The hyperthreading processor appears to the system as two processors. In
order for your application to take advantage of multiple processors your OS
and VM need to support it. I know at least Sun's VM on windows does. In
addition to that, you application needs to have multiple threads running,
doing useful work. Otherwise, you'll never see more than 50% of the combined
CPU load being utilized.
"BlackHawke" <blackhawke@legacygames.net> wrote in message
news:bfruo4$k2s$1@slb4.atl.mindspring.net...[color=blue]
> Hello!
>
> I have a java application (a game) which is supposed to run as a server.[/color]
It[color=blue]
> is on a dedicated machine with MP capabilities, but currently running 1[/color]
Xeon[color=blue]
> processor with hyperthreading.
>
> The hyperthreading is causing the process to receive no more than 50% of[/color]
the[color=blue]
> CPU cycles. I've been told that the app needs to be changed to be SMP[/color]
aware[color=blue]
> in order to use all hyperthreading.
>
> A few people have suggested turning hyperhtreading off in the BIOS, but[/color]
that[color=blue]
> has a noticeable performance decrees and actually didn't help the java
> program CPU cycles much. Any thoughts?
>
> Thanks!
>
> B-
>
www.andromedaonline.net
>
>[/color]
