[mapguide-users] Grey image after some time in MGOS 2.0

[Andy Morsell]

Does your map contain one or more imagery layers?  If so, can you try your
load test with a map without the imagery?  I ran into this exact problem in
the past, only with MapGuide Enterprise 2008 and the Autodesk Raster image
provider, so I'm wondering if you might have something similar going on with
the open source raster provider.
 

Andy Morsell, P.E. 
Spatial Integrators, Inc. 
http://www.SpatialGIS.com 

  _____  

From: mapguide-users-bounces at lists.osgeo.org
[mailto:mapguide-users-bounces at lists.osgeo.org] On Behalf Of Trond A.
Tunheim
Sent: Friday, March 28, 2008 4:01 AM
To: MapGuide Users Mail List
Subject: [mapguide-users] Grey image after some time in MGOS 2.0



Hi,

 

We have experienced a problem with the MGOS 2.0 installation. After some
time with moderate load it just returns grey images until the "Mapguide
Server v2.0" service is restarted. We are using the WebApi with the
GETMAPIMAGE mapagent operation. 

 

A quick look in the Error.log file reveals some details about the problem :

 

<2008-03-27T10:54:37>
Anonymous

 Error: Failed to stylize layer: landlayer

        An exception occurred in FDO component.

        SDF connect failed. File does not exist or cannot be opened in
specified access mode. 

 StackTrace:

  - MgMappingUtil.StylizeLayers line 776 file
d:\buildforgeprojects\mapguide_open_source_v2.0\build_23.8\mgdev\server\src\
services\mapping\MappingUtil.cpp                Failed to stylize layer:
landlayer

An exception occurred in FDO component.

SDF connect failed. File does not exist or cannot be opened in specified
access mode.

 

After restarting the Mapguide server service everything works fine for a
while.

 

We are using a web loadtester to reproduce the problem. The problem occurs
with moderate load ( 2 users) continuously requesting maps for a set of
areas. After about 2 hours the mapguide server ends up in the "gray state".

 

Does anyone have any ideas about this problem ?

 

 

Br

Trond Tunheim, CellVision AS

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