Hi Alexandre,

the Web server I'am mentioning is the MapServer Web Server.

I can observe the mapserv process running by more than 5 minutes (of CPU time at 100%).

So, that doesn't seem to be the problem.

Thanks any way.

Meantime, I isolate the problem even more, I find that the "similiar" request direct to MapServer worked, the difference is that TileCache is configured do add a extent of 20px to eliminate miss match tile junctions.

However, the same request with that extra size direct to MapServer also run forever...

Here is the URLs:
   - Faling one with extent:
   http://127.0.0.1:8881/cgi-bin/mapserv.exe?map=mapfile.map
       &transparent=true
       &layers=mylayer
       &styles=
       &service=WMS
       &width=552
       &format=image%2Fpng
       &request=GetMap
       &height=552
       &srs=epsg%3A900913
       &version=1.1.1
&bbox=-916644.789907%2C5099560.83129%2C-916315.155222%2C5099890.46597

   - Successful without extent:
   http://127.0.0.1:8881/cgi-bin/mapserv.exe?map=mapfile.map
       &transparent=false
       &layers=mylayer
       &styles=
       &service=WMS
       &width=512
       &format=image%2Fpng
       &request=GetMap
       &height=512
       &srs=epsg%3A900913
       &version=1.1.1
&bbox=-916632.846621%2C5099572.77457%2C-916327.098508%2C5099878.52268


Any more ideas?


Nelson Branco



Alexandre Dube wrote:
Hi,

That looks like a TileCache problem. Try the TileCache mailing list.

Do you use a MapServerLayer in your tilecache.cfg ? If so, use WMSLayer instead.

Alexandre

Nelson Branco wrote:
I have a problem generating a few images, tiles with TileCache, that run “forever” until Web server timed out (after more than 5 minutes).

The tiles failing are a rare occurrence, 1 in a half million or so, and all in zoom level with a resolution of 0.29858214168548585 in epsg:900913 projection (very close zoom, the roads are about 50px wide).

Any idea to solve the problem or to help identifying it?

Thanks.

Nelson Branco

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