On 01/02/2012 01:57 PM, Tim Alder wrote:
Hello,
please have in mind that we take the osm-labels-lang styles in
wikipedia only for zoom 0-6. For the more interesting zoom-levels we
take only default style for performance reasons. The only exeption is
the small hsb.wp ("Obersorbisch").
Interesting.
At least according to my local proxy logs, it loads the language tiles
in the german wikipedia at z15 as well.
I am not sure if it only displays the default style, but it is loading
the other ones, too.
It first loads tiles for "osm-no-labels" then "osm-labels-de" and
finally "default". I have seen that for all of the different coordinate
types, some of which load at z11, some at z13 and some at z15.
People from ru.wp ask me to support russian but I did affraid that it
will be too much load for us. But now is russian map so popular that
it is perhaps usefull, we should use pre-rendering for it.
Is the load really that much? The maps displayed in wikipedia are fairly
small and (spatially) localized around where the articles are. So that
is probably only a small subset of tiles that would be needed for a
general purpose slippy map.
Perhaps it would be good to analyze the apache logs and check the
referrers and user-agent to see how much traffic really comes from which
wikipedia, and how much comes from other sites like hikebikemap.de or
from e.g. smartphone apps using the toolserver as a source for tiles.
Kai
|Kay: Please excuse my ignorance, but what is "default"? Is it the same as
|"osm"?
Yes.
Greetings Kolossos
Zitat von Kai Krueger <kakrueger(a)gmail.com>om>:
Hello everyone,
Over the past month, the server has been busy trying to re-render all of
the tiles to try to ensure more up-to date maps. This process is more or
less complete now and all of the map tiles should then be at least from
the 1st of December 2011.
As one month old tiles is still not overly satisfying, I am now trying
to re-activate diff based tile expiry again.
The full expiry of all styles remains infeasible for the moment and so I
am trying to introduce expiry slowly to see how far it can be pushed.
As a start, I have activated tile expiry only for the highest zoom
levels (z15 - z18) and then only for the styles that currently are
embedded in one of the wikipedias.
As far as I can tell these are the following styles:
osm-no-labels osm-labels-de osm-labels-ca osm-labels-bg osm-labels-da
osm-labels-el osm-labels-es osm-labels-fa osm-labels-fr osm-labels-it
osm-labels-lv osm-labels-nl osm-labels-no osm-labels-pl osm-labels-ru
germany default hikebike
If anyone knows of a language that I have forgotten, please let me know
and I will include it as well.
So far, it looks like the server can cope with this, although I have
only activated it earlier today. Should it remain this way, I will try
and expand the zoom levels.
As it is critical to reduce the number of low zoom tiles rendered, as
those still kill performance, lower zoom tiles will probably not be
expired as frequently. E.g. perhaps Z14 - Z11 on a daily basis, below
that even only in the background.
We will have to see, though, how performance behaves over time.
Happy new year,
Kai
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