> I tried "perf record --call-graph fp" but the results seemed odd (e.g., I > see a tcp function symbol deep within a call-branch rooted in the dpdk > crypto device enqueue routine for the marvell mvsam cryptodev).
Just in case, did you try "--call-graph lbr" (on Intel CPU older than Haswell I think) or "--call-graph dwarf"? The frame pointer is usually unreliable with optimized code unfortunately. Best ben
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