The Computer Language
24.04 Benchmarks Game

C# .NET versus Java fastest performance

How the programs are written matters! Always look at the source code.

If the fastest programs are hand-written vector instructions, does the host language matter? You might be more interested in the less optimised programs — more seconds, less gz source code.

fannkuch-redux
source secs mem gz cpu secs
C# .NET #8 2.24 31,032 1485 8.62
C# .NET #2 29.55 30,632 584 29.53
C# .NET #6 8.66 30,828 1075 34.31
C# .NET #9 9.07 31,908 1232 35.94
Java #3 40.76 42,844 1264 40.83
Java 10.98 42,812 1289 43.36
Java #2 44.03 40,916 520 44.09
C# .NET #3 11.42 30,848 1117 44.84
C# .NET #7   Bad Output  
n-body
source secs mem gz cpu secs
C# .NET #9 3.16 29,972 2480 3.15
C# .NET #4 3.78 30,096 2137 3.77
C# .NET #7 4.80 30,216 1715 4.78
C# .NET #6 4.82 30,324 1754 4.81
C# .NET #3 6.64 31,228 1311 6.63
C# .NET #2 6.83 31,272 1350 6.81
C# .NET #8 6.83 31,272 1339 6.81
Java #5 6.78 41,384 1435 6.82
Java #4 6.87 41,188 1495 6.91
Java #2 7.42 41,308 1430 7.46
Java #3 7.47 41,256 1436 7.51
C# .NET 7.79 31,348 1424 7.78
Java 7.85 41,512 1437 7.89
spectral-norm
source secs mem gz cpu secs
C# .NET #5 0.95 35,932 776 3.34
C# .NET 5.40 31,236 480 5.38
C# .NET #3 1.56 33,444 890 5.85
Java #3 1.66 42,924 762 6.21
Java 7.07 42,268 521 7.13
Java #2 2.40 42,164 956 9.25
C# .NET #2   Failed  
mandelbrot
source secs mem gz cpu secs
C# .NET 3.22 66,640 1980 12.55
C# .NET #9 3.22 66,616 822 12.56
C# .NET #5 4.04 64,300 851 15.77
Java #4 4.45 104,488 667 16.20
Java #2 4.13 83,152 802 16.22
Java #6 4.28 83,056 808 16.84
Java 25.70 41,388 671 25.76
C# .NET #3 6.79 64,636 722 26.76
Java #3 7.86 83,424 910 30.96
C# .NET #2 46.04 31,568 504 46.01
pidigits
source secs mem gz cpu secs
C# .NET #6 0.97 32,904 1182 0.95
C# .NET #5 0.93 34,944 990 0.95
Java #3 0.93 40,860 770 0.96
C# .NET #4 1.37 33,536 1135 1.35
Java #2 1.34 44,524 944 1.42
C# .NET #7 6.49 53,020 579 7.05
Java 7.61 486,236 807 8.69
regex-redux
source secs mem gz cpu secs
C# .NET #8 1.38 388,784 1881 2.62
C# .NET 4.58 847,208 641 4.81
C# .NET #5 1.96 860,260 679 5.97
Java 8.38 666,804 875 16.42
Java #3 5.17 671,372 935 17.04
Java #6 5.57 1,234,928 746 17.17
C# .NET #4 12.97 960,888 854 44.30
fasta
source secs mem gz cpu secs
Java #4 3.15 42,784 1528 3.26
Java #6 1.18 48,408 2549 3.71
Java #5 1.24 48,752 2478 3.81
Java #2 4.35 47,184 1259 4.50
C# .NET #5 1.49 51,828 1702 5.46
C# .NET 1.87 52,604 2113 6.59
k-nucleotide
source secs mem gz cpu secs
C# .NET 3.02 184,620 2046 10.45
C# .NET #6 4.98 188,080 1615 12.69
Java 5.01 368,104 1821 16.33
Java #6 7.18 365,592 1614 25.01
Java #3 7.30 365,348 1642 25.39
Java #4 34.43 195,584 1887 34.79
Java #5 16.05 219,872 2225 38.17
C# .NET #7 40.57 761,912 1449 41.01
C# .NET #4 11.52 775,588 1725 41.26
reverse-complement
source secs mem gz cpu secs
C# .NET #8 0.56 730,092 2641 1.32
C# .NET 2.97 798,068 1130 3.12
C# .NET #5 2.63 1,026,424 1620 3.63
C# .NET #6 1.60 1,027,884 1627 3.85
Java #6 3.33 2,031,460 760 3.96
C# .NET #7 1.55 935,720 1312 4.20
Java #5 4.73 1,096,344 1115 4.86
Java #4 5.57 1,889,928 656 5.68
Java #7 23.06 1,036,296 1654 6.31
C# .NET #3 7.24 1,572,432 934 11.37
Java #3   Bad Output  
Java #8   Bad Output  
binary-trees
source secs mem gz cpu secs
Java #4 4.50 2,081,744 846 5.22
Java #3 4.80 2,076,860 546 5.59
Java #6 4.84 2,097,072 535 5.60
Java #2 4.93 2,067,656 558 5.67
Java #7 2.57 1,728,452 841 8.00
C# .NET #7 4.57 1,676,420 706 14.45
C# .NET #2 4.83 1,577,904 717 15.52
C# .NET #3 4.91 1,972,604 688 15.69
C# .NET 5.14 2,050,380 668 16.24
C# .NET

.NET SDK 8.0.204
Host Version: 8.0.4
Commit: 2d7eea2529
<AllowUnsafeBlocks>true
<ServerGarbageCollection>true
<ConcurrentGarbageCollection>true
<PublishAot>false
<OptimizationPreference>Speed
<IlcInstructionSet>native

Java

java 22 2024-03-19
Java HotSpot(TM) 64-Bit Server VM
(build 22+36-2370,
mixed mode, sharing)