[mkgmap-dev] [PATCH v10] make maps in parallel

Wed May 20 12:44:44 BST 2009

Hi Clinton,

> I can also confirm that the patch appears to work correctly on Mac OS
> X. I tested with this patch and with the "quick distance calculation
> v1" patch also applied.
> 
> On a 2 GB, 2 GHz Intel Core 2 duo machine, a combined map of France,
> Germany, Switzerland, and Italy took about 45 minutes to compile.
> Without these patches, it took about 1 hour and 40 minutes.

Good, that's a x2 speedup.

> Sorry, I didn't test the patches separately, so I don't have data on
> the individual performance improvements.

Don't worry about that, I am more concerned with correctness
at this time.

> At any rate, with superficial testing, both patches seem to be stable. Thanks!

That's good. If you're happy to keep using the patches, please do and
that will give you a chance to spot any problems.

Cheers,

Mark