[mapguide-users] MGOS2.0.1 & Raster Files Performanc

[Rahul]

Hi,
       I think using external Image Web Server is another idea (Example ER Mapper Image Web Server -But Expensive ) and can use layers as OGC WMS ,another option is use the ECWP protocol for  providing realtime roam and zoom functionality on image updates.  
Many applications natively support ER Mapper’s streaming imagery protocol.But till now its now supported in MapGuide and if someone can think on those aspects then it can solve integrating High Performance Image Web Server with MapGuide,so in this case the Raster Data will reside on Image web server while vector data on the Mapguide Server.

Max !!


----- Original Message ----
From: Frank Warmerdam <warmerdam at pobox.com>
To: MapGuide Users Mail List <mapguide-users at lists.osgeo.org>
Sent: Thursday, June 5, 2008 11:58:30 PM
Subject: Re: [mapguide-users] MGOS2.0.1 & Raster Files Performanc

G.E.O.-Consulting / Hans Mörschell wrote:
> Hi,
> 
> We experience the same problems using MGOS2.0.1 with IIS on MS Server 2003
> and MS Server 2008 and an ASP application (FDO Provider). We use Tiff and
> MrSID files of different sizes and resolutions but the errors are always the
> same as described (cannot stylize layer, out of memory, no more connections
> and so on).
> 
> We now have some kind of "monitor" application and restart the mgserver
> process if necessary, but this is not a really good solution because
> throwing the error "no more connections..." the mgserver process does not
> crash rather "refuses" to render the images.
> 
> Furthermore restarting mgserver resulting in loss of session data is really
> annoying so we are looking now for some workaround, does anybody have any
> idea what can be done ?
> 
> Possible ideas might be:
> 
>  - using an external image server, is there any ?
>  - recovering sessions, is there any possibility ?
>  - ???

Folks,

I think the best might be to lock me, a mapguide developer with good
debugging skills, and perhaps someone who can demonstrate the problem in
a room for a day or two.  I don't have the mapguide skills to debug this
in the mapguide context, and things seem to work fine with the FDO
unit tests.  If there is a mapguide developer in the Ottawa/Montreal/Toronto
region that could spare a day or two for this work I would be willing to visit.

I have stopped reviewing the various raster related emails on this list very
closely since a lot of problems seem to be related to deploying the mrsid
plugin or related to missing/extra slashes in paths.  But if folks are
having the discussed problems with tiff files then the problem is pretty core.

Best regards,
-- 
---------------------------------------+--------------------------------------
I set the clouds in motion - turn up  | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | President OSGeo, http://osgeo.org

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