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 60A4DA0547; Fri, 5 Mar 2021 14:14:57 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 7C4AF22A309; Fri, 5 Mar 2021 14:14:31 +0100 (CET) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by mails.dpdk.org (Postfix) with ESMTP id 781B922A2F5 for ; Fri, 5 Mar 2021 14:14:29 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1614950069; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=AzDnLXupj8QEeWIKG2keFD8CPLa3+V3chat7E1yx3+g=; b=LOFQCxs/T8w/zYlLGLn9xyODPo/jqtfvkvzBWSbYL+v6Bi0erLSP74H4m6LGEWtmOHm81r pYEd2prj8wtO+dw7RcIjQqjSNdaojvPhJwcJLemno0sEbPooUzChE0KETRf+MgmCUFsVT9 TpVqJvrqvgEC3xCEkEuNICaMhOaFAlY= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-243-P3JsQ6i4MiuMUl-PRZnDag-1; Fri, 05 Mar 2021 08:14:27 -0500 X-MC-Unique: P3JsQ6i4MiuMUl-PRZnDag-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 58107108BD08 for ; Fri, 5 Mar 2021 13:14:26 +0000 (UTC) Received: from bnemeth.users.ipa.redhat.com (ovpn-114-231.ams2.redhat.com [10.36.114.231]) by smtp.corp.redhat.com (Postfix) with ESMTP id 978C719D9B; Fri, 5 Mar 2021 13:14:25 +0000 (UTC) From: Balazs Nemeth To: bnemeth@redhat.com, dev@dpdk.org Date: Fri, 5 Mar 2021 14:14:03 +0100 Message-Id: In-Reply-To: References: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=bnemeth@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Subject: [dpdk-dev] [PATCH 5/8] net/qede: use rte_pktmbuf_free_bulk instead of rte_pktmbuf_free 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" rte_pktmbuf_free_bulk calls rte_mempool_put_bulk with the number of pending packets to return to the mempool. In contrast, rte_pktmbuf_free calls rte_mempool_put that calls rte_mempool_put_bulk with one object. An important performance related downside of adding one packet at a time to the mempool is that on each call, the per-core cache pointer needs to be read from tls while a single rte_mempool_put_bulk only reads from the tls once. Signed-off-by: Balazs Nemeth --- drivers/net/qede/qede_rxtx.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/net/qede/qede_rxtx.c b/drivers/net/qede/qede_rxtx.c index 7ce4c00e3..e24a937f4 100644 --- a/drivers/net/qede/qede_rxtx.c +++ b/drivers/net/qede/qede_rxtx.c @@ -891,6 +891,7 @@ qede_process_tx_compl(__rte_unused struct ecore_dev *edev, struct rte_mbuf *mbuf; uint16_t nb_segs; uint16_t idx; + uint16_t first_idx; rte_compiler_barrier(); sw_tx_cons = ecore_chain_get_cons_idx(&txq->tx_pbl); @@ -905,6 +906,7 @@ qede_process_tx_compl(__rte_unused struct ecore_dev *edev, remaining = hw_bd_cons - sw_tx_cons; txq->nb_tx_avail += remaining; + first_idx = idx; while (remaining) { mbuf = txq->sw_tx_ring[idx]; @@ -919,11 +921,17 @@ qede_process_tx_compl(__rte_unused struct ecore_dev *edev, nb_segs--; } - rte_pktmbuf_free(mbuf); idx = (idx + 1) & mask; PMD_TX_LOG(DEBUG, txq, "Freed tx packet\n"); } txq->sw_tx_cons = idx; + + if (first_idx > idx) { + rte_pktmbuf_free_bulk(&txq->sw_tx_ring[first_idx], mask - first_idx + 1); + rte_pktmbuf_free_bulk(&txq->sw_tx_ring[0], idx); + } else { + rte_pktmbuf_free_bulk(&txq->sw_tx_ring[first_idx], idx - first_idx); + } } static int qede_drain_txq(struct qede_dev *qdev, -- 2.29.2