Cache Miss in V-Tune

[PHAM__Tuan_Anh]

Hi everybody,

I'm a new comer, and I wonder if I post in the right place :)

I work as a developer for a telecommunication system (4G core network). Recently, I am using DPDK (http://dpdk.org/) and have to evaluate the its performance. I found the Intel V-Tune,  has been using it for a couple of days. But V-Tune results do not reach my expectation. For instance:

- I implemented a tutorial "Tutorial: Identifying Hardware Issues" in order to find Cache Miss Rate, but it shows nothing.
- I applied V-Tune to run a DPDK example (l2fwd), and got the same result.

My environment:
- Intel(R) Xeon(R) CPU E5-2697A v4 @ 2.60GHz
- Centos OS 7.2.1511

I expect to get "CPI Rate", "LLC Miss", "Branch Mispredict"... because they are important parameters for me, affect to my decision to buy V-Tune or not.

I don't know how to contact any Intel software supporter. So I appreciate anyone here to help me to get above result as they show in the guide (hw_issues_amplxe_lin.pdf)

Thanks in advance,
Tuan Anh PHAM

[Dmitry_P_Intel1]

Hello,

A couple of questions to clarify the situation:

Could you please specify what analysis type did you use to collect data? Was that general exploration? Could you please post a screenshot what you see on summary pane (or output from VTune if you use command line)?

And what VTune version do you use?

Thanks & Regards, Dmitry