From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 41A69C433E0 for ; Fri, 5 Feb 2021 12:49:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DEA4F64FC6 for ; Fri, 5 Feb 2021 12:49:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229611AbhBEMtF (ORCPT ); Fri, 5 Feb 2021 07:49:05 -0500 Received: from 95-165-96-9.static.spd-mgts.ru ([95.165.96.9]:33112 "EHLO blackbox.su" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S231602AbhBEMp0 (ORCPT ); Fri, 5 Feb 2021 07:45:26 -0500 Received: from metamini.metanet (metamini.metanet [192.168.2.5]) by blackbox.su (Postfix) with ESMTP id 569F881490; Fri, 5 Feb 2021 15:44:42 +0300 (MSK) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=blackbox.su; s=mail; t=1612529082; bh=YBLbmCIIx0JTGjU650VQNiKxdC5G6nlB0kRiKx3uBas=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mTdURH27Dm552FQVsJnrk0vj4lMxn7OmI8U85ppjNjpFwsZC0lcr6q6jjLr5/jBtP 6sUO1HnMRUN4MCXlCKZoCmyMjCnVuqeyyiftfLdXrijaPk3nBDCwk/bGP7Nz2zJOdW 4B3vpPMfdECgl+9RhnQnskGADzQEr56AjaXtZnXBBknBhTWtTJyTkRXqTy6ll/T2F5 jZCJ1GCt9MuCEEvvsrDoln4k8dxbOQgTivQFAvhRi/7bUOJoKdGIvdOHWamGE3Tw8O Z3g5Hcqh/RAsN5+fXnZ0hJiz1b/SOE7Maz8oS41rwgmd6ZQT8/paHiYzmmwVPU5LD4 fSid9XILDFmUA== From: Sergej Bauer To: thesven73@gmail.com Cc: andrew@lunn.ch, Markus.Elfring@web.de, rtgbnm@gmail.com, tharvey@gateworks.com, anders@ronningen.priv.no, sbauer@blackbox.su, Bryan Whitehead , UNGLinuxDriver@microchip.com (maintainer:MICROCHIP LAN743X ETHERNET DRIVER), "David S. Miller" , Jakub Kicinski , netdev@vger.kernel.org (open list:MICROCHIP LAN743X ETHERNET DRIVER), linux-kernel@vger.kernel.org (open list) Subject: Re: [PATCH net-next v1 1/6] lan743x: boost performance on cpu archs w/o dma cache snooping Date: Fri, 5 Feb 2021 15:44:19 +0300 Message-Id: <20210205124419.8575-1-sbauer@blackbox.su> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210129195240.31871-2-TheSven73@gmail.com> References: <20210129195240.31871-2-TheSven73@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Sven I can confirm great stability improvement after your patch "lan743x: boost performance on cpu archs w/o dma cache snooping". Please note, that test_ber opens raw sockets as s = socket(AF_PACKET, SOCK_RAW, ETH_P_ALL) and resulting 'average speed' is a average egress speed. Test machine is Intel Pentium G4560 3.50GHz lan743x with rejected virtual phy 'inside' What I had before: $ ifmtu eth7 500 $ test_ber -l eth7 -c 1000 -n 1000000 -f500 --no-conf ... number of sent packets = 1000000 number of received packets = 289017 number of lost packets = 710983 number of out of order packets = 0 number of bit errors = 0 total errors detected = 710983 bit error rate = 0.710983 average speed: 429.3799 Mbit/s $ ifmtu eth7 1500 $ sudo test_ber -l eth7 -c 1000 -n 1000000 -f1500 --no-conf ... number of sent packets = 1000000 number of received packets = 577194 number of lost packets = 422806 number of out of order packets = 0 number of bit errors = 0 total errors detected = 422806 bit error rate = 0.422806 average speed: 644.6557 Mbit/s --- and what I had after your patch: $ ifmtu eth7 500 $ test_ber -l eth7 -c 1000 -n 1000000 -f500 --no-conf ... number of sent packets = 1000000 number of received packets = 711329 number of lost packets = 288671 number of out of order packets = 0 number of bit errors = 0 total errors detected = 288671 bit error rate = 0.288671 average speed: 429.2263 Mbit/s $ ifmtu eth7 1500 $ test_ber -l eth7 -c 1000 -n 1000000 -f1500 --no-conf ... number of sent packets = 1000000 number of received packets = 1000000 number of lost packets = 0 number of out of order packets = 0 number of bit errors = 0 total errors detected = 0 bit error rate = 0 average speed: 644.5405 Mbit/s