Re: was profiling broken in 110.63.1?

Profiling occasionally gets broken; I'll look into it for 110.72.

BTW, is there any reason that you are using 110.63, instead of the
more recent versions?

	- John

On Nov 19, 2009, at 6:41 AM, Joe Wells wrote:

> Dear SML/NJ gurus,
> 
> If I enter
> 
>  Backend.Profile.setProfMode true;
>  let fun f 0 = () | f n = f (n - 1)
>  in f 100;
>     Backend.Profile.reportAll TextIO.stdOut
>  end;
> 
> into SML/NJ 110.54, the profiling output I get looks like this:
> 
> %time cumsec #call  name
>          .00   101  it.f.f
>          .00     0  Compilation
>          .00     0  Major GC
>          .00     0  Minor GC
>          .00     0  Other
>          .00     0  Run-time System
> 
> I have not turned on timing mode, so the times are all zero, but the
> count of the number of calls to f is correct.
> 
> In contrast, if I enter the same code in to SML/NJ 110.70, the
> profiling output I get looks like this:
> 
> %time cumsec #call  name
>          .00     0  Compilation
>          .00     0  Major GC
>          .00     0  Minor GC
>          .00     0  Other
>          .00     0  Run-time System
> 
> Notice that the profiler has not recorded any calls to the function f.
> 
> In fact, it seems that the table used by the profiler (as retrieved
> using SMLofNJ.Internals.ProfControl.getTimeArray) does not change at
> all when f is compiled in SML/NJ 110.70, whereas the table can be
> observed to get bigger in 110.54.
> 
> My student Vincent Rahli has tried the profiler on many versions of
> SML/NJ and he reports to me that the failures start in version
> 110.63.1 (which was released two and half years ago).
> 
> Has there been a change in how the profiler is supposed to be used?
> Is there some additional switch that needs to be adjusted
> post-110.63.1 to turn on the instrumentation of compiled code with
> profiling calls?  Or is this just a bug?
> 
> It would be really, really, really helpful if we did not have to
> switch back to using 110.63 in order to get profiling.
> 
> Any help with this issue would be much appreciated!
> 
> -- 
> Thanks,
> 
> Joe
> 
> 
> -- 
> Heriot-Watt University is a Scottish charity
> registered under charity number SC000278.
> 
> 
> ------------------------------------------------------------------------------
> Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day 
> trial. Simplify your report design, integration and deployment - and focus on 
> what you do best, core application coding. Discover what's new with
> Crystal Reports now.  http://p.sf.net/sfu/bobj-july
> _______________________________________________
> Smlnj-list mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/smlnj-list
> 


------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day 
trial. Simplify your report design, integration and deployment - and focus on 
what you do best, core application coding. Discover what's new with
Crystal Reports now.  http://p.sf.net/sfu/bobj-july