id summary reporter owner description type status priority milestone component version severity resolution keywords cc 2838 GTiffRasterBand::IReadBlock() is terrible slow for big number of bands and pixel interleaving Even Rouault Even Rouault This is due to the active preloading of other bands in case of pixel interleaving that is not protected against re-entrance. The consequence is that the depth of calls is proportionnal to the number of bands, and the global time quadratic in the number of bands ! defect closed normal 1.6.1 default unspecified normal fixed warmerdam