Hi > method. This ensures that the String "highway" exists only once when > stored as tag. Additionally the values of the most common tags with a > limited number of different values are also interned. (It makes sense to > intern the value of a highway tag but it does not make sense to intern > the value of a name tag because the share rate of the name tag values is > too low). > > This all might sound embarrasing but the String objects that are > returned from the XML reader are not interned. You can test this easily > by exchanging the put method in class tag:
> I have seen memory reductions of > 10%. This is all very true. In fact the patch on the style-speed branch sneakily does an equivalent thing to itern'ing the key values, which does indeed save a lot of memory. So we do not need to add intern() inside Tags.put The intern on the values has less effect but might be still worth doing. ..Steve _______________________________________________ mkgmap-dev mailing list [email protected] http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
