From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ot1-x344.google.com (mail-ot1-x344.google.com [IPv6:2607:f8b0:4864:20::344]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 3B0843B29D for ; Tue, 17 Nov 2020 19:00:17 -0500 (EST) Received: by mail-ot1-x344.google.com with SMTP id 79so21739otc.7 for ; Tue, 17 Nov 2020 16:00:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=dE3yhvbf3205Qe4cPPAPQX//f87xly5GgqnVzLAittY=; b=EsnoJpvjiXVIHipXJsGpagZxV10EVYUaIRvxqBBumYOhJh38wYcft5zBH6marBsvbI 2YjFfVOishQmv4DQ3ehbX3g4LN098f/3RVRNoiAVRv7o788S1keOFKnscFKlFxnzA0lM MPSrG0T19YHB9NRdsoFSHjQw8VmgAt1pEhtaat9n1P3bWkmUWzR/G6Rxmp7DsBOPtFWs fCoy98Ch8l0dMqH3MccDkl+HJz8l0pD8yL/Wvkhyi7XvjO/All2qEaNn/peNSrRaOl8C wXuaj5/LiwhFJEyxG6bwir15hBQC1xOtmuxBXMoh7C3x2A+OqR6gAjBXUjORUAyiWYyA Na0A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=dE3yhvbf3205Qe4cPPAPQX//f87xly5GgqnVzLAittY=; b=lM3+1aFOh/vU7wqsNhm+yg6Q0oLJWUjVfmsTmPDbe192Qz2xazo0WuWB82PRVpoqLM hjARzCXXXxFGA16K9HLyKJgSk2T2DxSdlYNlniecNg+VFf4rDfyGwfKa8SxgCzXlD8t/ a+QYz5UTk9INFUb4SH/p8abKCBQDg7pT+F+zB7EnWnM3R0NUWCAd0dVY8Jxv0SHYeLFn 2A4t4E1vWTg9Ms7d6SXkQim58aQilMDUzJm0h4//EoKIu9IhyZMPWBPQupxsd9LM4KNO UCYoInwJklfQfqbyfYflhZ60J8lXlrrWcbo4Okl1nMJN1nkML69gM7v1OBe8LuNXmHDf y41Q== X-Gm-Message-State: AOAM530iGU9WIvEAjKjbKDJz3XfenkT89IYfxx3xs0uCnABP7T+O6w0k OdzRxUm2LxQnXC+k/sdOc8duK2rup7XMDFtTOTA= X-Google-Smtp-Source: ABdhPJzblijGCPFZ3EynYoQ/5ZPoP+v/9knRkPGOOIlB8fsE3uFFgoVjZHkwqVwxvg49H2sRsExWVsDAMN0GI0cNpk0= X-Received: by 2002:a9d:4c18:: with SMTP id l24mr4657697otf.291.1605657616338; Tue, 17 Nov 2020 16:00:16 -0800 (PST) MIME-Version: 1.0 References: <32080.1597787724@localhost> <3A782CD0-01F1-40FA-9DFD-B969BD11A566@gmail.com> <87blhq3pdb.fsf@toke.dk> <875z7ujgxe.fsf@toke.dk> In-Reply-To: <875z7ujgxe.fsf@toke.dk> From: Daniel Sterling Date: Tue, 17 Nov 2020 19:00:05 -0500 Message-ID: To: =?UTF-8?B?VG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2Vu?= Cc: Jonathan Morton , Michael Richardson , bloat Content-Type: text/plain; charset="UTF-8" Subject: [Bloat] openwrt e1000e (was: Re: cake + ipv6) X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Nov 2020 00:00:17 -0000 > Daniel Sterling writes: > In my case: I am happy to report this is *not* a bug or an issue with > cake, as I originally thought. I am able to reproduce the issue I was Wanted to give an update on this. All my issues (odd latency, slow throughput, etc) went away when I switched from the in-kernel e1000e driver to Intel's NAPI driver. That is, I compiled e1000e driver 3.8.7-NAPI from https://sourceforge.net/projects/e1000/files/e1000e%20stable/ , instead of using the mainline e1000e driver from kernel 5.4.75 in openwrt dev. After switching to the Intel driver, my internet has been rock solid. My NIC from lspci: 01:00.0 Ethernet controller: Intel Corporation 82574L Gigabit Network Connection This is the "Intel EXPI9301CT Desktop Adapter Gigabit" from newegg. I bought it figuring it would have good linux support. *grin* And it does, but not with the mainline driver it seems. The in-kernel driver doesn't (I assume) support NAPI -- so very possibly this is due to the NAPI support in the out-of-tree driver (vs being an issue with the driver itself) -- Dan