Table-A) CPU performance: 10.6.r09rr vs 10.6.r09 
Legend:
10.6.r09     = geant4-10-06-ref-09
10.6.r09     = geant4-10-06-ref-09, re-profiled in Nov.2020

Average (CPU Time)/Event: 10.6.r09 vs 10.6.r09rr
#----------------------------------------------------------------------------
#  106r09                  106r09rr              100*(rr-r09)/r09  sample
#
#  mean      error         mean      error       %diff error
#----------------------------------------------------------------------------

 276.9600   2.4413 	  275.1800   2.2941 	  -0.6  1.2	 higgs.FTFP_BERT.1400.4 
  218.7700   2.3496 	  216.6700   2.2218 	  -1.0  1.5	 higgs.FTFP_BERT.1400.0 
   16.2090   0.1063 	   16.1540   0.0940 	  -0.3  0.9	 e-100MeV.FTFP_BERT.100MeV.4 
   35.8650   0.2335 	   36.3210   0.2584 	   1.3  1.0	 e-100MeV.Shielding.100MeV.4 
  106.3000   0.6485 	  106.3100   0.8204 	   0.0  1.0	 e-100MeV.Shielding_EMZ.100MeV.4 
    0.0142   0.0001 	    0.0141   0.0001 	  -0.7  1.0	 e-.FTFP_BERT.1.0 
    0.0712   0.0005 	    0.0706   0.0004 	  -0.8  0.9	 e-.FTFP_BERT.5.0 
    0.1428   0.0009 	    0.1415   0.0008 	  -0.9  0.8	 e-.FTFP_BERT.10.0 
    0.7000   0.0059 	    0.6931   0.0040 	  -1.0  1.0	 e-.FTFP_BERT.50.0 
    0.0192   0.0001 	    0.0191   0.0001 	  -0.5  0.7	 e-.FTFP_BERT.1.4 
    0.0964   0.0007 	    0.0961   0.0005 	  -0.3  0.9	 e-.FTFP_BERT.5.4 
    0.1929   0.0014 	    0.1919   0.0010 	  -0.5  0.9	 e-.FTFP_BERT.10.4 
    0.9522   0.0075 	    0.9473   0.0054 	  -0.5  1.0	 e-.FTFP_BERT.50.4 
    0.0241   0.0001 	    0.0240   0.0001 	  -0.4  0.6	 pi-.FTFP_BERT.1.0 
    0.0980   0.0005 	    0.0973   0.0005 	  -0.7  0.7	 pi-.FTFP_BERT.5.0 
    0.1840   0.0010 	    0.1825   0.0008 	  -0.8  0.7	 pi-.FTFP_BERT.10.0 
    0.8561   0.0054 	    0.8487   0.0045 	  -0.9  0.8	 pi-.FTFP_BERT.50.0 
    0.0276   0.0001 	    0.0275   0.0001 	  -0.4  0.5	 pi-.FTFP_BERT.1.4 
    0.1151   0.0005 	    0.1147   0.0005 	  -0.3  0.6	 pi-.FTFP_BERT.5.4 
    0.2207   0.0011 	    0.2189   0.0010 	  -0.8  0.7	 pi-.FTFP_BERT.10.4 
    1.0432   0.0063 	    1.0375   0.0055 	  -0.5  0.8	 pi-.FTFP_BERT.50.4 
    0.0276   0.0001 	    0.0274   0.0001 	  -0.7  0.5	 pi-.QGSP_BERT.1.4 
    0.1149   0.0005 	    0.1146   0.0005 	  -0.3  0.6	 pi-.QGSP_BERT.5.4 
    0.2194   0.0010 	    0.2183   0.0009 	  -0.5  0.6	 pi-.QGSP_BERT.10.4 
