From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-qt0-x229.google.com (mail-qt0-x229.google.com [IPv6:2607:f8b0:400d:c0d::229]) (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 0EFB33B29E; Tue, 4 Sep 2018 17:14:21 -0400 (EDT) Received: by mail-qt0-x229.google.com with SMTP id z8-v6so5725522qto.9; Tue, 04 Sep 2018 14:14:21 -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 :content-transfer-encoding; bh=LBgA3V+T+feFfnhKci2TZ+anPGp0yUyFqD1w/wsPMwQ=; b=Vfy/GoWDgmxFA1BxTrDNjMMadw6YD6CjnylPII5rc4hz8ejcWiJTmVxwBPshm+Sq3m n0mWCSSs/G2VkgkCNkj+M7dE/SzR/4JdJ5kRWoNUUzPoCfkqjID1FJoXowHLu7QLAYv1 hNTlz/MG1weh+vaescLRTlpLGYIrfPIlbWo5UVjwMKW2xIO/yDwUT76P9sucZRgzAjOK adIHyQi9GUYQ+0OGIeqVqZQNCabQs4GawyN9i9PwRrx3F3kqCxCfktOxnpWV1q7mr0f1 +/uQVgwVZCBUXTlFr4o0zGehe+ddgbTnRp4qpaiivPlUCJ3ebeok/6PqudxA/lw8/xxd zQ3A== 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:content-transfer-encoding; bh=LBgA3V+T+feFfnhKci2TZ+anPGp0yUyFqD1w/wsPMwQ=; b=IpYVPSnYju4Q+xYgjolQuMGRlwUJNzbC2r2VZ2Nhj9r2Z0IrQHnn+WrLt5toetx9f2 XaWwp3qCL6bHVuDflOoPtwZhIucoWhdyH8sL34nkDuH9Kl9UJTeWZHFqGxPC+tYiajPZ nDg5wo1D657e0wgjwBKYTskHiy2+N1YVCxasds83d6jPvDfoNyVEJ9aUsEpn0O0sefBP +dWRJfukrv5jmYE4Xg2awQ6KryOcSIyUOO7wuU3RyK8GaPu8CuzaKLtaZ/WQScoLAE5S hiXrV3LB/iIvmzPdhkechwz1JHlCfCX3N6V15SZ9qCrVWkml1RAmKoK0JFRoMbIV1WIk EYjA== X-Gm-Message-State: APzg51CTdwlKoqIExpB1GCOlwSh6ph3fA0SgB3JRV7Bav3PNdoLuRPv8 w773KchpKfYDO+Oku5W+Ddk7jjGtK6oF3st/f3v+KA== X-Google-Smtp-Source: ANB0VdZPtJku/zy30U3I15XgWZQbqyqnqQuhjmIDponfxPrswHVTsQLXn2DyBzmXA+E2lu+9fFYkXxUEBYFXxiW0DkU= X-Received: by 2002:a0c:818b:: with SMTP id 11-v6mr31012485qvd.129.1536095660055; Tue, 04 Sep 2018 14:14:20 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Dave Taht Date: Tue, 4 Sep 2018 14:14:07 -0700 Message-ID: To: Cake List , cerowrt-devel@lists.bufferbloat.net Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: Re: [Cerowrt-devel] apu2 sqm/htb issue + a minor win for speeding up fq_codel itself X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 04 Sep 2018 21:14:21 -0000 making htb's cburst and burst parameters 64k gets the APU2 up to where it can shape 900mbits. 3 ksoftirq handlers start getting cpu time, and we end up 54% idle to achiefe that. I should really go around running my own old code. I was deeply involved in sqm when we still had to run at sub 200mbit levels. since then it's been mostly tbf (burst 64k) + fq_codel or cake, and me ignoring various bug reports about it not scaling well enough at higher rates. On Tue, Sep 4, 2018 at 12:59 PM Dave Taht wrote: > > less than scientifically (via monitoring top) - on the apu2 > > 100Mbit sqm (htb + fq_codel) > > fq_codel_mainline | fq_codel_fast > idle 78.8 | 83.5 | > si 20 | 16.1 | > > Yea! But: > > 900Mbit sqm (htb + fq_codel) > > fq_codel_mainline | fq_codel_fast > idle 74.4 | 74.4 | > si 25 | 25.1 | > > Here: completely bottlenecked on ksoftirqd - and I only get 340Mbits > out of the 900mbit setting. quantum 96k and burst of 15000. Haven't > fiddled with higher values yet... > > > > -- > > Dave T=C3=A4ht > CEO, TekLibre, LLC > http://www.teklibre.com > Tel: 1-669-226-2619 --=20 Dave T=C3=A4ht CEO, TekLibre, LLC http://www.teklibre.com Tel: 1-669-226-2619