[Chameleon] raster hang

[Ken-ichi]

Thanks for responding, Paul.  I've actually set my php.ini file to be 
very lenient on resource use for other purposes, so I doubt it's that:

max_execution_time = 60
max_input_time = 120
memory_limit = 510M

I did a little more testing and found that this also happens with 
non-Chameleon phpMapScript (the MapLab non-ROSA preview app), and with 
other GeoTIFFs, but not with the mapserv CGI or the ROSA applet.  So I'm 
guessing you were right to suspect the PHP side of things.  Any more 
ideas, or should I take this to a more MapScript specific list?

-Ken-ichi

Ken-ichi wrote:

> Hi folks.  I've started trying to add a GeoTIFF to my Chameleon app, 
> and it really bogs it down, sometimes to a stand still.  The image I'm 
> experimenting with is a 29mb unsigned 8bit GeoTIFF created in Erdas.  
> The hangs are most frequent when the tiff occupies the whole map, and 
> when I say hang, I mean that the map just doesn't render.  The hangs 
> also seem to generate an httpd process that takes up a lot (>20%) of 
> my CPU activity.  The relevant portion of my map file is pretty simple:
>
> LAYER
>    NAME "Test Raster"
>    TYPE RASTER
>    DATA "/path/to/data.tif"
>    STATUS DEFAULT
> END
>
> I haven't specified an outputformat, except in the MAP section, where 
> I've set it to PNG (but I've switched around and that doesn't seem to 
> make much difference).  This problem does not seem to occur outside of 
> Chameleon (everything works fine in MapLab's ROSA applet), and it 
> doesn't happen every time the map is loaded  (although it inevitably 
> happens if you refresh the map enough).
>
> Has anyone experienced this kind of behavior before?  Even better, 
> anyone have any recommendations?
>
> -Ken-ichi
>
>
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