[Tilecache] how to speed up tilecache seeding in Tilecache_seed.py

[Alireza Kashian]

Hi fredj

Yes. I have done exactly same as you say.

But are you using tilecache_seed.py code to seed? if yes, look at the output
screen, you see that tiles are generated one by one..
in my case, each tile takes 1 second to generate and we have like 40 layers
in our map file..so I know it needs high computing power to send each
request seperately to tilecache...I was hoping that tilecache_seed.py could
jump another 11 tiles and request like 1 - 12 - 23 - 34 - 45 ....
because when it calls for 1, it generate all 121 tiles around it...when it
calls 12, it generate all tiles around 12...and so on..
so it doesn not need to call for: 1-2,3,4,5,6,7,8..........

thanks
AlirezaOn Wed, Jun 3, 2009 at 7:29 PM, Frederic Junod <
frederic.junod at camptocamp.com> wrote:

> Hi,
>
> The meta tiling system works for me with the trunk version [1].
> Make sure you have the:
>  metaTile=true
>  metaSize=11,11
> in your layers options.
> Meta tiling is off by default even if you have a metaSize.
>
> Regards,
> fredj
>
>
> PS: lucky you; I have more that 9'000'000 tiles in my last level :-)
>
> [1] http://svn.tilecache.org/trunk/tilecache
>
> On Wed, Jun 3, 2009 at 3:58 PM, Alireza Kashian
> <alireza.kashian at gmail.com> wrote:
> > Hi.
> > I would like to know how we can making tiles faster in tilecache_seed.py
> >
> > The issue is that tilecache_seed.py tries to make tiles ONE by ONE..
> > so for example, in our case, in last zoom levels we have 300,000 tiles
> and
> > each tile is generate in 1 second because our Map File is very complex
> and
> > parsing and making queries to PostGIS takes time.
> >
> > Actually MetaTiling is a very good solution, but the problem is that I
> feel
> > Tilecache_seed.py does its job without attention to Meta Tiling..for
> > example, our MetaTile is 11x11...so 121 Tiles are geneated in like 3-4
> > seconds...but When I run Tilecache_seed.py . I see from the log that it
> > makes tile requests one by one which takes like 300,000 seconds for just
> one
> > of our zoom levels..
> > Our map file is large , it is like 400 Kbyte..so I feel how hard it is to
> > make queries 300,000 times for making 300,000 tiles :)
> >
> > How can we help Tilecache_seed.py to benefit from MetaTile config in
> > Tilecache.cfg.
> >
> > Thanks
> > Alireza
> >
> >
> > _______________________________________________
> > Tilecache mailing list
> > Tilecache at openlayers.org
> > http://openlayers.org/mailman/listinfo/tilecache
> >
> >
>
>
>
> --
> Frédéric Junod
> Camptocamp SA
>
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