    1.0348   0.0060 	    1.0305   0.0061 	  -0.4  0.8	 pi-.QGSP_BERT.50.4 
    0.0280   0.0001 	    0.0278   0.0001 	  -0.7  0.5	 pi-.QGSP_BIC.1.4 
    0.1193   0.0007 	    0.1186   0.0005 	  -0.6  0.7	 pi-.QGSP_BIC.5.4 
    0.2248   0.0009 	    0.2240   0.0009 	  -0.4  0.6	 pi-.QGSP_BIC.10.4 
    1.0624   0.0063 	    1.0591   0.0055 	  -0.3  0.8	 pi-.QGSP_BIC.50.4 
    0.0650   0.0003 	    0.0651   0.0004 	   0.2  0.8	 anti_proton.FTFP_BERT.1.4 
    0.1538   0.0007 	    0.1542   0.0008 	   0.3  0.7	 anti_proton.FTFP_BERT.5.4 
    0.2612   0.0018 	    0.2602   0.0012 	  -0.4  0.8	 anti_proton.FTFP_BERT.10.4 
    1.0916   0.0064 	    1.0871   0.0065 	  -0.4  0.8	 anti_proton.FTFP_BERT.50.4 
    0.0186   0.0001 	    0.0185   0.0001 	  -0.5  0.8	 proton.FTFP_BERT.1.4 
    0.1116   0.0006 	    0.1110   0.0006 	  -0.5  0.8	 proton.FTFP_BERT.5.4 
    0.2221   0.0012 	    0.2205   0.0011 	  -0.7  0.7	 proton.FTFP_BERT.10.4 
    1.0574   0.0067 	    1.0519   0.0066 	  -0.5  0.9	 proton.FTFP_BERT.50.4 
    0.1211   0.0007 	    0.1204   0.0008 	  -0.6  0.9	 pi-.FTFP_INCLXX.1.4 
    0.4085   0.0023 	    0.4079   0.0029 	  -0.1  0.9	 pi-.FTFP_INCLXX.5.4 
    0.7337   0.0039 	    0.7339   0.0048 	   0.0  0.8	 pi-.FTFP_INCLXX.10.4 
    1.0648   0.0056 	    1.0601   0.0073 	  -0.4  0.9	 pi-.FTFP_INCLXX.15.4 
    0.0968   0.0005 	    0.0966   0.0006 	  -0.2  0.8	 proton.FTFP_INCLXX.1.4 
    0.4614   0.0020 	    0.4613   0.0032 	  -0.0  0.8	 proton.FTFP_INCLXX.5.4 
    0.8360   0.0043 	    0.8362   0.0052 	   0.0  0.8	 proton.FTFP_INCLXX.10.4 
    1.1998   0.0062 	    1.1996   0.0089 	  -0.0  0.9	 proton.FTFP_INCLXX.15.4 
    0.1849   0.0004 	    0.1844   0.0005 	  -0.3  0.3	 proton.FTFP_BERT_HP.1.4 
    0.9853   0.0025 	    0.9825   0.0020 	  -0.3  0.3	 proton.FTFP_BERT_HP.5.4 
    0.1863   0.0005 	    0.1860   0.0004 	  -0.2  0.3	 proton.Shielding.1.4 
    0.9832   0.0025 	    0.9820   0.0023 	  -0.1  0.3	 proton.Shielding.5.4 
    0.1565   0.0011 	    0.1573   0.0012 	   0.5  1.0	 gamma.FTFP_BERT_EMZ_AugerOff.250MeV.0 
    0.2227   0.0017 	    0.2235   0.0015 	   0.4  1.0	 gamma.FTFP_BERT_EMZ_AugerOn.250MeV.0 
    0.0610   0.0004 	    0.0611   0.0004 	   0.2  0.9	 gamma.FTFP_BERT_EMZ_AugerOff.1.0 
    0.0873   0.0008 	    0.0879   0.0006 	   0.7  1.2	 gamma.FTFP_BERT_EMZ_AugerOn.1.0 

#----------------------------------------------------------------------------