[LLVMdev] Use perf tool for more accurate time measuring on Linux

[Tobias Grosser]

On 21/05/2014 22:13, Yi Kong wrote:
> On 20 May 2014 17:55, Tobias Grosser <tobias at grosser.es> wrote:
>> I set it to 2667.000 Mhz on parkas16. You can try if this improves
>> something.
>
> I don't see any sign of improvement.
>
> Since we can't get raw data any better, I think we should get this
> merged and tested on build bots for a while and see how it goes.

My builders are prepared for this (and I can fix upcoming issues in case 
I forgot something). Chris, Hal, Renato? What do you think?

Tobias