Another attempt at speeding up yaouh, with persistent connections

Robin Paulson robin.paulson at
Thu Mar 5 09:26:31 CET 2009

2009/3/3 Helge Hafting <helge.hafting at>:
> The tiles have 5-digit names, so the max would be 100000 ?

i think it only uses as many digits as necessary - i.e. there are
never any triling zeroes. if you look at antarctica, there are numbers
up to 130,000 for zoom 17. if tango ever supports zoom 18, then
there's potential for 260,000 per directory. is it likely, that anyone
will have more than 250 per directory? i dunno, but i recall a certain
prophecy that 640kb of ram...something, something

> Anyway, that could be a problem. With hundred thousand tiles and about
> 60 byte per URL, pythm would send a 7.5MB parameter list to a invocation
> of curl. That can easily be trimmed down to 950kB by only sending file
> names. Still, it'd be interesting to know if the freerunner can handle
> that at all. A pc usually can.
> A loop can be used to limit this to something sane, like 1000 files or
> so. But do anyone actually have that many files? I just checked my
> 50.000 tiles, and found no more than 250 tiles in any directory. Perhaps
> a large square area at zoom 17?

More information about the community mailing list