On Wed, Apr 1, 2015 at 4:03 PM, Nachtigall, Jens (init) <
jens.nachtig...@init.de> wrote:
> Hi,
>
>
>
> On Wed, Apr 1, 2015 at 11:49 AM, Nachtigall, Jens (init) <
> jens.nachtig...@init.de> wrote:
>
> …and would it help to set the default meta tiling settings to 20x20
> instead of 4x4 – or is this only relevant when GeoServer “asks” for tiles
> but not for seeding?
>
>
>
> Yes, I believe that would help, if you don't split the data, because we
> would end up making less reads. But it would still be really inefficient
> compared to a version
>
> where the data has been split.
>
>
>
> Increasing the meta tiling really helps a lot. Thanks! Can this be
> increased to even more than 20x20? The GUI is limited to 20x20 maximum, but
> maybe by editing some XML setttings files?
>
I think that by editing the files you could have it as big as you want,
just be mindful of how much memory that will use (at 20x20 the drawing
surface is 100MB, by 8 threads, 800MB just of drawing surfaces, then we
have to keep the rest of GeoServer in the game).
I believe you can modify your metatile factor in the right file inside
gwc-layers (there is one per layer) and then... I guess either issue a
reload, or restart GeoServer.
>
>
> Unfortunately, splitting the polygons from the shapefile to a grid does
> not really work with Quantum GIS. I tried the whole day, but splitting up
> the outlines according to a grid does not work… (with polygons it’s ok).
>
>
>
> I assume that having the shapefile by default in EPSG:900913 instead of
> EPSG:3044 would help too, right? Then in each rendering step at least the
> reprojection does not need to be done. Do you think that this would have a
> bigger effect or will it be negligible?
>
Hum...good question... we certainly generalize before reprojecting, but we
don't clip before reprojecting so... that _might_ have some effect, but
I would not expect it to be big
Cheers
Andrea
--
==
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