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=-1.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 5B7FFC433E0 for ; Tue, 30 Jun 2020 14:07:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 267EF2072D for ; Tue, 30 Jun 2020 14:07:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=waldekranz-com.20150623.gappssmtp.com header.i=@waldekranz-com.20150623.gappssmtp.com header.b="V8/N8HEi" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731015AbgF3OHS (ORCPT ); Tue, 30 Jun 2020 10:07:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50230 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729341AbgF3OHR (ORCPT ); Tue, 30 Jun 2020 10:07:17 -0400 Received: from mail-lj1-x242.google.com (mail-lj1-x242.google.com [IPv6:2a00:1450:4864:20::242]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1B84CC061755 for ; Tue, 30 Jun 2020 07:07:17 -0700 (PDT) Received: by mail-lj1-x242.google.com with SMTP id f5so6845453ljj.10 for ; Tue, 30 Jun 2020 07:07:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=waldekranz-com.20150623.gappssmtp.com; s=20150623; h=content-transfer-encoding:cc:subject:from:to:date:message-id :in-reply-to; bh=VkFSa0Hx6McRxiDsvWegC7LNRphnK9bu5b8QB4H6uKA=; b=V8/N8HEiMXoCSAOmm75vGg21vieEl+Q0qwC2zgNMUylD31LurkJo33merXcZQ702Hy wunnsUcRnl8HuocFENPjFC3DnbX6FKgAvJ300iUV0QT4uQvNHWPUsTX+RcNDvAGoE8P+ /eGBkj8AI9sWcX58WFM0+rHUpHd6DMt4hHvHI6/oZBnTixaSmSFN/wQMfboUrVZ8PE6N 9g+HoJNuZACAezU3LSheV/EljZvxkfXDiuY80khzxwRfJIiOKNjc6dPBJeDtmRpbOY3F +jg+gZOcadmfMHg3MNsqHwSJ9u6q799j5SGEwyNbtlc8+J0z8FM9JuIibEVPvZRyavWU 1tkA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:content-transfer-encoding:cc:subject:from:to :date:message-id:in-reply-to; bh=VkFSa0Hx6McRxiDsvWegC7LNRphnK9bu5b8QB4H6uKA=; b=sganxyezkG5DrkUaDnbZNAUMzFOn3Ib+z//3j2pUgUGQcVn6FBvT9FW8C1RvZL8TmI I8c0gLlU0daZPXoKenaLNsjOmMza08A9QpqpUNRnKECkYlGxzFFq0xra/VT8w6OV6LCt RtAU+Tq8W+vztcdJ0tkwtQgPBxaCmCoWjjg9wjvNEf32E/b1Qj4IEJ2iJPZQiiaIroLy ua31WI3F9thju/ls6lcFC/lBSeUrTgHgpfB5Y6CQlHYCdT09SzzTu1tCj7bDiGd/OWQU GxdJbXpemVM+03JeZokJV8x4WIEXwP4hF+48xLOtGkIoZu+9KqmqaRD2PySUbgUFqxcL eNlQ== X-Gm-Message-State: AOAM530lNK9HCf8xwv1lRTjLe1FZZU+USIX1lUD8XqWllsVZx59hhFfF n61BTNnb9mvJoU0anPG45WW84npwh9g= X-Google-Smtp-Source: ABdhPJwx+ggJQrdkcp71Ibd5M0djtSGPf1tKJXfLVJ3y6pVRM0GchpE0eO9BgDfS5GWqnBv2WOcWyQ== X-Received: by 2002:a2e:b5ab:: with SMTP id f11mr10532555ljn.438.1593526035357; Tue, 30 Jun 2020 07:07:15 -0700 (PDT) Received: from localhost (static-193-12-47-89.cust.tele2.se. [193.12.47.89]) by smtp.gmail.com with ESMTPSA id v20sm847212lfe.46.2020.06.30.07.07.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 30 Jun 2020 07:07:14 -0700 (PDT) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Cc: "netdev@vger.kernel.org" Subject: RE: [EXT] Re: [PATCH net-next] net: ethernet: fec: prevent tx starvation under high rx load From: "Tobias Waldekranz" To: "Andy Duan" , "David Miller" Date: Tue, 30 Jun 2020 15:45:51 +0200 Message-Id: In-Reply-To: Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Tue Jun 30, 2020 at 11:47 AM CEST, Andy Duan wrote: > Tobias, sorry, I am not running the net tree, I run the linux-imx tree: > https://source.codeaurora.org/external/imx/linux-imx/refs/heads > branch=EF=BC=9Aimx_5.4.24_2.1.0 > But the data follow is the same as net tree. I've now built the same kernel. On this one the issue does not occur, consistent throughput of ~940Mbps just like you're seeing. Now moving to mainline 5.4 to rule out any NXP changes first, then start bisecting.