From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ob0-x233.google.com (mail-ob0-x233.google.com [IPv6:2607:f8b0:4003:c01::233]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 22B1D21F308 for ; Mon, 7 Sep 2015 13:37:11 -0700 (PDT) Received: by obuk4 with SMTP id k4so68574554obu.2 for ; Mon, 07 Sep 2015 13:37:11 -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-type:content-transfer-encoding; bh=dIpCFc4zGGZ3QOe/bc2KET92QdyJLWeGtVw5EPbmYZ8=; b=TuzCUWgtb7D19q4h/VwnpNe6Eeh5XjAVT/flfheooSO7aSk3xb+u7PPuulwanY4vXA YTQp86C81FRGHcaenJJ1wFx5ov2kvrlczf0JXxP0vTd0V13nq/C7SlHb7oquvJ79u0R4 QIDbMBz1TcqZXEgecEkmkBKA42NS5aeyu0ihslJhDsUyRDER0Jc8QJeDCsZ2VQyxRN1Z AJQLrpFXYY7kSm+PVO1gZhNP2ElNNBxoDnWzjJwxEIFDao0EXQZ0asIjXxH7xQHGBsco votTP7k9koW04+8cEHenYLix2dp8Hvcem/hgXqgbr0qk5tu3BKg1MzNRDuDYgC+f/mpK rx3w== MIME-Version: 1.0 X-Received: by 10.182.44.198 with SMTP id g6mr15995460obm.25.1441658231016; Mon, 07 Sep 2015 13:37:11 -0700 (PDT) Received: by 10.202.50.135 with HTTP; Mon, 7 Sep 2015 13:37:10 -0700 (PDT) In-Reply-To: References: Date: Mon, 7 Sep 2015 13:37:10 -0700 Message-ID: From: Dave Taht To: Sebastian Moeller Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: cake@lists.bufferbloat.net, Felix Fietkau Subject: Re: [Cake] cake work needed for openwrt merge X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Sep 2015 20:37:34 -0000 there has been interest from at least one satcom provider in cake. On Mon, Sep 7, 2015 at 1:35 PM, Sebastian Moeller wrote: > Hi Benjamin, > > On Sep 7, 2015, at 21:43 , Benjamin Cronce wrote: > >> If you're only concerned about the magnitude, fixed-line based Internet = connections only have two magnitudes. Local(10ms) and world-wide(100ms). My= break down goes like this for datacenters from my home connection. >> 10ms Chicago >> 30ms New York City and Washington DC >> 45ms Houston and Miami >> 60ms San Jose and San Francisco >> 70ms LA, San Diego, and Seattle >> 90ms London and Paris >> 115ms Hawaii >> 120ms Frankfurt and Switzerland >> 150ms Japan >> 170ms Moscow >> 190ms New Zealand >> 210ms Sao Paulo(Brazil) >> 215ms Sydney >> 220ms Hong Kong and Dubai(United Arab Emirates) >> 250ms Singapore, China, India, Cape Town(South Africa) >> >> As you can tell, terrestrial latency doesn't have many flavors except wh= en congestion or horrible routing is involved. In my case, my 95th percenti= le of high RTTs is around 20ms because of CDNs and my 80th is closer to 10m= s. Similar with video games, except Eve Online which is hosted in London. I= n my case, a 100ms RTT is from Hawaii to Europe. > > Good point, so it is rather =E2=80=9Clongest realistic RTT=E2=80= =9D what we are after. My point was not about what the real RTTs are (even = though your results are interesting in themselves) but how to name the para= meter to not confuse novice users=E2=80=A6 and my hunch is RTT is not the b= est description here=E2=80=A6 but I lack a better snappy phrase > > Best Regards > Sebastian > >> >> If you're only concerned about magnitudes, then only need a few options = like fixed-line terrestrial mode and satellite mode for your main options. = If I was to choose a custom interval/RTT for myself without doing a proper= measurement, probably 40ms, assuming that gives any benefit over the defau= lt 100ms >> >> On Mon, Sep 7, 2015 at 6:21 AM, Sebastian Moeller wrot= e: >> Hi Dave, >> >> On Sep 7, 2015, at 12:45 , Dave Taht wrote: >> >> > ** expose the interval parameter for longer rtts. >> > >> > In fact, I think using the word "rtt" might be saner than "interval=E2= =80=9D. >> >> Not sure, RTT will make a lot of people nervous about this being= basically a run-time constant while actual RTTs of the flows range from a = few ms to several 100s. To not confuse these people we would need something= like =E2=80=9Ctypical average/median RTT=E2=80=9D or =E2=80=9Clongest real= istic RTT=E2=80=9D or even =E2=80=9Ccenter of realistic RTT range=E2=80=9D = that conveys that this is more about order of magnitude than any real RTT. = It could also be that people in general are much better about this and I ju= st got a specific subset in the crowd I try to help getting sqm-scripts up = and running ;) >> >> >> Best Regards >> Sebastian >> >> > We could also add shortcuts like LEO, GEO, GTO, L1-L5, MOON, MARS. :) >> > >> > >> > On Sun, Sep 6, 2015 at 3:35 PM, Dave Taht wrote: >> >> In discussing with felix what is needed for cake to go into openwrt >> >> trunk, we came up with the following list: >> >> >> >> * Cake work needed >> >> ** Add squash option (besteffort + squashing diffserv) >> >> ** Fix diffserv >> >> ** Add man page >> >> ** Clean up patches to only do cake >> >> *** Reformat for kernel_style >> >> *** IProute patches for mainline iproute >> >> ** Submit as a single patch to openwrt for each >> >> ** cake patches goes into the openwrt iproute directly >> >> ** continues to be built externally as kmod-sched-cake >> >> ** Needs update to the new kernel hashing api >> >> ** Openwrt is stablizing for now, on linux 4.1 >> >> ** CC is essentially done, but there will a CC.1 release at some poin= t >> >> ** Add better statistics (like active_flows) - have part of this alre= ady >> >> >> >> >> >> -- >> >> Dave T=C3=A4ht >> >> endo is a terrible disease: http://www.gofundme.com/SummerVsEndo >> > >> > >> > >> > -- >> > Dave T=C3=A4ht >> > endo is a terrible disease: http://www.gofundme.com/SummerVsEndo >> > _______________________________________________ >> > Cake mailing list >> > Cake@lists.bufferbloat.net >> > https://lists.bufferbloat.net/listinfo/cake >> >> _______________________________________________ >> Cake mailing list >> Cake@lists.bufferbloat.net >> https://lists.bufferbloat.net/listinfo/cake >> > --=20 Dave T=C3=A4ht endo is a terrible disease: http://www.gofundme.com/SummerVsEndo