I just chipped in $100, thanks for organizing this Trevor if everyone who would like to have reliable GDAL did this, we can reach the target pretty easily. hint :)
z 2010/1/1 Trevor Wekel <[email protected]>: > Hello MapGuide Users, > > Based on various posting to mapguide-users, it looks as though we still have > stability and performance issues with MapGuide Open Source 2.1 and the GDAL > Provider. After some discussion with the PSC and other community members on > the mapguide-internals list, I have decided to take on MapGuide/GDAL > stability and performance as an initiative. > > Based on my previous experience with raster in MapGuide 6.5 and MapGuide > Enterprise, and some previous discussions on the mapguide-internals list, > this project has the potential to be a fairly long endeavour. A stable and > scalable MapGuide/GDAL solution will likely take man weeks of effort. > > I plan to use a phased approach for this initiative. The first phase will be > test environment setup and initial analysis into the reported instability > with MapGuide/GDAL. This will provide the community with more detailed > information on the root cause(s). Using this information, the development > community can determine the next steps towards achieving a stable and > scalable MapGuide/GDAL solution. > > The Project Steering Committee does not currently have funding to support > this initiative. As a result, I am formally requesting funding directly from > the community. If you are interested in supporting this initiative, please > donate via my initiatives page at > http://www.otxsystems.com/community-initiatives.html > > Thank you for your support, > Trevor Wekel > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Andy Morsell > Sent: December 27, 2009 10:29 PM > To: 'MapGuide Users Mail List' > Subject: RE: [mapguide-users] [MGOS 2.1]few map with Ecw, need restart > mapguide service > > Trevor, > What would it require, in terms of funding, to have you spend enough time > examining the provider and problems to come up with an approach and labor > estimate to improve it? Maybe we can collectively raise enough money from > contributors to fund the functional specifications determination and then > see if we can fund the full project after. > > Thanks, > > Andy Morsell, P.E. > Spatial Integrators, Inc. > 47° 46' N 116° 49' W > www.SpatialGIS.com > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Trevor Wekel > Sent: Sunday, December 27, 2009 9:15 PM > To: MapGuide Users Mail List > Subject: RE: [mapguide-users] [MGOS 2.1]few map with Ecw, need restart > mapguide service > > > Just as a point of reference, I have been involved with MapGuide and raster > since the MapGuide 6.x days. Stable multi-threaded performance is difficult > to achieve due to the sheer number of third party libraries involved. From > what I recall, Autodesk spent at least two developer months in the last > release getting the Autodesk Raster Provider to the stable and relatively > scalable state it is in currently. > > This is not an easy task. Each file format has to tested, analysed, and > fixed separately because the underlying "codec" libraries are all different > and come from different vendors. In other words, stability with TIFF data > does not guarantee stability with ECW or MrSID. In some cases, the vendor > libraries may not be 100% thread safe. MapGuide is a heavily multi-threaded > application. If there is a thread safety problem, it is almost guaranteed > that MapGuide will trip over it at some point. > > This makes testing and validation especially painful. I would consider a 24 > hour load test on a 4 core machine to be a bare minimum test run for > stability. 8+ cores would be preferable. > > I personally like working on raster integration in MapGuide. However, I > also have enough background to know that it can be a bit of a black hole as > far as development resources go. Hopefully we as a community can raise > enough funds through Project Sponsorship to pay a developer to bury his head > in the raster provider for a couple of months. > > Thanks, > Trevor > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Jason Birch > Sent: December 27, 2009 6:47 PM > To: MapGuide Users Mail List > Subject: Re: [mapguide-users] [MGOS 2.1]few map with Ecw, need restart > mapguide service > > It has been pretty decent for me with tiled, overviewed GeoTiffs and > connection cache disabled... > > Folks, this is a known problem, but unless someone steps up to fix it, > it is unlikely to get resolved. ADSK has a proprietary raster > provider, so don't have a vested interest in diagnosing and fixing > this problem. > > As I see it, there are two options: wait and hope someone steps in and > fixes it, or pay someone with the experience and ability (Trevor, > Haris, maybe Frank, Kenneth, UV, maybe others) to do it. > > Raster in MGOS has been a pain point for at least two releases, so I > wouldn't hold my breath on the first option... > > Jason > > On 2009-12-27, isca <[email protected]> wrote: >> >> It seems the GDAL provider still acts very unstable under MGOS 2.1. There >> has >> been logged a ticket for this. Refer to #1196 MapGuide unresponsive using >> GDAL provider. >> >> >> lunab54 wrote: >>> >>> I make another experience >>> >>> i get an old unused windows 2003 server and i installed MapGuide 2.1 with >>> ecw support >>> >>> miracle ! mapguide with gdal ecw layer run well like service (not debug >>> mode) >>> >>> so i copied the c:\program Files\osgeo\mapguide on the new 2003 server >>> that not run with ecw layer >>> >>> and it's always the same thing : Gdal turn around and the mapguide log >>> said : >>> >>> <2009-12-21T17:46:58> 4160 Ajax Viewer 127.0.0.1 > Administrator >>> Error: Failed to stylize layer: LAYER_ECW_DEBUG >>> Cannot create any more connections to the OSGeo.Gdal FDO > provider. >>> StackTrace: >>> - MgMappingUtil.StylizeLayers() line 776 file >>> c:\osgeo\mapguide_21\mgdev\server\src\services\mapping\MappingUtil.cpp > >>> >>> so now i think there is missing something on this system but what ? >>> >>> help... >>> >>> >> >> -- >> View this message in context: >> > http://n2.nabble.com/MGOS-2-1-few-map-with-Ecw-need-restart-mapguide-service > -tp4177077p4221048.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 >> > _______________________________________________ > mapguide-users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/mapguide-users > > > > _______________________________________________ > mapguide-users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/mapguide-users > > > _______________________________________________ > mapguide-users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/mapguide-users > -- Zac Spitzer Solution Architect / Director Ennoble Consultancy Australia http://www.ennoble.com.au http://zacster.blogspot.com +61 405 847 168 _______________________________________________ mapguide-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapguide-users
