linux - "No impact" stacktrace across all threads of a running process? -


how can stacktraces across threads of running process, on linux x64, in way least invasive , impacting possible?

things i've thought of till now:

  • gdb - i'm afraid slow process much, , long;
  • strace+ - no idea performance has, experience anybody? still, iiuc, traces syscalls, , can't expect each thread enters syscall, threads may hanging;
  • force crash & coredump - yeah... if easily, busy debugging... please, let's assume there's no elephant in room, purpose of question, ok?... pretty please...

there's gcore utility comes gdb. don't need force crash core dump.


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