[OSM-dev] Osmosis: 20% performance increase with java -server

Noel Grandin noel at peralex.com
Wed Dec 5 09:20:29 GMT 2007


The -server flag changes the internal VM parameters so that it
- favours execution speed over startup time, so the JIT runs more
aggressively
- favours execution speed over memory use, so it will probably use a
little more RAM

Frederik Ramm wrote:
> Hi,
>
>     I  was able to run Osmosis tasks between 10% and 20% faster by  
> adding the JVM flag "-server" to the osmosis startup script (that's  
> on a Sun Java6 implementation). I don't really know what it does but  
> it seems to be a good thing. I also tried the IcedTea JVM but that  
> was (marginally) slower than the Sun Java6 one.
>
> Bye
> Frederik
>
>   


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