[OSM-dev] OSM Date Formats

[Jon Burgess]

On Sun, 2007-09-30 at 15:01 +1000, Brett Henderson wrote:

> I'll fix osmosis to remove the millisecond information.  Are you willing 
> to update planet.c and planetdiff?  I can brush off my C skillz but it 
> will probably take me a while :-)
> 

I've updated the planet.c code to generate dates in the format:

    2007-07-10T11:32:32Z

Loading a small planet dump in old vs new date format using Osmosis
produces the following timings:

OLD:
  real    12m44.875s
  user    2m4.975s
  sys     0m23.508s

NEW:
  real    10m47.347s 
  user    0m43.055s
  sys     0m2.443s


A >50% drop in CPU utilisation by Osmosis, even more if you include the
drop in system time as well. It is a shame that MySQL takes so long.

	Jon