[mapserver-users] Re: VRT memory usage (from C# Mapscript)

[Frank Warmerdam]

Lisa Gaudette wrote:
> 
> Frank Warmerdam wrote:
>> Lisa,
>>
>> In recent versions of MapServer an effort is made to keep GDAL files open
>> between render requests for raster layers with a single file as opposed
>> to a tile index.  I wonder if you might be running into a problem with
>> this behavior in a long running mapscript script.  I don't understand
>> the whole context in which you are operating so I could be off base.  But
>> you might consider adding:
>>
>>    PROCESSING "CLOSE_CONNECTION=NORMAL"
>>
>> to your raster layer to force the files to be closed at the end of a
>> render.
>>
> 
> That seems to fix it. Is there any way to set that option globally when
> compiling?

You could change this code in mapraster.c:

     if( close_connection == NULL && layer->tileindex == NULL )
         close_connection = "DEFER";

To assign a default of "NORMAL" instead.

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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