[Bug runtime/2725] Attempting to probe all kernel functions hangs FC5

joshua dot i dot stone at intel dot com sourceware-bugzilla@sourceware.org
Thu Jun 1 21:02:00 GMT 2006


------- Additional Comments From joshua dot i dot stone at intel dot com  2006-06-01 21:01 -------
I think it has to do with printing within the * probe.  I tried the following on
i686 RHEL4:

  probe begin { log("begin") }
  probe kernel.function("*") { }
  probe end { log("end") }

This had no problem.  The system was a bit slow, but still usable and reasonably
responsive.  Then I tried this:

  probe begin { log("begin") }
  probe kernel.function("*") { print(".") }
  probe end { log("end") }

This hung the system.  The simple print(".") will still create a lot of data --
perhaps something in the buffer flush is being overwhelmed, or causing a recursion?

-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=2725

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