Re: [gdal-dev] tileindex performance

2010-10-14 Thread christian . mueller
Hi guys, I am the developer of the gdal_retile. Using gdal_retile on very large images only makes sense if you plan to import your tiles into a jdbc database. Serving images from so many files is not recommended. I tested on an AIX Box, tiling an 80 GB Erdas image. The performance decreas

Re: [gdal-dev] tileindex performance

2010-10-14 Thread Elijah Robison
Hi Nikos, I also have difficulty tiling large, high res images with gdal_retile. I would say our average process--a county-wide, 1-foot resolution ECW--takes about a month to run to completion. At first, tiles are generated with blazing speed. But by the time the routine has been running f

Re: [gdal-dev] tileindex performance

2010-10-14 Thread Frank Warmerdam
nickos85 wrote: Hi, I have a mapserver and a high resolution image about 4GB when i make the image tiles with a size of 512x512 using gdal_retile I have better result instead of a tile size of 256x256. I think the problem is on how the search algorithm for the location of the tile can be improov

[gdal-dev] tileindex performance

2010-10-14 Thread nickos85
Hi, I have a mapserver and a high resolution image about 4GB when i make the image tiles with a size of 512x512 using gdal_retile I have better result instead of a tile size of 256x256. I think the problem is on how the search algorithm for the location of the tile can be improoved. Any suggestio