Regarding perf mem record on Intel platforms, I think that the sampling
randomization is ensured by the hardware.
----
Manu
On 09/09/2015 05:11 PM, Milian Wolff wrote:
Hey all,
does perf randomize its sampling intervals/period to prevent pattern effects?
I found https://lkml.org/lkml/2010/3/4/51 but neither the man page on perf
record says anything on that matter, nor does the perf wiki say it's
supported:
https://perf.wiki.kernel.org/index.php/Tutorial#Period_and_rate
There is currently no support for sampling period randomization.
So is it supported, or not? If it is supported, how do I enable it? Or is this
enabled by default?
If it is not supported, why so? Is it not important to have?
Thanks
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