The Computer Language
Benchmarks Game

C# .NET Core versus Java fastest programs

Always look at the source code.

These are only the fastest programs. Look at the other programs. They may seem more-like a fair comparison to you.

regex-redux
source secs mem gz busy cpu load
C# .NET Core 2.17 267,768 1869 4.26 36% 30% 84% 46%
Java 10.31 644,560 740 31.47 72% 72% 92% 70%
spectral-norm
source secs mem gz busy cpu load
C# .NET Core 2.14 36,360 764 8.11 93% 98% 95% 93%
Java 4.22 36,948 950 16.43 98% 97% 98% 96%
k-nucleotide
source secs mem gz busy cpu load
C# .NET Core 5.74 183,856 2044 18.58 81% 92% 77% 73%
Java 9.33 447,976 1812 29.36 73% 83% 82% 77%
pidigits
source secs mem gz busy cpu load
C# .NET Core 2.11 36,632 973 2.21 99% 2% 1% 3%
Java 3.07 39,320 938 3.31 2% 5% 3% 98%
binary-trees
source secs mem gz busy cpu load
C# .NET Core 5.74 842,220 753 20.31 92% 87% 84% 91%
Java 8.32 953,620 835 28.37 95% 87% 81% 77%
fasta
source secs mem gz busy cpu load
C# .NET Core 1.70 84,508 1691 6.36 95% 92% 90% 98%
Java 2.22 45,172 2473 5.99 61% 50% 98% 60%
fannkuch-redux
source secs mem gz busy cpu load
C# .NET Core 11.14 31,952 1225 44.17 99% 99% 99% 99%
Java 14.33 34,888 1282 56.56 99% 98% 99% 98%
mandelbrot
source secs mem gz busy cpu load
C# .NET Core 5.60 65,296 816 21.78 96% 97% 99% 96%
Java 6.83 79,108 796 26.86 97% 99% 99% 99%
reverse-complement
source secs mem gz busy cpu load
C# .NET Core 3.11 1,029,996 1621 7.76 75% 95% 41% 38%
Java 3.16 712,368 2183 7.08 65% 47% 42% 70%
n-body
source secs mem gz busy cpu load
C# .NET Core 21.82 33,956 1305 22.24 1% 1% 1% 100%
Java 21.93 35,408 1429 22.44 1% 0% 100% 1%
C# .NET Core

.NET Core SDK 3.0.100
Host Version: 3.0.0; Commit: 95a0a61858
<ServerGarbageCollection>true
<ConcurrentGarbageCollection>true

Java

openjdk 13 2019-09-17
OpenJDK Runtime Environment (build 13+33)
OpenJDK 64-Bit Server VM (build 13+33, mixed mode, sharing)