[mkgmap-dev] Java tuning hint

Thu May 8 17:28:22 BST 2014

Am Donnerstag, 8. Mai 2014, 17:33:22 schrieb Gerd Petermann:

Hello Gerd

I've made three tests with my bonn extract

without -XX:StringTableSize
Time started: Thu May 08 17:57:43 CEST 2014
Time finished: Thu May 08 18:04:54 CEST 2014
Total time taken: 430804ms

with -XX:StringTableSize=100003
Time started: Thu May 08 18:07:33 CEST 2014
Time finished: Thu May 08 18:14:20 CEST 2014
Total time taken: 406425ms

with -XX:StringTableSize=1000003
time started: Thu May 08 18:16:20 CEST 2014
Time finished: Thu May 08 18:23:06 CEST 2014
Total time taken: 405556ms

This are tests on my small laptop with 3.6 GB RAM with 64bit Linux

Bernd

> I tried both, and the smaller values seemed to work better for mkgmap.
> I guess it depends on the input files what value is best, but at least 
> the default 1009 doesn't work well, so any much higher prime value should
> help.