Apr 2019 15:30:05.3519 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: VE1PR08MB5198 Subject: Re: [dpdk-dev] [PATCH v3 2/3] test/distributor: replace sync builtins with atomic builtins X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> Errors-To: dev-bounces@dpdk.org Sender: "dev" <dev-bounces@dpdk.org> Message-ID: <20190404153005.BmvM1xco2uZcp9M5wKyAKnBZ6XjOOVg18mczSKlp3LA@z> >=20 > '__sync' built-in functions are deprecated, should use the '__atomic' > built-in instead. the sync built-in functions are full barriers, while at= omic > built-in functions offer less restrictive one-way barriers, which help > performance. >=20 > Here is the example test result on TX2: > sudo ./arm64-armv8a-linuxapp-gcc/app/test -l 112-139 \ -n 4 --socket- > mem=3D1024,1024 -- -i > RTE>>distributor_perf_autotest >=20 > *** distributor_perf_autotest without this patch *** =3D=3D=3D=3D Cache l= ine switch > test =3D=3D=3D Time for 33554432 iterations =3D 1519202730 ticks Ticks pe= r iteration > =3D 45 >=20 > *** distributor_perf_autotest with this patch *** =3D=3D=3D=3D Cache line= switch test > =3D=3D=3D Time for 33554432 iterations =3D 1251715496 ticks Ticks per ite= ration =3D 37 >=20 > Less ticks needed for the cache line switch test. It got 17% of performan= ce > improvement. >=20 > Signed-off-by: Phil Yang <phil.yang@arm.com> > Reviewed-by: Gavin Hu <gavin.hu@arm.com> > Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com> > Reviewed-by: Joyce Kong <joyce.kong@arm.com> > Reviewed-by: Dharmik Thakkar <dharmik.thakkar@arm.com> > --- Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>