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Message: [QUOTE="Zhoran Tvalve, post: 4659410"] Hi there, I play with ruby-prof. Profiling those simple-few-dozens-line scripts seems clear, but when I try to profile `rake --tasks`, as follows C:\InstantRails\rails_apps\projectN>"ruby-prof" "--printer=graph_html" "--file=ruby_prof.rake.html" "--min_percent=1.00" "--" "C:\InstantRails\ruby\bin\rake" --tasks I get reported execution total time from 84 to 102 seconds, while it actually took not more than 25 seconds. I set environment wariable RUBY_PROF_CPU_FREQUENCY to various values scaling them 10 times, but it seemes had no influence on execution total time. Also I tried same with --mode key values cpu, wall. How can I get more realistic totals? win xp sp3, core2duo T2300 @1.66GHz ruby 1.8.6 (2007-09-24 patchlevel 111) [i386-mswin32] [/QUOTE]