This macro run several tests and produces an benchmark report. 
 
hsimple   : Real Time =   0.04 seconds Cpu Time =   0.04 seconds
(TFile *) 0x34f85f0
 
Object statistics
class                         cnt    on heap     size    total size    heap size
================================================================================
TList                         132        132      104         13728        13728
TObjectTable                    1          1       32            32           32
TROOT                           1          0      728           728            0
TPluginManager                  1          1       40            40           40
THashTable                      2          2       72           144          144
TClassTable                     1          1       16            16           16
THashList                       1          1      112           112          112
TEnv                            1          1       56            56           56
TEnvRec                       146        146       96         14016        14016
TUnixSystem                     1          1      672           672          672
TOrdCollection                  4          4       72           288          288
--------------------------------------------------------------------------------
Total:                        291        290     2000         29832        29104
================================================================================
 
Formula based function:     sqroot 
               sqroot : x*gaus(0) + [3]*form1 Ndim= 1, Npar= 4, Number= 0 
 Formula expression: 
   x*[p0]*exp(-0.5*((x-[p1])/[p2])*((x-[p1])/[p2]))+[p3]*(abs(sin(x)/x)) 
****************************************
Minimizer is Minuit2 / Migrad
Chi2                      =      202.552
NDf                       =          188
Edm                       =  2.91887e-08
NCalls                    =          149
p0                        =      32.6905   +/-   0.533225    
p1                        =      3.97178   +/-   0.0177951   
p2                        =       1.0081   +/-   0.0133754   
p3                        =      63.3732   +/-   1.33997     
TFile**     /github/home/ROOT-CI/build/tutorials/hsimple.root  Demo ROOT file with histograms
 TFile*     /github/home/ROOT-CI/build/tutorials/hsimple.root  Demo ROOT file with histograms
  KEY: TH1F hpx;1 This is the px distribution
  KEY: TH2F hpxpy;1  py vs px
  KEY: TProfile   hprof;1  Profile of pz versus px
  KEY: TNtuple ntuple;1 Demo ntuple
 i 0 0.000000 1.986693 
 i 1 0.100000 2.955202 
 i 2 0.200000 3.894183 
 i 3 0.300000 4.794255 
 i 4 0.400000 5.646425 
 i 5 0.500000 6.442177 
 i 6 0.600000 7.173561 
 i 7 0.700000 7.833269 
 i 8 0.800000 8.414710 
 i 9 0.900000 8.912074 
 i 10 1.000000 9.320391 
 i 11 1.100000 9.635582 
 i 12 1.200000 9.854497 
 i 13 1.300000 9.974950 
 i 14 1.400000 9.995736 
 i 15 1.500000 9.916648 
 i 16 1.600000 9.738476 
 i 17 1.700000 9.463001 
 i 18 1.800000 9.092974 
 i 19 1.900000 8.632094 
 i 0 -3.000000 -0.989992 
 i 1 -2.684211 -0.897212 
 i 2 -2.368421 -0.715699 
 i 3 -2.052632 -0.463406 
 i 4 -1.736842 -0.165284 
 i 5 -1.421053 0.149185 
 i 6 -1.105263 0.448899 
 i 7 -0.789474 0.704219 
 i 8 -0.473684 0.889894 
 i 9 -0.157895 0.987561 
 i 10 0.157895 0.987561 
 i 11 0.473684 0.889894 
 i 12 0.789474 0.704219 
 i 13 1.105263 0.448899 
 i 14 1.421053 0.149185 
 i 15 1.736842 -0.165284 
 i 16 2.052632 -0.463406 
 i 17 2.368421 -0.715699 
 i 18 2.684211 -0.897212 
 i 19 3.000000 -0.989992 
tornado   : Real Time =   0.00 seconds Cpu Time =   0.00 seconds
na49      : Real Time =   0.00 seconds Cpu Time =   0.00 seconds
geometry  : Real Time =   0.01 seconds Cpu Time =   0.02 seconds
na49view  : Real Time =   0.00 seconds Cpu Time =   0.00 seconds
****************************************
Minimizer is Linear / Migrad
Chi2                      =      16.5378
NDf                       =           68
p0                        =      1.04821   +/-   0.226552    
p1                        =    0.0133784   +/-   0.0420448   
p2                        =     0.956034   +/-   0.0245116   
ntuple1   : Real Time =   0.04 seconds Cpu Time =   0.03 seconds
---------------ROOT 6.36.05 benchmarks summary--------------------
hsimple   : Real Time =   0.04 seconds Cpu Time =   0.04 seconds
tornado   : Real Time =   0.00 seconds Cpu Time =   0.00 seconds
na49      : Real Time =   0.00 seconds Cpu Time =   0.00 seconds
geometry  : Real Time =   0.01 seconds Cpu Time =   0.02 seconds
na49view  : Real Time =   0.00 seconds Cpu Time =   0.00 seconds
ntuple1   : Real Time =   0.04 seconds Cpu Time =   0.03 seconds
TOTAL     : Real Time =   0.10 seconds Cpu Time =   0.09 seconds
 
---------------ROOT 6.36.05 benchmarks summary (in ROOTMARKS)-----
   For comparison, a Pentium IV 2.4Ghz is benchmarked at 600 ROOTMARKS
hsimple     = 3952.28 RealMARKS,  = 4200.00 CpuMARKS
tornado     = 78349.39 RealMARKS,  =     inf CpuMARKS
na49        = 307196.75 RealMARKS,  =     inf CpuMARKS
geometry    = 8565.63 RealMARKS,  = 5400.00 CpuMARKS
na49view    = 9494.15 RealMARKS,  =     inf CpuMARKS
ntuple1     = 4178.57 RealMARKS,  = 5400.00 CpuMARKS
 
****************************************************
* Your machine is estimated at 20694.04 ROOTMARKS   *
****************************************************