mg 2.0 currently has similar problems with rasters there are some related trac tickets
http://trac.osgeo.org/mapguide/ticket/462 http://trac.osgeo.org/mapguide/ticket/451 http://trac.osgeo.org/mapguide/ticket/533 On Tue, Apr 22, 2008 at 5:34 PM, Pascal Coulon <[EMAIL PROTECTED]> wrote: > > Dear All, > > I have run a series of stress test on raster layers, using a URL of the > following sort: > > http://10.XXX.XX.71/mapguide/mapagent/mapagent.fcgi?OPERATION=GETMAPIMAGE&VERSION=1.0.0&MAPNAME=Browser_Default&LOCALE=EN&MAPDEFINITION=Library://PILOT_TEST/Maps/MainMap.MapDefinition&FORMAT=PNG&SETVIEWCENTERX=190722&SETVIEWCENTERY=205644&SETVIEWSCALE=8600&SETDISPLAYDPI=78&SETDISPLAYWIDTH=600&SETDISPLAYHEIGHT=600&USERNAME=Administrator&PASSWORD=XXXX. > The idea was to test the actual MapGuide server rather than any application > using the underlying map server. I have gradually increased the number of > concurent users on various raster layers. I got some excellent results on > most of the raster layers. However, on one specific rather layer (UK > Ordnance Survey Aerial Images - 8.6GB), the system started to crash with > only two concurent users. http://www.nabble.com/file/p16823109/Error.log > Error.log On inpestecting the error log (see attached file), I noticed the > following error being logged: > > Error: Failed to stylize layer: OS_AerialPhotography_SN > Cannot create any more connections to the OSGeo.Gdal FDO provider. > > I had created a raster catalogue > (http://trac.osgeo.org/fdo/wiki/FdoGdalNotes); which had help on the smaller > rater dataset. But for this larger dataset, I did not get any benefit. > > I understand that the GDLA library is single threaded. This means that if > too many requests are queue in the stak, it might eventually time out and > then through the above error. However, this error seemed to be logged before > any set time out. > > For completness, here is the following plateform specifications: > > OS: Windows 2003 Server SP2 > CPU: 2.20 GH > RAM: 3.62GB > MGOS 1.2 > > Would an upgrade to MGOS 2.0 provides any benefits? > Can anyobody suggest a way for handling very large raster dataset? > > Any help would be much apprecaited. > > Pascal > > > -- > View this message in context: > http://www.nabble.com/GDAL----Failed-to-stylize-layer...-Cannot-create-any-more-connections-to-the-OSGeo.Gdal-FDO-provider-tp16823109s16610p16823109.html > Sent from the MapGuide Users mailing list archive at Nabble.com. > > _______________________________________________ > mapguide-users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/mapguide-users > -- Zac Spitzer - http://zacster.blogspot.com (My Blog) +61 405 847 168 _______________________________________________ mapguide-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapguide-users
