Hello, when I run this code in a brand new R session
-------------------------------------------------- ### loading of libraries and other functions Rprof("profiling.out") start.time=proc.time()[3] for(i in 1:50) { main.function() } end.time=proc.time()[3] Rprof() --------------------------------------------------- I get as result of the profiling estimateNACstructureof.R#33 56.6900000 estimateNACstructureof.R#93 5.2200000 estimateNACstructureof.R#87 4.9700000 estimateNACstructureof.R#78 1.9400000 oldFriedman.R#39 1.2600000 estimateNACstructureof.R#81 1.2100000 estimateNACstructureof.R#88 1.2000000 estimateNACstructureof.R#657 0.9600000 todecompose.R#34 0.6900000 estimateNACstructureof.R#658 0.6600000 estimateNACstructureof.R#264 0.6500000 estimateNACstructureof.R#923 0.5900000 aresameNACstructures.R#4 0.5600000 estimateNACstructureof.R#1059 0.4800000 estimateNACstructureof.R#1064 0.4700000 estimateNACstructureof.R#22 0.4600000 estimateNACstructureof.R#659 0.4500000 nicenodenames.R#22 0.4400000 estimateNACstructureof.R#1029 0.4200000 todecompose.R#119 0.4200000 estimateNACstructureof.R#1061 0.4000000 estimateNACstructureof.R#654 0.3800000 todecompose.R#12 0.3800000 estimateNACstructureof.R#85 0.3700000 estimateNACstructureof.R#89 0.3700000 todecompose.R#19 0.3500000 todecompose.R#160 0.3500000 estimateNACstructureof.R#1060 0.3300000 estimateNACstructureof.R#83 0.3100000 todecompose.R#144 0.3100000 sampling.time 207.1400000 total.elapsed.time 235.9440000 total.elapsed.time/samping.time*100 87.79202 Except for the 3 last rows, what we have is the self.pct value in decreasing order, by line. What I do not understand is that if am to run the same code all over again, I now get estimateNACstructureof.R#852 4.34000 estimateNACstructureof.R#923 3.94000 estimateNACstructureof.R#87 3.38000 estimateNACstructureof.R#93 3.31000 estimateNACstructureof.R#859 2.70000 estimateNACstructureof.R#1029 2.27000 estimateNACstructureof.R#657 1.65000 estimateNACstructureof.R#933 1.51000 estimateNACstructureof.R#78 1.49000 estimateNACstructureof.R#721 1.49000 todecompose.R#34 1.49000 estimateNACstructureof.R#658 1.39000 estimateNACstructureof.R#1064 1.26000 estimateNACstructureof.R#1059 1.25000 estimateNACstructureof.R#659 1.21000 estimateNACstructureof.R#1061 1.20000 aresameNACstructures.R#4 1.17000 estimateNACstructureof.R#1060 1.09000 todecompose.R#12 1.00000 todecompose.R#145 0.98000 estimateNACstructureof.R#723 0.97000 getNACadjacencyof.R#10 0.97000 estimateNACstructureof.R#709 0.96000 oldFriedman.R#39 0.90000 estimateNACstructureof.R#81 0.89000 estimateNACstructureof.R#88 0.88000 estimateNACstructureof.R#708 0.88000 todecompose.R#119 0.86000 todecompose.R#160 0.84000 estimateNACstructureof.R#715 0.83000 sampling.time 198.38000 total.elapsed.time 203.56800 total.elapsed.time /samping.time*100 97.45147 And the line 33 of estimateNACstructureof, which previously was observed 56.69% of the sampling time is now... gone ! If I profile he code in the same R session again and again, line 33 of estimateNACstructureof seems never to appear again. In fact the line 33 of estimateNACstructureof appears only when Rprof is run for the first time in the R session. Note: this is maybe relevant, the line 33 of estimateNACstructureof refers to C function. Any thoughts of what I get this peculiar result? [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.