I am trying to understand frequincy of transition of EIST (Enhanced Intel SpeedStep® Technology) on CPU, or rather frequency of change of CPU frequency.
I found only one event EIST_TRANS (if other available, I would be glad to know).
EIST_TRANS isn't supported in vTune, so I configured its collection via home-made cli tool and collected values. No frequincy transition was detected.
The question is, whether EIST_TRANS supported on SB or not. Are there any tricks to collect transitions?
Name Intel Xeon E5 2680
Codename Sandy Bridge-EP/EX
Specification Intel(R) Xeon(R) CPU E5-2680 0 @ 2.70GHz