Re: Discordant results between UnixBench and nBench

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On Wed, Dec 23, 2009 at 1:39 PM, Avi Kivity <avi@xxxxxxxxxx> wrote:
> On 12/23/2009 02:27 PM, Matthieu Olivier wrote:
>>
>> Ok, there is an excel file which contain some results.
>> I'm not supposed to give so many informations, but I really need to
>> understand what's the problem.
>>
>>
>
> This is strange.  Is the machine hyperthreaded?
>
> Please supply full /proc/cpuinfo.
>
> --
> error compiling committee.c: too many arguments to function
>
>

I can only see 4 cores in /proc/cpuinfo.
According the caract page, there is no hyperthreading.

-> http://ark.intel.com/Product.aspx?id=35130

I also wonder why the host can still get more CPU ressources over 4
threads? I guess the purpose of both benchmarks is to overload the
CPU, so why they can't reach the max?
I suposed that the FPU was able to handle at least 2 operations the
same time, or maybe hyperthreading was included, but I can't check the
first part, and the second isn't true.

Or maybe current x86 processors can handel very well these old
benchmarks. I can't really say :/
-- 
Matthieu
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