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in reply to Re^12: "Automated" benchmarking
in thread "Automated" benchmarking

both Devel::SmallProf and Devel::NYTProf are not counting lines but "sentences" executed

Okay. I guess have to take that as read.

I'm still intrigued by the extra 3 'sentences' for the sleep in aaa() though?

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

The start of some sanity?

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Re^14: "Automated" benchmarking
by salva (Canon) on Jan 25, 2012 at 17:40 UTC
    From perldebguts:

    When the execution of your program reaches a point that can hold a breakpoint, the "DB::DB()" subroutine is called if any of the variables $DB::trace, $DB::single, or $DB::signal is true.

    And that's what Devel::SmallProf and Devel::NYTProf are counting, calls to DB::DB().

[reply]

      I wasn't doubting you. Just still puzzling how a subroutine that is called 5000 times can result in 5003 sentences?

      In the other cases, it is fairly easy to see how xxx() for ... ; could result in double the number of sentence as there are lines.

      But those odd 3 are just beyond my ability to reason.

      With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
      Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
      "Science is about questioning the status quo. Questioning authority".
      In the absence of evidence, opinion is indistinguishable from prejudice.

      The start of some sanity?
[reply]
[d/l]
        With perl 5.8.9 on Linux, replacing the calls to Win32::Sleep by calls to Time::HiRes::nanosleep, I get the expected count of 5000.

        Probably, that 3 extra sentences are from some callback run from Win32::Sleep the first time it is called. Maybe you could use Devel::Trace or single step through the debugger to see what's going on.

[reply]

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