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I've always wished I could do some profiling like you get in Wolfram Workbench, but directly from Mathematica, without using or having Workbench. If it is possible, how can I do it?

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Related question. –  Leonid Shifrin Jul 1 '12 at 20:10
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I love the Please help me! part –  belisarius Jul 1 '12 at 20:23
    
also related stackoverflow.com/questions/4721171/… –  belisarius Jul 1 '12 at 20:24
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A shame the Please help me! has been removed from the original post. –  Wizard Jul 9 at 11:14

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up vote 62 down vote accepted

You can put your Mathematica session in debug mode by going to Evaluation->Debugger

Then, make some definitions and wrap the profiled code in RuntimeTools`Profile

For example, in debug mode, run

f[x_] := x^2

Table[f[x], {100000}]; // RuntimeTools`Profile

and you get a nice

Mathematica graphics

As @acl mentioned in the comments, clicking in the gray area in the output notebook's lines takes you to the related code

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Any idea, why test[] := Module[{}, Print["Here"]; Pause[0.1]; Print["There"]; Pause[1]; Return[2]] and test[] // RuntimeTools`Profile does not work, even though your example works correctly? –  Ajasja Jul 2 '12 at 8:37
    
Also, do you happen to know what RuntimeTools`ProfileFunction does? –  Ajasja Jul 2 '12 at 10:15
    
@Ajasja, sorry about the name ;). I am not sure. It don't think this profiler is without quirks. For starters, I think it doesn't account for Pauses, and without those pauses your code is too fast –  Rojo Jul 2 '12 at 19:55
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Unfortunately this solution does not seem to work for more complicated constructs, like funcitons called within Module, etc.. –  Wizard Oct 17 '14 at 11:40
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My issues mentioned in the comment above seem to be resolved in Mathematica 10.1. I also think that Mr.Wizard's suggestion should work in older versions, but I am not sure if I recall that correctly. Sorry for the late reply. –  Wizard Jul 9 at 11:13

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