The Computer Language
Benchmarks Game

C# .NET 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 1.43 320,400 1869 2.67 33% 39% 85% 31%
Java 5.70 656,328 929 18.25 89% 76% 79% 75%
spectral-norm
source secs mem gz busy cpu load
C# .NET 0.82 34,720 764 2.98 91% 88% 89% 98%
Java 1.68 38,348 950 6.43 96% 96% 96% 95%
k-nucleotide
source secs mem gz busy cpu load
C# .NET 3.28 182,680 2044 11.09 87% 83% 73% 94%
Java 5.00 408,040 1812 16.36 74% 81% 86% 86%
n-body
source secs mem gz busy cpu load
C# .NET 4.86 32,760 1742 4.96 0% 1% 100% 2%
Java 6.75 35,200 1489 6.83 0% 0% 100% 1%
fannkuch-redux
source secs mem gz busy cpu load
C# .NET 8.40 30,788 1225 33.30 100% 99% 99% 99%
Java 11.00 34,104 1282 43.42 99% 98% 98% 99%
mandelbrot
source secs mem gz busy cpu load
C# .NET 3.14 64,716 1974 12.28 99% 97% 97% 97%
Java 4.11 68,204 796 16.20 98% 99% 98% 99%
binary-trees
source secs mem gz busy cpu load
C# .NET 2.35 807,172 753 7.82 83% 88% 84% 78%
Java 2.50 2,487,096 835 7.90 88% 75% 75% 79%
reverse-complement
source secs mem gz busy cpu load
C# .NET 1.48 959,848 1310 4.18 30% 63% 93% 96%
Java 1.54 702,332 2183 3.55 78% 46% 49% 57%
fasta
source secs mem gz busy cpu load
C# .NET 1.16 96,136 1691 4.31 96% 95% 92% 89%
Java 1.20 44,124 2543 3.61 79% 86% 69% 65%
pidigits
source secs mem gz busy cpu load
C# .NET 0.83 31,700 1168 1.02 1% 2% 21% 98%
Java 0.79 35,568 764 0.84 99% 3% 3% 1%
C# .NET

.NET SDK 5.0.100
Host Version: 5.0.0; Commit: cf258a14b7
<ServerGarbageCollection>true

Java

openjdk 15 2020-09-15
OpenJDK Runtime Environment (build 15+36-1562)
OpenJDK 64-Bit Server VM (build 15+36-1562, mixed mode, sharing)