Linux benchmark tools

[Vu Pham]

On Thu, 2006-09-14 at 08:46 -0500, Vu Pham wrote:
> I build a new Suse workstation using Cpu Intel X6700 which is supposed
> to run at 2.66Mhz. /proc/cpuinfo shows it runs only at 1.6Ghz.
> 
> A Google search told me that this cpu has SpeedStep technology that will
> automatically switch the cpu to 1.6Ghz when it is in idle mode and will
> turn it back to 2.66Ghz when load increases. That's good to save power,
> but when working on this PC, I think it is slower noticeably than my
> current workstation. 
> 
> Is there any way to disable Speedstep so that I can check how it works
> in full speed ?
> 
> What benchmark tools available for Linux ?


I am running two c programs which just do infinite loops of calculating
some double numbers. top shows two core cpus are very busy up to 100%,
and /proc/cpuinfo still shows 1.6Ghz.

I wonder if /proc/cpuinfo is periodically updated or just updated when
the system starts ?

Vu