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: Can anyone make suggestions for training / learning resources wrt databases.

[Chris Samuel via luv-main]

On Sunday, 18 September 2016 10:54:06 AM AEST h via luv-main wrote:

> I am NOT looking for specific answers to these problems, but rather
> some teaching / groundwork information about relational databases /
> sql / postgis concepts.

I've seen this recommended as an introduction to PostGIS:

http://workshops.boundlessgeo.com/postgis-intro/

There is also this book:

https://www.manning.com/books/postgis-in-action-second-edition

and this Irish university has powerpoint slides of a GIS course online:

http://www.comp.dit.ie/pbrowne/Spatial%20Databases%20SDEV4005/Spatial%20Databases%20SDEV4005.htm

All the best,
Chris
-- 
 Chris Samuel  :  http://www.csamuel.org/  :  Melbourne, VIC

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