[OSM-dev] osm2pgsql, .o5m import interface

[Anthony]

On Sat, Jul 2, 2011 at 7:32 PM, Anthony <osm at inbox.org> wrote:
> On Sat, Jul 2, 2011 at 3:58 PM,  <marqqs at gmx.eu> 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.

By the way, I use xz as opposed to 7z simply because it has a simpler
command line, and supports piping from stdin to stdout at the same
time (http://stackoverflow.com/questions/1287383/not-able-to-use-7-zip-to-compress-stdin-and-output-with-stdout).