[mapguide-users] ISAPI versus CGI Stability

[Andy Morsell]

Yes, I'm hoping this is only an interim work-around until the ISAPI agent is
improved.  CGI is a bit slower (due to the execution reasons you describe),
but I'll sacrifice performance to gain stability in this case.

Andy 


  _____  

From: Jason Birch [mailto:Jason.Birch at nanaimo.ca] 
Sent: Thursday, May 11, 2006 11:20 AM
To: users at mapguide.osgeo.org
Subject: RE: [mapguide-users] ISAPI versus CGI Stability


 
Makes sense.  I'm guessing that this is why the development list has shown a
lot of memory leak hunting.
 
Going to the CGI version would reduce cumulative memory leak problems, but
at the expense of forking the cgi on each request (I think that isapi
modules typically stay loaded for the life of the IIS service).
 
This is obviously not a long term fix for servers under any real load.
 
Jason

 
  _____  

From: Andy Morsell [mailto:amorsell at spatialgis.com]
Sent: Thu 2006-05-11 9:23 AM
To: users at mapguide.osgeo.org
Subject: [mapguide-users] ISAPI versus CGI Stability



I saw a mention of this on the Mapguide Enterprise beta forum and it helped
me, so I thought I would share it.  I do not recall seeing this mentioned in
this list or in Project Tracker. 

If you install MapGuide Open Source on Windows for use with IIS, you are
instructed to configure the .fcgi extension for the mapagent virtual
directory to point to the isapi_fcgi.dll file.  It looks like the ISAPI
agent is the component that is having the stability issues I have been
fighting with since I installed R1.   After pointing the .fcgi extension to
the mapagent.exe file instead, my production server seems to be much more
stable.  It has been running under this configuration without a lockup for 4
days whereas it was locking up several times a day previously.

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

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