[Tilecache] Pregenerated tiles

Alexandre Dube adube at mapgears.com
Wed Nov 5 14:07:53 EST 2008


Hi Guillaume,

  I get the following after around 30 seconds of running :
...
...
Cache miss: 196426.56206,5380743.03968,196878.117371,5381194.59499, 
Tile: x: 15, y: 15, z: 4, time: 1.48284912109
04 (000015, 000015) = (196426.5621 5380743.0397 196878.1174 
5381194.5950) [1.4831s : 4.280/s] 61/247
Traceback (most recent call last):
  File "./tilecache_seed.py", line 9, in <module>
    TileCache.Client.main()
  File "/home/mapgears/tilecache/TileCache/Client.py", line 108, in main
    seed(svc, base, layer, map(int, sys.argv[3:5]), map(float, 
sys.argv[5].split(",")))
  File "/home/mapgears/tilecache/TileCache/Client.py", line 92, in seed
    svc.renderTile(tile)
  File "/home/mapgears/tilecache/TileCache/Service.py", line 138, in 
renderTile
    data = layer.render(tile)
  File "/home/mapgears/tilecache/TileCache/Layer.py", line 429, in render
    image = self.renderMetaTile(metatile, tile)
  File "/home/mapgears/tilecache/TileCache/Layer.py", line 391, in 
renderMetaTile
    data = self.renderTile(metatile)
  File "/home/mapgears/tilecache/TileCache/Layers/MapServer.py", line 
51, in renderTile
    mapImage = wms.draw()
  File "/home/mapgears/fgs-5.2.0/www/lib/python2.5/mapscript.py", line 
1363, in draw
    def draw(*args): return _mapscript.mapObj_draw(*args)
_mapscript.MapServerError: msDrawMap(): Image handling error. Failed to 
draw layer named 'mos'.
msDrawRasterLayerGDAL(): Memory allocation error. Allocating work image 
of size 1300x1300 failed.

  Do you know what can cause this ?  I use metaTile=true with default 
settings.

  Thanks a lot for your help,

Alexandre

Guillaume Sueur wrote:
> cache miss is the normal message for non-existing tiles.
>
>
> Alexandre Dube a écrit :
>   
>> I see,
>>
>>  I've got a lot of "cache miss" message and finally a  "Memory
>> allocation error".  I'll try to find out why.
>>
>> Thanks for the tip,
>>
>> Alexandre
>>
>> Guillaume Sueur wrote:
>>     
>>> that's what tilecache_seed.py does.
>>>
>>> See http://tilecache.org/readme.html#seeding-your-tilecache
>>>
>>> Guillaume
>>>
>>> Alexandre Dube a écrit :
>>>  
>>>       
>>>> Hi Guillaume,
>>>>
>>>> I don't know what tileseed.py is.  What I would like to do is generate
>>>> all tiles for all resolutions of my raster layer in tilecache.  Is there
>>>> a way to do this ?
>>>>
>>>> Many thanks,
>>>>
>>>> Alexandre
>>>>
>>>> Guillaume Sueur wrote:
>>>>    
>>>>         
>>>>> you mean the tileseed.py stuff ?
>>>>>
>>>>> Alexandre Dube a écrit :
>>>>>  
>>>>>      
>>>>>           
>>>>>> Hi list,
>>>>>>
>>>>>>   Is there a way, using command line, to pre-generate all tiles of a
>>>>>> layer in tilecache.cfg file ( with its resolutions and extent ) ?
>>>>>>
>>>>>>             
>>>>>>             
>>>>>         
>>>>>           
>>>>     
>>>>         
>>     
>
>
>   


-- 
Alexandre Dubé
Mapgears
www.mapgears.com




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