I didn't quite understand that. According to the profiler Method1 is invoked 2335 times, same as the other ones. Also, it seems the profiler is unreliable since the run times fluctuate wildly when I run the program repeatedly.

Now I get:

Total Elapsed Time = 0.150962 Seconds
  User+System Time = 0.149962 Seconds
Exclusive Times
%Time ExclSec CumulS #Calls sec/call Csec/c  Name
 20.0   0.030  0.028   2335   0.0000 0.0000  main::method1
 10.6   0.016  0.014   2335   0.0000 0.0000  main::method3
 10.6   0.016  0.016      1   0.0160 0.0160  warnings::BEGIN
 0.00   0.000  0.016      2   0.0000 0.0080  main::BEGIN
 0.00   0.000 -0.000      1   0.0000      -  strict::import
 0.00   0.000 -0.000      1   0.0000      -  strict::bits
 0.00   0.000 -0.000      1   0.0000      -  Exporter::import
 0.00   0.000 -0.000      1   0.0000      -  warnings::import
 0.00   0.000 -0.002   2335   0.0000      -  main::method2
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