Messages in this thread | | | Date | Fri, 2 Sep 2022 17:50:22 +0300 | Subject | Re: perf top -p broken for multithreaded processes since 5.19 | From | Adrian Hunter <> |
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On 2/09/22 17:46, Tomáš Trnka wrote: > Hello, > > A bug in perf v5.19 and newer completely breaks monitoring multithreaded > processes using "perf top -p". The tool fails to start with "Failed to mmap > with 22 (Invalid argument)". It still seems to work fine on single-threaded > processes. "perf record" is also unaffected.
It has been reported here:
https://bugzilla.kernel.org/show_bug.cgi?id=216441
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