4 Apr
2009
4 Apr
'09
11:09 a.m.
1. Performance Tile Splitter. Split austria.osm with already established areas.list (4 areas) takes 120sec, the same but austria.osm.bz2 took astonishing 312 seconds. The tile splitter works significantly faster on unzipped sources.
I haven't stopped by stopwatch, but on my system by feeling it is roughly the same time at b2zipped and unzipped files. I don't know any significant slowdown on my system. But it is fact, that the bzip2 algorithm needs a lot of cpu resources, you can't change it. Do you save time, if you unzip the bz2 data before running splitter and add that needed time to the splitter running time?