3.21 Profile

Profile( true )

In this form Profile turns the profiling on. Subsequent computations will record the time spent by each function and the number of times each function was called. Old profiling information is cleared.

Profile( false )

In this form Profile turns the profiling off again. Recorded information is still kept, so you can display it even after turning the profiling off.

Profile()

In this form Profile displays the collected information in the following format.

    gap> Factors( 10^21+1 );;    # make sure that the library is loaded
    gap> Profile( true );
    gap> Factors( 10^42+1 );
    [ 29, 101, 281, 9901, 226549, 121499449, 4458192223320340849 ]
    gap> Profile( false );
    gap> Profile();
     count    time percent time/call child function
         4    1811      76     452    2324  FactorsRho
        18     171       7       9     237  PowerModInt
       127      94       3       0      94  GcdInt
        41      83       3       2     415  IsPrimeInt
        91      59       2       0      59  TraceModQF
       511      47       1       0      39  QuoInt
        22      23       0       1      23  Jacobi
       116      20       0       0      31  log
         3      20       0       6      70  SmallestRootInt
         1      19       0      19    2370  FactorsInt
        26      15       0       0      39  LogInt
         4       4       0       1       4  Concatenation
         5       4       0       0      20  RootInt
         7       0       0       0       0  Add
        26       0       0       0       0  Length
        13       0       0       0       0  NextPrimeInt
         4       0       0       0       0  AddSet
         4       0       0       0       0  IsList
         4       0       0       0       0  Sort
         8       0       0       0       0  Append
              2369     100                  TOTAL 

The last column contains the name of the function. The first column contains the number of times each function was called. The second column contains the time spent in this function. The third column contains the percentage of the total time spent in this function. The fourth column contains the time per call, i.e., the quotient of the second by the first number. The fifth column contains the time spent in this function and all other functions called, directly or indirectly, by this function.

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GAP 3.4.4
April 1997