0 Replies Latest reply on Feb 10, 2017 8:54 AM by pzhou

    CPU clock numbers reported in codeXL


      I'm using code XL to measure CPU L2 requests, L2 misses, CPU clocks on a Carrizo system, which has 4 cores.

      for example, I got the following data:

         CPU clocks: 426794

         L2 request:   281557

         L2 misses:   115241

        L2 fill/writeback: 275666


      my question is about clocks, since there are four cores in this APU, is the CPU clocks the sum of all clocks elapsed on all 4 cores? which of the following is true?

      426794 = clock elapsed from Core 1 + ... clocks elapsed from Core 4

      426794 = total sample time, it is not related to the number of cores