[Chameleon] raster hang

[Ken-ichi]

I should also mention that this problem is probably TIFF specific.  It 
does not occur when I use an Erdas Imagine (.img) format image of the 
same area, which is also about the same file size.

-Ken-ichi

Ken-ichi wrote:

> 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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>
>