Hi! I have discovered a situation where MapServer seems to enter an endless loop and uses all the CPU power available on a server. I have managed to track down the specific feature in our postgis database that causes MapServer to hang. A database dump containing only this feature and a working mapfile are attached.
The really strange thing is that this feature does not always fail to draw, the situation does only occur with some specific BBOX's in a WMS GetMap request. A working and a non working request are posted below. The only difference between the requests is that the bbox in the working one is extended with 1000 meters to the east. I have tested this on MapServer 5.4.2 on Linux and Windows, with the same result. I also tried it on an old MapServer 5.0.0 (windows) that still lays around, and the error was NOT present on 5.0.0, where both the requests below did work. NOT WORKING (>5.0.0) http://localhost/cgi-bin/topo2?LAYERS=topo2_WMS&FORMAT=image%2Fjpeg&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&SRS=EPSG%3A32632&BBOX=513024,6792928,599680,6879584&WIDTH=256&HEIGHT=256 WORKING: http://localhost/cgi-bin/topo2?LAYERS=topo2_WMS&FORMAT=image%2Fjpeg&SERVICE=WMS&VERSION=1.1.1&REQUEST=GetMap&STYLES=&EXCEPTIONS=application%2Fvnd.ogc.se_inimage&SRS=EPSG%3A32632&BBOX=513024,6792928,600680,6879584&WIDTH=256&HEIGHT=256 Same information are provided in ticket http://trac.osgeo.org/mapserver/ticket/3207 #3207 Mapfile: http://n2.nabble.com/file/n4037146/topo2.zip db_dump: http://n2.nabble.com/file/n4037146/n2000_arealdekkeflate.zip Regards, Pål Kristensen The Norwegian Mapping Authority ----- Regards, Pål Kristensen -- View this message in context: http://n2.nabble.com/BUG-MapServer-5-4-2-going-into-an-endless-loop-tp4037991p4037991.html Sent from the Mapserver - User mailing list archive at Nabble.com. _______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
