Another attempt at speeding up yaouh, with persistent connections

[Carlo Minucci]

Helge Hafting ha scritto:
> My last attempt at speeding up yaouh was not only clunky to use, it also
> drove the cpu load up to 12-15, which made the phone extremely sluggish
> during the update.

thanks a look for your solution
last week i have try make a parallel thread for each zoomlevel but i 
have found some problem... you solution is more simpler and faster :)

i have put this in release 0.5