On Sat, Jul 2, 2011 at 3:58 PM, <[email protected]> wrote: > However, the .o5m file format is usually chosen because of its speed, and > this advantage would > get lost if you compressed the data.
With all due respect, my testing has found that the compressed .o5m file (compressed with xz, which is lzma just like 7z) is faster than the uncompressed file - at least for my server, which is I/O bound when processing the uncompressed .o5m file. > Therefore you may expect input files to be uncompressed (an uncompressed .o5m > file has nearly > the same size as a conventional .osm.bz2 file). xz -1 gives reasonable compression. xz -9 gives even better compression, but compression (not uncompression) is kind of slow. _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
