[Cake] Beating bufferbloat

Fri Apr 29 10:58:54 EDT 2016

I am using this build. one thing that failed twice recently was the
dnscrypt stuff (for no reason I can discern). I ended up disabling it
this morning.

On Sun, Apr 24, 2016 at 3:37 AM, Arie <nospam at ariekanarie.nl> wrote:
> 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>)
>>
>> > 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>> 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>
>> >>> 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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>> Cake at lists.bufferbloat.net
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>>
>
>
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-- 
Dave Täht
Let's go make home routers and wifi faster! With better software!
http://blog.cerowrt.org