Table-A) CPU performance: 10.6.c00, rebuilt and rerun, vs 10.5.r10 
Legend:
10.5.r10  = geant4-10-05-ref-10  
10.6.c00  = geant4-10-06-cand-00 

Average (CPU Time)/Event: 10.5.r10  vs 10.6.c00
#----------------------------------------------------------------------------
#  105r10                  106c00                100*(c00-r10)/r10  sample
#
#  mean      error         mean      error       %diff error
#----------------------------------------------------------------------------
  275.1500   3.2399 	  269.5400   2.3728 	  -2.0  1.4	 higgs.FTFP_BERT.1400.4 
   16.1790   0.0880 	   16.0950   0.0986 	  -0.5  0.8	 e-100MeV.FTFP_BERT.100MeV.4 
   34.9130   0.2111 	   35.1380   0.2773 	   0.6  1.0	 e-100MeV.Shielding.100MeV.4 
  103.0000   0.5968 	  107.0000   0.7957 	   3.9  1.0	 e-100MeV.Shielding_EMZ.100MeV.4 
    0.0148   0.0001 	    0.0142   0.0001 	  -4.1  0.9	 e-.FTFP_BERT.1.0 
    0.0741   0.0004 	    0.0708   0.0004 	  -4.5  0.7	 e-.FTFP_BERT.5.0 
    0.1479   0.0007 	    0.1417   0.0008 	  -4.2  0.7	 e-.FTFP_BERT.10.0 
    0.7086   0.0048 	    0.6945   0.0032 	  -2.0  0.8	 e-.FTFP_BERT.50.0 
    0.0195   0.0001 	    0.0192   0.0001 	  -1.5  0.7	 e-.FTFP_BERT.1.4 
    0.0974   0.0005 	    0.0961   0.0006 	  -1.3  0.8	 e-.FTFP_BERT.5.4 
    0.1952   0.0013 	    0.1920   0.0010 	  -1.6  0.8	 e-.FTFP_BERT.10.4 
    0.9470   0.0067 	    0.9484   0.0048 	   0.1  0.9	 e-.FTFP_BERT.50.4 
    0.0248   0.0001 	    0.0245   0.0001 	  -1.2  0.6	 pi-.FTFP_BERT.1.0 
    0.0996   0.0005 	    0.0987   0.0004 	  -0.9  0.6	 pi-.FTFP_BERT.5.0 
    0.1844   0.0009 	    0.1844   0.0009 	   0.0  0.7	 pi-.FTFP_BERT.10.0 
    0.8463   0.0051 	    0.8588   0.0054 	   1.5  0.9	 pi-.FTFP_BERT.50.0 
    0.0281   0.0001 	    0.0279   0.0001 	  -0.7  0.5	 pi-.FTFP_BERT.1.4 
    0.1174   0.0006 	    0.1158   0.0005 	  -1.4  0.7	 pi-.FTFP_BERT.5.4 
    0.2221   0.0011 	    0.2220   0.0009 	  -0.0  0.6	 pi-.FTFP_BERT.10.4 
    1.0413   0.0063 	    1.0485   0.0056 	   0.7  0.8	 pi-.FTFP_BERT.50.4 
    0.0282   0.0002 	    0.0279   0.0001 	  -1.1  0.8	 pi-.QGSP_BERT.1.4 
    0.1174   0.0007 	    0.1160   0.0005 	  -1.2  0.7	 pi-.QGSP_BERT.5.4 
    0.2223   0.0013 	    0.2221   0.0010 	  -0.1  0.7	 pi-.QGSP_BERT.10.4 
    1.0531   0.0069 	    1.0475   0.0057 	  -0.5  0.8	 pi-.QGSP_BERT.50.4 
    0.0285   0.0001 	    0.0280   0.0001 	  -1.8  0.5	 pi-.QGSP_BIC.1.4 
    0.1204   0.0005 	    0.1195   0.0004 	  -0.7  0.5	 pi-.QGSP_BIC.5.4 
    0.2265   0.0009 	    0.2265   0.0008 	   0.0  0.5	 pi-.QGSP_BIC.10.4 
    1.0732   0.0057 	    1.0679   0.0051 	  -0.5  0.7	 pi-.QGSP_BIC.50.4 
