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

[Tobias Grosser]

On 26/05/2014 01:07, Yi Kong wrote:
> I've been running Hal Finkel's benchmarking mode patch along with perf
> tool patch, and posted the results on http://146.169.44.158:55080/.

Interesting.

> For the results I've collected until now, by defaulting to use median
> instead of minimum, there isn't any same-run comparison false positive
> result.

I observe the same regularly for the full run. Even though the median 
may not be the theoretical best fit for all benchmarks, it seems to be 
filter most false positives.

Tobias