Richard Jones schrieb:
> On Thu, Sep 24, 2009 at 02:47:17AM +0100, Jon Harrop wrote:
>> Wow! 2.6x faster on 2 cores is good. ;-)
> 
> Isn't that impossible?  Or is the multicore GC better than the single
> threaded one?  (Sorry if this is a stupid or obvious question)

It might just happen that the size of the working set and memory
access pattern of the application is just right so that you get a
better interleaving of cache misses and thread execution if you
run more than two threads on two cores. Hyperthreading might muddle
things further.

- Florian