    0.1106   0.0007 	    0.0657   0.0003 	 -40.6  0.5	 anti_proton.FTFP_BERT.1.4 
    0.1853   0.0007 	    0.1543   0.0007 	 -16.7  0.5	 anti_proton.FTFP_BERT.5.4 
    0.2931   0.0013 	    0.2631   0.0011 	 -10.2  0.5	 anti_proton.FTFP_BERT.10.4 
    1.1204   0.0068 	    1.0964   0.0063 	  -2.1  0.8	 anti_proton.FTFP_BERT.50.4 
    0.0189   0.0001 	    0.0186   0.0001 	  -1.6  0.7	 proton.FTFP_BERT.1.4 
    0.1150   0.0006 	    0.1125   0.0005 	  -2.2  0.7	 proton.FTFP_BERT.5.4 
    0.2276   0.0011 	    0.2234   0.0010 	  -1.8  0.6	 proton.FTFP_BERT.10.4 
    1.0570   0.0066 	    1.0640   0.0063 	   0.7  0.9	 proton.FTFP_BERT.50.4 
    0.1219   0.0009 	    0.1197   0.0007 	  -1.8  0.9	 pi-.FTFP_INCLXX.1.4 
    0.4100   0.0030 	    0.4114   0.0021 	   0.3  0.9	 pi-.FTFP_INCLXX.5.4 
    0.7481   0.0062 	    0.7427   0.0035 	  -0.7  0.9	 pi-.FTFP_INCLXX.10.4 
    1.0635   0.0073 	    1.0476   0.0053 	  -1.5  0.8	 pi-.FTFP_INCLXX.15.4 
    0.0976   0.0007 	    0.0964   0.0005 	  -1.2  0.9	 proton.FTFP_INCLXX.1.4 
    0.4667   0.0032 	    0.4606   0.0025 	  -1.3  0.9	 proton.FTFP_INCLXX.5.4 
    0.8462   0.0076 	    0.8493   0.0042 	   0.4  1.0	 proton.FTFP_INCLXX.10.4 
    1.2048   0.0084 	    1.2000   0.0068 	  -0.4  0.9	 proton.FTFP_INCLXX.15.4 
    0.1847   0.0005 	    0.1825   0.0007 	  -1.2  0.5	 proton.FTFP_BERT_HP.1.4 
    0.9791   0.0033 	    0.9661   0.0029 	  -1.3  0.4	 proton.FTFP_BERT_HP.5.4 
    0.1843   0.0005 	    0.1823   0.0005 	  -1.1  0.4	 proton.Shielding.1.4 
    0.9885   0.0030 	    0.9849   0.0025 	  -0.4  0.4	 proton.Shielding.5.4 
    0.1589   0.0010 	    0.1591   0.0010 	   0.1  0.9	 gamma.FTFP_BERT_EMZ_AugerOff.250MeV.0 
    0.2242   0.0012 	    0.2277   0.0017 	   1.6  0.9	 gamma.FTFP_BERT_EMZ_AugerOn.250MeV.0 
    0.0609   0.0004 	    0.0623   0.0005 	   2.3  1.1	 gamma.FTFP_BERT_EMZ_AugerOff.1.0 
    0.0864   0.0006 	    0.0894   0.0006 	   3.5  1.0	 gamma.FTFP_BERT_EMZ_AugerOn.1.0 

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

Table-B) Total Memory : 10.5.r10 vs 10.6.c00
#-----------------------------------------------------------------------------
# total        memory           100*(c00-r10)/r10 
# 105r10          106c00        %diff           sample
#-----------------------------------------------------------------------------
  12608.3000 	  3922.7800 	-68.9	 higgs.FTFP_BERT.1400.4 
  103.4530 	  102.7080 	-0.7	 e-100MeV.FTFP_BERT.100MeV.4 
  53990.3000 	  53987.0000 	-0.0	 e-100MeV.Shielding.100MeV.4 
  97519.0000 	  97518.2000 	-0.0	 e-100MeV.Shielding_EMZ.100MeV.4 
