In a well documented test, I found that gdal_translate processing of a 675 MB image with --config GDAL_CACHEMAX 40 took 10,473 seconds, while processing with --config GDAL_CACHEMAX 45 was 63 times faster!, taking only 166 seconds. However, further increases in the GDAL_CACHEMAX did not effect processing times. A table and a graph of the results of my test are available at http://homepage.mac.com/gregcoats/jp2.html#GDAL_CACHEMAX Greg
On Aug 25, 2010, at 10:24 AM, turtlewax wrote: > 2. Would setting environment variables such as GDAL_CACHEMAX help?
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