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 A6937A0C50; Fri, 16 Jul 2021 16:27:50 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 2DF1C4067B; Fri, 16 Jul 2021 16:27:50 +0200 (CEST) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by mails.dpdk.org (Postfix) with ESMTP id 4D9FD40151 for ; Fri, 16 Jul 2021 16:27:49 +0200 (CEST) X-IronPort-AV: E=McAfee;i="6200,9189,10046"; a="198000025" X-IronPort-AV: E=Sophos;i="5.84,245,1620716400"; d="scan'208";a="198000025" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Jul 2021 07:27:48 -0700 X-IronPort-AV: E=Sophos;i="5.84,245,1620716400"; d="scan'208";a="413989576" Received: from bricha3-mobl.ger.corp.intel.com ([10.252.26.216]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-SHA; 16 Jul 2021 07:27:47 -0700 Date: Fri, 16 Jul 2021 15:27:44 +0100 From: Bruce Richardson To: Konstantin Ananyev Cc: dev@dpdk.org Message-ID: References: <20210716135027.30855-1-konstantin.ananyev@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210716135027.30855-1-konstantin.ananyev@intel.com> Subject: Re: [dpdk-dev] [PATCH] raw/ioat: fix termination descriptor for batch 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" On Fri, Jul 16, 2021 at 02:50:27PM +0100, Konstantin Ananyev wrote: > When batch_size == 1, idxd has to add a dummy termination descriptor > to satisfy HW requirements. > Right now it uses NOP descriptor with FENCE flag. > This is excessive and fencing can slowdown things quite significantly. > The patch removes FENCE flag from termination dummy descriptor. > That helps to improve performance for no-burst scenarios. > > Fixes: 245efe544d8e ("raw/ioat: report status of completed jobs") > > Signed-off-by: Konstantin Ananyev Thanks for patch. Acked-by: Bruce Richardson