With kernel/perf 3.7.1, trying to do something akin to the "sum" option of
gprof to pool the samples from multiple runs.
This option from the perf-record man page looked promising:
-A, --append
Append to the output file to do incremental profiling.
bash-4.2$ perf record -F 1000 ./app
bash-4.2$ perf record -F 1000 -A ./app
perf.data gets bigger, but then neither perf report nor perf script work. Both
say:
0x1a0 [0]: failed to process type: 0
Is this a regression?
Thanks,
--
David Flater, National Institute of Standards and Technology, U.S.A.
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