From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-x230.google.com (mail-pa0-x230.google.com [IPv6:2607:f8b0:400e:c03::230]) (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 4B6643B25E; Wed, 25 May 2016 02:40:37 -0400 (EDT) Received: by mail-pa0-x230.google.com with SMTP id tb2so14680471pac.2; Tue, 24 May 2016 23:40:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-transfer-encoding; bh=51FK7j02Tf2hU1DZ+lB0DzvNUiULdkUR60AQGP/Yyrw=; b=RWRYKxLSh1fK1xxNt5zGf3ka3DcO4cbtyw4uxp868U5D0TG5/N/Tq7TEsms3hkkeYk AIgzdDWkNIwLYfvAKmqvIIjgZjdhAdQUHMB6+hyMKG6WJ+Z29NrbOnpD7l1ou6Q3AD7Z Fi6eygK5e8eyArrgWmfW+z4xEJ1jF/CAidL8Wyq/CfL39UuPZ0gyxaR8l1tUgySpYJTz P+IZsNSiiidEb8i/YIt857tviaOddUZm0UnYxvKjmuW/qIueev0xdx8jSV301P6lpmjz 9YO5S/FhYINgvyOJc9nnSF2pZ5m+rWioWw+JPpfSBoQusQ/F+Y60DpQa0wWrgMbQ5/Wk Ajfw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-transfer-encoding; bh=51FK7j02Tf2hU1DZ+lB0DzvNUiULdkUR60AQGP/Yyrw=; b=Fxstj4hrf70pvQW7iQ7v6xD4/SLcGDxif79sh09Z/XSGAmlYEYQ5TqAQequ4Mv3WMd r9UlqPijYji1Gne3abNHNwB60aqDr9YKGn+SxD65fmt9patebQkfWRg1yWTf02yBxfrs fpQoLu6dYfjTH84DTA4MYxDwWlVTcNSo+ppoQB2p29lMiIksOUzNcxIGMpcqqat+yxrJ KcR7dt0XtdR5c9TrRp6qUHIIuCzHDmh2q4kYQsS6P0zBgXuu5LX3hEkEXLZM6Wek1pHl 67UrsDy+0qZ/3I1xgJT/0lX6kthcQ0+UOeLnIFWGnc9HA19KV5spAMtFf52YrJKhP6eI ybCA== X-Gm-Message-State: ALyK8tInS7oJ5HO9JeMScqtV2hcXBugTPwi1B7MFDOv1CUCQ6eptc2m7L9wSuR50ru9AYakF9jSU0C6mpsSj+w== MIME-Version: 1.0 X-Received: by 10.66.123.37 with SMTP id lx5mr3271122pab.101.1464158436348; Tue, 24 May 2016 23:40:36 -0700 (PDT) Received: by 10.66.163.129 with HTTP; Tue, 24 May 2016 23:40:36 -0700 (PDT) In-Reply-To: References: <22371476-B45C-4E81-93C0-D39A67639EA0@gmx.de> <857AEE56-E7DB-4981-B32E-82473F877139@gmail.com> <8AB0D25D-C1CA-45F1-889E-2F73CF8C44F7@gmail.com> <323AFC22-A092-4F59-8197-AF21EF73FD58@gmail.com> <274D3A0FA900FD47AA6B56991AAA32FDC5529FC8@wtl-exchp-1.sandvine.com> <574478B4.7080103@taht.net> <9F552756-C144-4C69-88F5-5F883A852DBB@gmail.com> Date: Wed, 25 May 2016 10:40:36 +0400 Message-ID: From: Loganaden Velvindron To: Dave Taht Cc: Jonathan Morton , cake@lists.bufferbloat.net, "codel@lists.bufferbloat.net" Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: Re: [Cake] [Codel] Proposing COBALT 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: Wed, 25 May 2016 06:40:37 -0000 On Tue, May 24, 2016 at 8:02 PM, Dave Taht wrote: > On Tue, May 24, 2016 at 9:56 AM, Jonathan Morton = wrote: >> >>> On 24 May, 2016, at 18:52, Dave T=C3=A4ht wrote: >>> >>> My last attempts with cake the way it was had it performing miserably a= t >>> longer RTTs (try 50ms) vs codel or fq-codel - as in half the throughput >>> achieved by codel, at that RTT. >> >> Was that before or after I found and fixed the invsqrt cache bug yesterd= ay? > > That was back in december, when I had also ripped out the invsqrt > cache entirely with things like "bcake". > > (I still do not see any point to the invsqrt cache, nor ) > > I did some informal testing of recent cakes about a month back.. and > went back to fq_codel. cake ate too much cpu, queue depth was longer, > throughput at 50ms or longer, worse. > > I decided that I'd much rather work on wifi. > > Please test at longer rtts. > In African countries, we have large RTTs to Europe/US, and I think that this is going to be an interesting testbed :)