   35.1968 	   34.4524 	-2.1	 e-.FTFP_BERT.1.0 
   36.4618 	   35.7163 	-2.0	 e-.FTFP_BERT.5.0 
   37.4792 	   36.6872 	-2.1	 e-.FTFP_BERT.10.0 
   48.5385 	   46.5176 	-4.2	 e-.FTFP_BERT.50.0 
   35.2014 	   34.4560 	-2.1	 e-.FTFP_BERT.1.4 
   36.2918 	   35.5464 	-2.1	 e-.FTFP_BERT.5.4 
   37.5035 	   36.7580 	-2.0	 e-.FTFP_BERT.10.4 
   46.6220 	   46.7865 	 0.4	 e-.FTFP_BERT.50.4 
   53.8145 	   53.3549 	-0.9	 pi-.FTFP_BERT.1.0 
  100.0110 	  104.5390 	 4.5	 pi-.FTFP_BERT.5.0 
  150.5310 	  141.4390 	-6.0	 pi-.FTFP_BERT.10.0 
  1220.9800 	  479.9330 	-60.7	 pi-.FTFP_BERT.50.0 
   52.2337 	   51.1352 	-2.1	 pi-.FTFP_BERT.1.4 
  102.4760 	  102.8720 	 0.4	 pi-.FTFP_BERT.5.4 
  126.8060 	  147.2510 	16.1	 pi-.FTFP_BERT.10.4 
  1117.0400 	  465.7600 	-58.3	 pi-.FTFP_BERT.50.4 
   52.3750 	   51.2935 	-2.1	 pi-.QGSP_BERT.1.4 
  102.5380 	  102.9220 	 0.4	 pi-.QGSP_BERT.5.4 
  126.8160 	  147.1990 	16.1	 pi-.QGSP_BERT.10.4 
  1414.2200 	  504.1370 	-64.4	 pi-.QGSP_BERT.50.4 
  737.5420 	  778.8040 	 5.6	 pi-.QGSP_BIC.1.4 
  2434.5900 	  2642.6100 	 8.5	 pi-.QGSP_BIC.5.4 
  3549.1000 	  4330.7400 	22.0	 pi-.QGSP_BIC.10.4 
  16142.1000 	  16184.2000 	 0.3	 pi-.QGSP_BIC.50.4 
  3851.1600 	   75.6853 	-98.0	 anti_proton.FTFP_BERT.1.4 
  2768.0000 	  122.4310 	-95.6	 anti_proton.FTFP_BERT.5.4 
  2549.3700 	  174.3030 	-93.2	 anti_proton.FTFP_BERT.10.4 
  3528.4000 	  525.9880 	-85.1	 anti_proton.FTFP_BERT.50.4 
   50.3493 	   48.4299 	-3.8	 proton.FTFP_BERT.1.4 
  116.0920 	  119.1690 	 2.7	 proton.FTFP_BERT.5.4 
  166.5290 	  188.2200 	13.0	 proton.FTFP_BERT.10.4 
  925.9530 	  574.9210 	-37.9	 proton.FTFP_BERT.50.4 
  2197.1000 	  2109.2900 	-4.0	 pi-.FTFP_INCLXX.1.4 
  6734.0100 	  6786.8200 	 0.8	 pi-.FTFP_INCLXX.5.4 
  11799.4000 	  12026.2000 	 1.9	 pi-.FTFP_INCLXX.10.4 
  16867.4000 	  16691.0000 	-1.0	 pi-.FTFP_INCLXX.15.4 
  1830.6300 	  1793.7500 	-2.0	 proton.FTFP_INCLXX.1.4 
  8019.5500 	  8027.6600 	 0.1	 proton.FTFP_INCLXX.5.4 
  14232.1000 	  14234.2000 	 0.0	 proton.FTFP_INCLXX.10.4 
  19872.1000 	  20034.7000 	 0.8	 proton.FTFP_INCLXX.15.4 
  13407.3000 	  13391.0000 	-0.1	 proton.FTFP_BERT_HP.1.4 
  23426.8000 	  23382.6000 	-0.2	 proton.FTFP_BERT_HP.5.4 
  13435.6000 	  13463.9000 	 0.2	 proton.Shielding.1.4 
  23362.9000 	  23516.6000 	 0.7	 proton.Shielding.5.4 
  368.0760 	  367.3300 	-0.2	 gamma.FTFP_BERT_EMZ_AugerOff.250MeV.0 
  655.6600 	  654.9140 	-0.1	 gamma.FTFP_BERT_EMZ_AugerOn.250MeV.0 
  916.8670 	  916.5110 	-0.0	 gamma.FTFP_BERT_EMZ_AugerOff.1.0 
  2062.3200 	  2061.5800 	-0.0	 gamma.FTFP_BERT_EMZ_AugerOn.1.0