[Geotools-devel] [ geotools-Support Requests-476009 ] Memory Consumption

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Support Requests item #476009, was opened at 2001-10-29 06:42
You can respond by visiting: 
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Joachim Bröckl (saltag)
Assigned to: Nobody/Anonymous (nobody)
Summary: Memory Consumption

Initial Comment:
Hi,

I have a .shp-file of 4.2 megabyte. Reading it with sf 
= ShapefileReader(myURL) consumes 17.5 megabyte of 
RAM, creating a layer object with sf.getLayer() 
dissipates another 32 MBytes. Adding a couple of other 
layers from other shape-files to my map soonly raises 
a OutOfMemoryException.
Is there a way to reduce the memory consumption when 
creating layers?

Thanks
Joachim


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>Comment By: Joachim Bröckl (saltag)
Date: 2001-12-03 05:44

Message:
Logged In: YES 
user_id=362103

I downloaded the latest nightly build today and tested it 
with my huge shapefile. Unfortunately I could not see any 
significant changes in memory consumption; the java-process 
now displays 45828 KBytes instead of 46844 KBytes of 
consumed memory in the task manager (I probably should look 
for that JProbe instead?!).
Nevertheless thanks for your efforts.
Joachim

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Comment By: James Macgill (jmacgill)
Date: 2001-11-30 05:32

Message:
Logged In: YES 
user_id=9731

I have just been testing JProbe, a profiling tool which 
allows me to analyse where most of the memmory is going.

I've knocked out about 16% of typical memory usage by 
changing the devenition of GeoPoints.

This has helped quite a bit, but I can still see a lot of 
other areas that might help reduce the load further.

Could you grab the latest nightly build from
http://www.geotools.org/dload.php

and let me know if you notice any significant difference?

James

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