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fooblaster
on Nov 4, 2024
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Limitations of frame pointer unwinding
I often get junk when sampling without lbr. Which kernel are you running? The quality of perf and the associated perf_events varies wildly across kernel versions.
Sesse__
on Nov 4, 2024
[–]
A variety of kernels over the last five years, on a multitude of Intel CPUs. :-) I last tested this on 6.10, I think.
It's certainly true that there can be junk in --call-graph fp, too.
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