Re: HyperThreading

[Joe Talbott <josepht@xxxxxxxxxx>]

On Thu, Feb 17, 2011 at 12:41:55PM -0500, Saman Barghi wrote:
> Hi,
> I wanted to know if DragonFlyBSD supports Hyper threading or not. I did some
> benchmarking recently and it seems that on a Xeon dual core with 2 virtual
> cpu per core, DFBSD only scale to 2 threads and after that the number of
> transactions/second dorps (using sysbench oltp). So does that mean DFBSD
> does not support Hyperthreading !? If that is the case, I need to perform
> the benchmarks on a different machine without hyper threading. Please kindly
> advise.

HyperThreading is certainly supported.  Do you have an SMP kernel
installed?  Perhaps your dmesg output would be helpful.

Thanks,
Joe