[Cake] Beating bufferbloat

Sun Apr 24 06:37:46 EDT 2016

If you want a very recent cake version, you could use my build from here:
http://ariekanarie.nl/openwrt/mvebu/ It's based on the very feature heavy
OpenWRT build by trondah ( https://forum.openwrt.org/viewtopic.php?id=50914
), but using more recent cerowrt and cake stuff.

You'll want to flash the shelby factory.img if still on stock firmware,
else shelby sysupgrade.tar.

On 24 April 2016 at 00:22, Alec Robertson <alecrobertson13 at gmail.com> wrote:

> Dear All,
>
> I’ve realised that I have been responding to Kevin rather than to the
> mailing list - my bad!
>
> I think I will purchase a Linksys WRT1900ACS as it seems to be fairly well
> regarded and is easily accessible in the UK.
>
> How do I go about setting up Cake on it?
>
> --
> Alec Robertson
>
> On 23 April 2016 at 9:00:52 pm, Alec Robertson (alecrobertson13 at gmail.com)
> wrote:
>
> Dear Kevin,
>
> I did look at the Linksys WRT1200AC but it seems to get some rather poor
> reviews on Amazon?
>
> --
> Alec Robertson
>
> On 23 April 2016 at 8:58:02 pm, Kevin Darbyshire-Bryant (
> kevin at darbyshire-bryant.me.uk) wrote:
>
>
>
> On 23/04/2016 20:42, Alec Robertson wrote:
>
> Dear Kevin,
>
> That’s very useful thanks.
>
> You say the TP-LINK Archer C7 should *just* be okay. What could I get
> that I know will last me for a long time? What’s got good WiFi range too?
>
> The honest answer is I've absolutely no idea and I'm in that dilemma
> myself.  There's a remake of the linksys WRT range (WRT1200????) that
> apparently is very powerful, I guess the issue is how far along OpenWrt
> is.  I might have the wrong end of hte stick but I think Dave Taht may have
> something working.
>
> Apologies, I'm not really a mine of information.
>
>
> I’m using powerline at the moment but fed up with it disconnecting. I
> think it is probably the TP-LINK adaptors I am using (known issue
> apparently) but wiring up the house is unpractical at the moment. I don’t
> think there is a better solution really.
>
> --
> Alec Robertson
>
> On 23 April 2016 at 8:00:00 pm, Kevin Darbyshire-Bryant (
> kevin at darbyshire-bryant.me.uk) wrote:
>
> Hi Alec,
>
> I'm not familiar with TalkTalk but they sound like they do similar
> things to Sky - Sky just need a 'login ID' as part of the DHCP request
> packet (which funnily enough are the PPPoA/E login details)
>
> In terms of speed sacrifice, erm, none really. I've set 40mpbs incoming
> and 9990kbps for outgoing on a 40000/9999 link as reported by the
> modem. Probably critically I've set the packet overheads to 12, and I
> now can't remember why... there's an on-wire vlan tag (4 bytes) but the
> reason for the other 8 have fallen out of the brain cell.
>
> I've a semi-regular backup job overnight that on a bad day overruns into
> the day - a week or so ago it ran for something like 2 days and I had
> absolutely no idea - thinkbroadband's ping monitor was registering
> something like an extra 5mS latency over the baseline, peaks were
> something like 25mS - backup stats and openwrt's stats package were
> registering the full 10mbps uplink in use during that time.
>
> Does that help?
>
> Kevin
>
>
>
>
> On 23/04/16 19:40, Alec Robertson wrote:
> > Dear Kevin,
> >
> > I am on TalkTalk which uses IPoE, so no PPPoE use at all, as far as I
> > know. I certainly haven’t ever configured login details.
> >
> > How much speed do you have to sacrifice on your connection to
> > eliminate bufferbloat?
> >
> > --
> > Alec Robertson
> >
> > On 23 April 2016 at 10:46:35 am, Kevin Darbyshire-Bryant
> > (kevin at darbyshire-bryant.me.uk <mailto:kevin at darbyshire-bryant.me.uk>
> <kevin at darbyshire-bryant.me.uk>)
>
> > wrote:
> >
> >> Hi Alec,
> >>
> >> A brief appearance from me whilst I have a spare few seconds.
> >>
> >> Not stupid!
> >>
> >> There’s an obvious question: Why are Billion still shipping buffer
> >> bloated devices? Have they been sent graphs/demos/logs of how their
> >> kit is faulty?
> >>
> >> To offer some hopefully constructive pointers: For FTTC service I’m
> >> guessing you’ll be using the Billion as a vdsl modem. Who’s the ISP?
> >> AFAIK anyone other than Sky will need to run PPPoE and hence hit the
> >> 1492 MTU restriction *unless* the Billion supports mini jumbo frames
> >> on the ethernet side and the PPPoE MTU extension (the rfc number
> >> escapes the brain at the moment) Sky don’t use PPP and just run
> >> ethernet frames over PTM…..the way it should be. The incoming
> >> packets from ISP to you are policed at something close to sync rate,
> >> this is part of the BT specification. The uplink of course can be as
> >> bloated as hell ;-)
> >>
> >> I use an Archer C7 with BT’s equally horrendously bloated HG612 vdsl
> >> modem on a 40/10 link with sky as my isp. In terms of CPU usage it’s
> >> about 1% per megabit so a full 40/10 uses around 55% cpu, I think
> >> there’s enough for your 60/20…just.
> >> https://middling.me.uk/blog/2015/03/customising-openwrt-to-my-needs/
> >> offers further advice which I found useful.
> >>
> >> Kevin
> >>
> >>
> >>
> >>
> >>> On 22 Apr 2016, at 23:01, Alec Robertson <alecrobertson13 at gmail.com
> >>> <mailto:alecrobertson13 at gmail.com> <alecrobertson13 at gmail.com>> wrote:
> >>>
> >>> Hi all,
> >>>
> >>> I’ve been out of the bufferbloat game for a while and want to try
> >>> and beat it once again.
> >>>
> >>> I’ve got an FTTC connection (UK) which I get around 60Mbps on but
> >>> with horrible bufferbloat on my Billion 8800NL. What router should I
> >>> get that can run OpenWRT and handle this connection? Do the newest
> >>> builds of OpenWRT have cake built-in now via sqm-scripts or would I
> >>> need to install this manually. If so, how would I do this?
> >>>
> >>> Would appreciate any help and apologies if I come off in any way
> stupid.
> >>>
> >>> --
> >>> Alec Robertson
> >>> _______________________________________________
> >>> Cake mailing list
> >>> Cake at lists.bufferbloat.net <mailto:Cake at lists.bufferbloat.net>
> <Cake at lists.bufferbloat.net>
> >>> https://lists.bufferbloat.net/listinfo/cake
> >>
>
>
> ------------------------------
>
>
> --
> Thanks,
> Kevin at Darbyshire-Bryant.me.uk
> M: +44 7947 355344 H: +44 1256 478597
>
>
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>
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