[Tilecache] Pregenerated tiles

[Alexandre Dube]

Hi again Guillaume,

I tried to set metaSize=3,3 and the memory error no longer occurs. But ( 
unfortunately ), instead I have this new error which comes after 
(around) a minute of running :
...
...
...
Cache miss: 203199.891735,5390225.70122,204103.002359,5391128.81185, 
Tile: x: 15, y: 18, z: 3, time: 0.890893936157
03 (000015, 000018) = (203199.8917 5390225.7012 204103.0024 
5391128.8118) [0.8912s : 1.165/s] 102/176
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 403, in 
renderMetaTile
subimage = image.crop((minx, miny, maxx, maxy))
File 
"/home/mapgears/fgs-5.2.0/lib/python2.5/site-packages/PIL/Image.py", 
line 737, in crop
self.load()
File 
"/home/mapgears/fgs-5.2.0/lib/python2.5/site-packages/PIL/ImageFile.py", 
line 207, in load
raise IOError(error + " when reading image file")
IOError: decoding error when reading image file

I asked one of my colleagues about it be he got no answer. Do you have 
any clue about this new error ?

Again, many many thanks for your great help,

Alexandre

Alexandre Dube wrote:
> Ok I'll try that, thanks a lot Guillaume.
>
> Alexandre
>
> Guillaume Sueur wrote:
>   
>> ok, then it's the amount of memory used by the operation which is too
>> high for your system. Consider decreasing the metatile size or use
>> metatile false
>>
>> Guillaume
>>
>> Alexandre Dube a écrit :
>>   
>>     
>>> Hi Guillaume,
>>>
>>>  It was already set to :
>>>   MAXSIZE 4096
>>>
>>>  Is it to ok ?
>>>
>>> Alexandre
>>>
>>> Guillaume Sueur wrote:
>>>     
>>>       
>>>> Hi Alexandre,
>>>>
>>>> I think your MAXSIZE is too short in your mapfile (main MAP section)
>>>> It should allow images up to 1300 x 1300 to be drawn.
>>>> Try to set it to 1500
>>>>
>>>> Regards,
>>>>
>>>> Guillaume
>>>>
>>>> Alexandre Dube a écrit :
>>>>  
>>>>       
>>>>         
>>>>> 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