Messages in this thread | | | From | Jan-Oliver Kaiser <> | Subject | `perf report` about 1000x(!) slower in linux 4.15 | Date | Tue, 20 Mar 2018 12:57:29 +0100 |
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Dear perf maintainers,
After upgrading my system to linux 4.15 (from 4.14), `perf report` became unusably slow. I estimate a decrease in performance by a factor of 100x-1000x. Some 21M perf.data files take about 30 seconds in the "Processing events" step. `git bisect` points to
commit d8a88dd243a170a226aba33e7c53704db2f82aa6 (HEAD, refs/bisect/bad) Author: Milian Wolff <milian.wolff@kdab.com> perf util: Enable handling of inlined frames by default
The slowdown can be worked around with `--no-inline`. If the slowdown is expected, I would suggest reverting the default setting here or maybe printing a warning if a lot of time is spent on this feature.
Do you need any additional information about my system or the recorded data I am looking at?
Thanks, Janno
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