The Computer Language
Benchmarks Game

Java versus C++ g++ fastest programs

by faster benchmark performance

reverse-complement
source secs mem gz cpu cpu load
Java 3.32 609,712 2183 7.54 64% 44% 44% 76%
C++ g++ 2.93 980,716 2280 4.52 51% 23% 33% 51%
pidigits
source secs mem gz cpu cpu load
Java 3.13 37,364 938 3.36 99% 2% 3% 4%
C++ g++ 1.89 4,380 513 1.88 2% 99% 4% 2%
fasta
source secs mem gz cpu cpu load
Java 2.32 42,212 2473 6.30 65% 85% 47% 76%
C++ g++ 1.33 1,740 2711 4.29 81% 81% 81% 82%
fannkuch-redux
source secs mem gz cpu cpu load
Java 17.98 31,180 1282 70.57 97% 99% 97% 99%
C++ g++ 10.12 1,852 980 39.95 100% 100% 96% 100%
spectral-norm
source secs mem gz cpu cpu load
Java 4.26 33,572 950 16.39 96% 96% 98% 95%
C++ g++ 1.98 1,164 1044 7.87 99% 99% 99% 100%
binary-trees
source secs mem gz cpu cpu load
Java 8.39 960,056 835 27.39 81% 85% 74% 90%
C++ g++ 3.68 119,052 809 11.93 98% 76% 77% 78%
k-nucleotide
source secs mem gz cpu cpu load
Java 8.74 470,116 1812 27.12 71% 73% 93% 74%
C++ g++ 3.73 156,080 1624 11.60 75% 70% 72% 96%
n-body
source secs mem gz cpu cpu load
Java 22.00 32,272 1489 22.07 1% 0% 0% 100%
C++ g++ 9.37 1,712 1808 9.37 0% 2% 1% 100%
mandelbrot
source secs mem gz cpu cpu load
Java 6.96 76,316 796 27.06 97% 97% 97% 97%
C++ g++ 1.51 25,640 1791 5.99 100% 100% 99% 99%
regex-redux
source secs mem gz cpu cpu load
Java 10.50 571,736 929 31.63 71% 73% 66% 92%
C++ g++ 1.83 203,520 1315 4.41 50% 45% 100% 49%
Java

openjdk 11 2018-09-25
OpenJDK Runtime Environment 18.9 (build 11+28)
OpenJDK 64-Bit Server VM 18.9 (build 11+28, mixed mode)

C++ g++

g++ (Ubuntu 8.2.0-7ubuntu1) 8.2.0