Re: TCP rate/congestion control

[Julien Goodwin via luv-main]

On 19/09/16 15:23, Russell Coker via luv-main wrote:
> On Monday, 19 September 2016 11:46:00 AM AEST Tim Connors via luv-main wrote:
>>> https://patchwork.ozlabs.org/patch/671069/
>>
>> Damn, that's so obvious it must have taken a genius to think it up :)
> 
> Signed-off-by: Van Jacobson 
> Signed-off-by: Neal Cardwell 
> Signed-off-by: Yuchung Cheng 
> Signed-off-by: Nandita Dukkipati 
> Signed-off-by: Eric Dumazet 
> Signed-off-by: Soheil Hassas Yeganeh 
> 
> The first line in the signed-off list is noteworthy, someone who didn't get a 
> keynote slot at an LCA...  ;)

They're all pretty good, Van obviously has a history with TCP, and just
a few weeks back Eric & Neal helped me by sending some quick patches
upstream for a hard-to-debug issue. (I'm sure the rest are awesome too,
I just haven't worked with them)
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Re: TCP rate/congestion control

[Russell Coker via luv-main]

On Monday, 19 September 2016 11:46:00 AM AEST Tim Connors via luv-main wrote:
> > https://patchwork.ozlabs.org/patch/671069/
> 
> Damn, that's so obvious it must have taken a genius to think it up :)

Signed-off-by: Van Jacobson 
Signed-off-by: Neal Cardwell 
Signed-off-by: Yuchung Cheng 
Signed-off-by: Nandita Dukkipati 
Signed-off-by: Eric Dumazet 
Signed-off-by: Soheil Hassas Yeganeh 

The first line in the signed-off list is noteworthy, someone who didn't get a 
keynote slot at an LCA...  ;)

-- 
My Main Blog http://etbe.coker.com.au/
My Documents Bloghttp://doc.coker.com.au/

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Re: TCP rate/congestion control

[Toby Corkindale via luv-main]

Thanks Julien, that looks quite interesting.
I'll try to remember to look out for this in the mainstream kernels in the
future.

On Sat, 17 Sep 2016 at 21:56 Julien Goodwin via luv-main <
luv-main@luv.asn.au> wrote:

> On 16/09/16 18:33, Julien Goodwin via luv-main wrote:
> > On 16/09/16 11:02, Toby Corkindale via luv-main wrote:
> >> I noticed that Windows 10 now uses CTCP as the default TCP
> >> congestion/rate control algorithm, but Linux still defaults to the old
> >> Cubic algorithm.
> >>
> >> CTCP doesn't appear to be available on Ubuntu LTS at the moment, but
> >> there's a whole host of others to choose from.
> >> Has anyone here worked out which is the best one to use on typical
> >> consumer internet links in Australia?
> >
> > Over and above the rate control algorithm Linux has a bunch of features
> > that make it work much better than a to-the-spec cubic implementation
> > (not surprising with a bunch of large content providers like $EMPLOYER
> > submitting their fixes upstream).
> >
> > Things like TCP pacing and the work from the bufferbloat folk have
> > really improved things.
> >
> > https://fasterdata.es.net/host-tuning/linux/fair-queuing-scheduler/
>
> ...and something that finally went public overnight is a new TCP rate
> control algorithm from some of the folk at $EMPLOYER, I for one am very
> much looking forward to this hitting upstream and then into a Debian
> kernel.
>
> https://patchwork.ozlabs.org/patch/671069/
>
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Re: TCP rate/congestion control

[Julien Goodwin via luv-main]

On 16/09/16 18:33, Julien Goodwin via luv-main wrote:
> On 16/09/16 11:02, Toby Corkindale via luv-main wrote:
>> I noticed that Windows 10 now uses CTCP as the default TCP
>> congestion/rate control algorithm, but Linux still defaults to the old
>> Cubic algorithm.
>>
>> CTCP doesn't appear to be available on Ubuntu LTS at the moment, but
>> there's a whole host of others to choose from.
>> Has anyone here worked out which is the best one to use on typical
>> consumer internet links in Australia?
> 
> Over and above the rate control algorithm Linux has a bunch of features
> that make it work much better than a to-the-spec cubic implementation
> (not surprising with a bunch of large content providers like $EMPLOYER
> submitting their fixes upstream).
> 
> Things like TCP pacing and the work from the bufferbloat folk have
> really improved things.
> 
> https://fasterdata.es.net/host-tuning/linux/fair-queuing-scheduler/

...and something that finally went public overnight is a new TCP rate
control algorithm from some of the folk at $EMPLOYER, I for one am very
much looking forward to this hitting upstream and then into a Debian kernel.

https://patchwork.ozlabs.org/patch/671069/



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Re: TCP rate/congestion control

[Julien Goodwin via luv-main]

On 16/09/16 11:02, Toby Corkindale via luv-main wrote:
> I noticed that Windows 10 now uses CTCP as the default TCP
> congestion/rate control algorithm, but Linux still defaults to the old
> Cubic algorithm.
> 
> CTCP doesn't appear to be available on Ubuntu LTS at the moment, but
> there's a whole host of others to choose from.
> Has anyone here worked out which is the best one to use on typical
> consumer internet links in Australia?

Over and above the rate control algorithm Linux has a bunch of features
that make it work much better than a to-the-spec cubic implementation
(not surprising with a bunch of large content providers like $EMPLOYER
submitting their fixes upstream).

Things like TCP pacing and the work from the bufferbloat folk have
really improved things.

https://fasterdata.es.net/host-tuning/linux/fair-queuing-scheduler/
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