Filtering GHC profile with awk

gistfile1.txt

# Show the cost-centres with at least 2% accumulated time
% awk '$7 > 2' benchmark.prof
	Thu Nov 24 22:56 2011 Time and Allocation Profiling Report  (Final)
	total time  =        9.24 secs   (462 ticks @ 20 ms)
	total alloc = 6,124,320,224 bytes  (excludes profiling overheads)
MAIN                     MAIN                                                   1           0   0.0    0.0   100.0  100.0
 main                    Main                                                 322           1   0.0    0.0   100.0  100.0
  =~                     Text.Regex.Applicative.Interface                     323           1   0.0    0.0   100.0  100.0
   match                 Text.Regex.Applicative.Interface                     324           1   0.0    0.0   100.0  100.0
    step                 Text.Regex.Applicative.Object                        339         800   9.5    4.2    52.4    9.2
     addThread           Text.Regex.Applicative.Object                        344    21188900   5.8    4.2    42.9    5.0
      insertUnique       Text.Regex.Applicative.StateQueue                    345    21188599  37.0    0.8    37.0    0.8
    compile              Text.Regex.Applicative.Object                        325           1   0.0    0.0    47.6   90.8
     compile             Text.Regex.Applicative.Compile                       331           1   0.0    0.0    47.6   90.8
      compile2           Text.Regex.Applicative.Compile                       332        4506  47.6   90.8    47.6   90.8