From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-x22f.google.com (mail-qt0-x22f.google.com [IPv6:2607:f8b0:400d:c0d::22f]) (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 95AFD3CB35 for ; Tue, 11 Sep 2018 04:27:41 -0400 (EDT) Received: by mail-qt0-x22f.google.com with SMTP id l42-v6so2024597qtf.13 for ; Tue, 11 Sep 2018 01:27:41 -0700 (PDT) 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:content-transfer-encoding; bh=isNwOrcO7uBSmWOGUHP+P6hu6cC8bhDkLjXOjIkuIHA=; b=q8dq6i+UgzNi42LuPSodVQCdfJoDCWJpNtlTn1tJ5MF8HkQoq8vfueYEVMBguJ7Glx JFG688bUyXrHAEgB/JEFuVbejFKSOTWfOD0Zcsi87B6PmSwIbrC5bVRRZ8uB6CNn0UVk Y3HlW8PE3YeOWuR9nfoaTa5aEbSFQRydiT/m8bLSeqxDwD9oXqDLw37uJ7AmwJZ9ckwD h0lEhtUMGxTDCPhnrKaeYIo/9yV0k/43uTMIWW48HPBsPTfX773aksED2wykhS6DtrVr +nI6DNXitsHz0Zk62gqWbBOoAtlaWtZHMQNAvLs1LVEAyQWqE43hUiJ1NeIr2Zs/c4pc Q/oQ== 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:content-transfer-encoding; bh=isNwOrcO7uBSmWOGUHP+P6hu6cC8bhDkLjXOjIkuIHA=; b=CRbm/sVvo3YYptOBmr8C+iW5fOzsZUhXWtmplavqIyacM7ajjTcM7CgnnyJzNAIy0y 5qJVJP8wqoMNHgdZGt5xHP60KmeQ549TGyd+bKNH/6epPvtUJXqqz1WDMDsWsJWwRxh8 nmH1WL9pRrzpRghJXffSz2DlGRrinrQ1wxrFfst84WYjvIS2UyAamVSRFVFX/hPS05B6 a6B/iDgoQJOv04xEtq4x0NF+PpxKItPbx50WnM1TISLOBUF8LgdOG+bqDqORneBi+7aJ 7f0O9M42bo9I4CuLnEv9bCvsCqI3Xj4HC8FQONLiSmSisnLqIgPo2UPONX+YWhcL5tF2 4qJA== X-Gm-Message-State: APzg51DX6EhF6k8UiZtBQpoArbq4EvkgohBZTTRh+E9/9n4KyJ37JBLb d53waQ5K0yhe5bzr9SWDF21wohx2AKcfcjDvItM= X-Google-Smtp-Source: ANB0VdaZhdpfsmco+T6RqsSY28VrcJPA/lFdtRhfLEXC6Zm51oWTDWeAV5rImV5cJQbFkGfgu1UbXS8AlAjJORj5uEs= X-Received: by 2002:a0c:bb95:: with SMTP id i21-v6mr17932754qvg.158.1536654461138; Tue, 11 Sep 2018 01:27:41 -0700 (PDT) MIME-Version: 1.0 References: <87zhwxzh8o.fsf@toke.dk> <139B295B-7371-43DE-B472-DE629C9B8432@heistp.net> <87efe65wol.fsf@toke.dk> <6C556301-015B-4903-AE5A-F22D3517FFCC@heistp.net> <79F47FB1-6B00-4753-930B-950FB8CD3850@gmx.de> In-Reply-To: From: Dave Taht Date: Tue, 11 Sep 2018 01:30:54 -0700 Message-ID: To: Sebastian Moeller Cc: Pete Heist , Cake List Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: Re: [Cake] Cake vs fq_codel and c/burst on an ER-X bridge X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 11 Sep 2018 08:27:41 -0000 On Tue, Sep 11, 2018 at 1:20 AM Sebastian Moeller wrote: > > Hi Dave, > > > On Sep 11, 2018, at 10:20, Dave Taht wrote: > > > > What I "fixed" was on the apu2 with the burst/cburst change, I went > > from completely bottlenecked on one softirq to having 3 eat cpu, and > > from 400mbps to 900mbps. Now, that's a quad core and the e1000 (?) > > driver. The edgerouter X is a dual core, and you did see a small > > improvement in throughput, but I'd hoped for more. > > Well, assuming my intuitions about how burst/cburst ameliorate the issue,= we might simply have to say accept an additional 5ms delay/jitter to make = it perform better. It is basically the same batching approach that always h= elps throughput of a cyclic process can not be repeated often enough, simpl= y do more per iteration... > > Best Regards > Sebastian > I buy what you are saying. I just wished it was a magic bullet for other than the apu2! --=20 Dave T=C3=A4ht CEO, TekLibre, LLC http://www.teklibre.com Tel: 1-669-226-2619