Query about a strange 'perf top' output
Hi,
I'm running a C++ program (HPCG benchmark) on an ARM processor based board (Juno) with 64-bit Fedora 21 OS. When I run perf top in another terminal to find which functions are taking more CPU time, I get an output like below. 75.84 xhpcg [.] ComputeSYMGS_ref 22.27% xhpcg [.] ComputeSPMV_ref 1.14% xhpcg [.] ComputeWAXPBY_ref 0.40% xhpcg [.] ComputeDotProduct_ref 0.12% xhpcg [.] ComputeRestriction_ref 0.11% xhpcg [.] ComputeProlongation_ref 0.08% xhpcg [.] ComputeDotProduct_ref The function ComputeDotProduct_ref is printed twice, once on line 4 and again on line 7 (last line). I thoroughly checked source code and found that there is no function overloading for this function and it's defined only once. Then why "perf top" is showing the same function twice ? Thank you. MahendraL |
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