topic Hi Thomas, in Software Tuning, Performance Optimization & Platform Monitoring

Programming PEBS Counters

Arnabjyoti_K_ — Sat, 27 May 2017 16:17:45 GMT

Hi,

I was looking for ways to program PEBS counters in such a way that I can modify the PEBS-Counter Reset value to something other than zero. This is because I want to see if I can log more memory-access samples than I usually do when the counter reset value is zero. Is there any sample code or sources that I can see and understand in order to program the PEBS counters on my own ?

I have already read the Intel SDM Chapter 18 to understand how PEBS counters work and the steps involved to modify the counters. But I wanted to see some sample code that would help me to understand how it is done in code.

Best,
Arnabjyoti Kalita

Andi's pmu-tools contain some

Thomas_W_Intel — Tue, 30 May 2017 13:49:27 GMT

Andi's pmu-tools contain some code for PEBS. However, I must confess that I never used it so far.

Hi Thomas,

Arnabjyoti_K_ — Thu, 01 Jun 2017 21:13:16 GMT

Hi Thomas,

Thanks for the help. Yes I saw there is a simple reference loadable kernel driver for PEBS available in Andi-Kleen's PMU tools. I hope I can use it for testing purposes.