On Tue, Oct 19, 2010 at 10:12 PM, Jan Kovanda <kovandajan11...@gmail.com> wrote: > A testing picture is 8.5 MB RGB jpeg image 6000px x 6000px.
uncompressed this is 103 MB as 8bit RGB data, 549 MB as 32bit float RGBA data which is what GEGL prefers to work with internally. > Why GEGL needs so much resources for such simple program? > I am not so familiar with inner workings of buffers and caching, but I would > expect smaller use of the resources. At least the load and save ops themselves need a buffer the full size of the image to be able to do all the png processing in one go, there is potentially also caches for some of the other operations in a graph. > Why those swap files are created? > In the program I didn't set any properties for swapping to disk. GEGL defaults to swapping to disk, see the various environment variables in http://gegl.org/#_environment for how to tweak this, these settings are also available in the singleton object returned with gegl_config() You would probably want to increase the tile cache size which defaults to 256mb by setting GEGL_CACHE_SIZE Disable swapping to disk by setting GEGL_SWAP=RAM in the environment, this will cause GEGL to "swap" unused tiles to RAM instead. /Øyvind K. -- _______________________________________________ Gegl-developer mailing list Gegl-developer@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gegl-developer
