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 3A4D7A0546; Thu, 27 May 2021 10:17:37 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 6C82641105; Thu, 27 May 2021 10:17:31 +0200 (CEST) Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by mails.dpdk.org (Postfix) with ESMTP id 30F5E41104 for ; Thu, 27 May 2021 10:17:30 +0200 (CEST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id AA99E13A1; Thu, 27 May 2021 01:17:29 -0700 (PDT) Received: from net-x86-dell-8268.shanghai.arm.com (net-x86-dell-8268.shanghai.arm.com [10.169.210.132]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id D5AD73F73B; Thu, 27 May 2021 01:17:27 -0700 (PDT) From: Feifei Wang To: Beilei Xing Cc: dev@dpdk.org, nd@arm.com, Feifei Wang , Ruifeng Wang Date: Thu, 27 May 2021 16:17:14 +0800 Message-Id: <20210527081714.1367611-3-feifei.wang2@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210527081714.1367611-1-feifei.wang2@arm.com> References: <20210527081714.1367611-1-feifei.wang2@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH v1 2/2] net/i40e: improve performance for vector Tx 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" For i40e vector Tx path, if tx_offload is set as FAST_FREE_MBUF mode, no mbuf fast free operations are executed. To fix this, add mbuf fast free mode for vector Tx path. Furthermore, for i40e vector Tx path, if implement FAST_FREE_MBUF mode, it means per-queue all mbufs come from the same mempool and have refcnt = 1. Thus we can use bulk free of the buffers when mbuf fast free mode is enabled. For vector path in arm platform: In n1sdp, performance is improved by 18.4%; In thunderx2, performance is improved by 23%. For vector path in x86 platform: No performance changes. Suggested-by: Ruifeng Wang Signed-off-by: Feifei Wang --- drivers/net/i40e/i40e_rxtx_vec_common.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/net/i40e/i40e_rxtx_vec_common.h b/drivers/net/i40e/i40e_rxtx_vec_common.h index 16fcf0aec6..f52ed98d62 100644 --- a/drivers/net/i40e/i40e_rxtx_vec_common.h +++ b/drivers/net/i40e/i40e_rxtx_vec_common.h @@ -99,6 +99,16 @@ i40e_tx_free_bufs(struct i40e_tx_queue *txq) * tx_next_dd - (tx_rs_thresh-1) */ txep = &txq->sw_ring[txq->tx_next_dd - (n - 1)]; + + if (txq->offloads & DEV_TX_OFFLOAD_MBUF_FAST_FREE) { + for (i = 0; i < n; i++) { + free[i] = txep[i].mbuf; + txep[i].mbuf = NULL; + } + rte_mempool_put_bulk(free[0]->pool, (void **)free, n); + goto done; + } + m = rte_pktmbuf_prefree_seg(txep[0].mbuf); if (likely(m != NULL)) { free[0] = m; @@ -126,6 +136,7 @@ i40e_tx_free_bufs(struct i40e_tx_queue *txq) } } +done: /* buffers were freed, update counters */ txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + txq->tx_rs_thresh); txq->tx_next_dd = (uint16_t)(txq->tx_next_dd + txq->tx_rs_thresh); -- 2.25.1