JMandel - A simple Java vs C++ benchmark

Test results with normal (-client) VM args which means Java is slower by factor 1.37!

Testing mandelbrot iteration implemented in java. Time: 1.552s Time: 1.492s Time: 1.482s Time: 1.482s Time: 1.473s

Testing optimized C version of iteration via JNI Time: 1.101s Time: 1.092s Time: 1.111s Time: 1.092s Time: 1.091s

Test results with -server VM arg which means Java is faster by factor 0.69?

Testing mandelbrot iteration implemented in java. Time: 0.771s Time: 0.761s Time: 0.752s Time: 0.751s Time: 0.761s

Testing optimized C version of iteration via JNI, done by RST.

Time: 1.091s Time: 1.092s Time: 1.091s Time: 1.102s Time: 1.092s

Generated Mandelbrot (ASCII Graphic)

!!!!!!!!!!!!!!!!!!!!!!!!!!!"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

!!!!!!!!!!!!!!!!!!!!!!!!""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

!!!!!!!!!!!!!!!!!!!!!!""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

!!!!!!!!!!!!!!!!!!!"""""""""""""""""""""""""""""########################""""""""""""""""""""""""""""""""""""""""""""""""

!!!!!!!!!!!!!!!!!""""""""""""""""""""##############################################"""""""""""""""""""""""""""""""""""""

!!!!!!!!!!!!!!!""""""""""""""""###################################$$$$$$$$$$$$$$#########"""""""""""""""""""""""""""""""

!!!!!!!!!!!!!"""""""""""""#################################$$$$$$$$$%%&'0)&%%%%$$$$$$$########""""""""""""""""""""""""""

!!!!!!!!!!!!""""""""""################################$$$$$$$$$$$%%%%&&'+7-(''()&%$$$$$$$$########""""""""""""""""""""""

!!!!!!!!!!""""""""################################$$$$$$$$$$$$$%%%%%%&''()+0.*)'&&%%$$$$$$$$$#########""""""""""""""""""

!!!!!!!!!"""""""###############################$$$$$$$$$$$$$$%%%%%%&'(+*+1<?80*((&&%%%%$$$$$$$$#########""""""""""""""""

!!!!!!!""""""###############################$$$$$$$$$$$$$$%%%%&&&&'(*,=É??????D3B+'&%%%%%%%$$$$$$##########"""""""""""""

!!!!!!"""""#############################$$$$$$$$$$$$$$%%%&&&&&&'''((*0?????????8,((''&&&&%%%%%%$$$$##########"""""""""""

!!!!!""""############################$$$$$$$$$$$%%%%%&(8*+,.)())20++,-0<??????6.,+*)*-('''''')+&%$$$###########"""""""""

!!!!"""###########################$$$$$$$$%%%%%%%%&&&''544€;C0-2=??????????????????¯??-**+;6+-.+)%%$$############"""""""

!!!!""########################$$$$$%%%%%%%%%%%%&&&&&'((),3??????????????????????????????6????2+)&&%%$$$###########""""""

!!!"#####################$$$$%%%%%%%%%%%%%%%&&&&&&')-11.Y??????????????????????????????????5.+)''&%%%$$$############""""

!!"###############$$$$$$$%%&',,''&&&&&&''''''''''((*,w`??????????????????????????????????????>+)),&%%$$$#############"""

!!########$$$$$$$$$$$%%%%%&&(*/*)**))*9-*))((((())+G????????????????????????????????????????????r5(&%$$$$#############""

!"####$$$$$$$$$$$$%%%%%%%&&''()+/@NM073U?42D.5+*++.U???????????????????????????????????????????6)(&&%$$$$$############""

!##$$$$$$$$$$$$%%%%%%%%&&''')*+-19?????????????U..Y?????????????????????????????????????????????<)&%%$$$$$#############"

!#$$$$$$$$$$$%%%&&&&&'(+,*)*+-2C?????????????????6????????????????????????????????????????????SE(&%%%$$$$$$############"

!$%%%%%%%&''&&&&&''''()*-8BH?5????????????????????????????????????????????????????????????????)'&&%%%$$$$$$############"

!YdWX\bh|?yu~?tz????ºœ???????????????????????????????????????????????????????????????????5-*)('&&%%%$$$$$$#############

!$%%%%%%%&''&&&&&''''()*-8BH?5????????????????????????????????????????????????????????????????)'&&%%%$$$$$$############"

!#$$$$$$$$$$$%%%&&&&&'(+,*)*+-2C?????????????????6????????????????????????????????????????????SE(&%%%$$$$$$############"

!##$$$$$$$$$$$$%%%%%%%%&&''')*+-19?????????????U..Y?????????????????????????????????????????????<)&%%$$$$$#############"

!"####$$$$$$$$$$$$%%%%%%%&&''()+/@NM073U?42D.5+*++.U???????????????????????????????????????????6)(&&%$$$$$############""

!!########$$$$$$$$$$$%%%%%&&(*/*)**))*9-*))((((())+G????????????????????????????????????????????r5(&%$$$$#############""

!!"###############$$$$$$$%%&',,''&&&&&&''''''''''((*,w`??????????????????????????????????????>+)),&%%$$$#############"""

!!!"#####################$$$$%%%%%%%%%%%%%%%&&&&&&')-11.Y??????????????????????????????????5.+)''&%%%$$$############""""

!!!!""########################$$$$$%%%%%%%%%%%%&&&&&'((),3??????????????????????????????6????2+)&&%%$$$###########""""""

!!!!"""###########################$$$$$$$$%%%%%%%%&&&''544€;C0-2=??????????????????¯??-**+;6+-.+)%%$$############"""""""

!!!!!""""############################$$$$$$$$$$$%%%%%&(8*+,.)())20++,-0<??????6.,+*)*-('''''')+&%$$$###########"""""""""

!!!!!!"""""#############################$$$$$$$$$$$$$$%%%&&&&&&'''((*0?????????8,((''&&&&%%%%%%$$$$##########"""""""""""

!!!!!!!""""""###############################$$$$$$$$$$$$$$%%%%&&&&'(*,=É??????D3B+'&%%%%%%%$$$$$$##########"""""""""""""

!!!!!!!!!"""""""###############################$$$$$$$$$$$$$$%%%%%%&'(+*+1<?80*((&&%%%%$$$$$$$$#########""""""""""""""""

!!!!!!!!!!""""""""################################$$$$$$$$$$$$$%%%%%%&''()+0.*)'&&%%$$$$$$$$$#########""""""""""""""""""

!!!!!!!!!!!!""""""""""################################$$$$$$$$$$$%%%%&&'+7-(''()&%$$$$$$$$########""""""""""""""""""""""

!!!!!!!!!!!!!"""""""""""""#################################$$$$$$$$$%%&'0)&%%%%$$$$$$$########""""""""""""""""""""""""""

!!!!!!!!!!!!!!!""""""""""""""""###################################$$$$$$$$$$$$$$#########"""""""""""""""""""""""""""""""

!!!!!!!!!!!!!!!!!""""""""""""""""""""##############################################"""""""""""""""""""""""""""""""""""""

!!!!!!!!!!!!!!!!!!!"""""""""""""""""""""""""""""########################""""""""""""""""""""""""""""""""""""""""""""""""

!!!!!!!!!!!!!!!!!!!!!!""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

!!!!!!!!!!!!!!!!!!!!!!!!""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

!!!!!!!!!!!!!!!!!!!!!!!!!!!"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

The flags I used to compile the C iteration loop are /Ot /O2 /GD /G6 /Og (means as much time optimizations as possible).

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