The benchmarks here do not try to be complete, as they are showing the performance of the languages in one aspect, and mainly: loops, dynamic arrays with numbers, basic math operations.
Here are the benchmark results:
|Language||CPU time||Slower than||Language
|C++ (optimized with -O2)||0.952||0.172||1.124||–||–||g++ 5.3.1||link|
|Java 8 (non-std lib)||1.332||0.096||1.428||27%||27%||1.8.0_72||link|
|Python 2.7 + PyPy||1.560||0.160||1.720||53%||20%||PyPy 4.0.1||link|
|C++ (not optimized)||2.988||0.168||3.156||181%||55%||g++ 5.3.1||link|
The clear winner among the script languages is… PHP 7.
Yes, that’s not a mistake. Apparently the PHP team did a great job! The rumor that PHP 7 is really fast confirmed for this particular benchmark test. You can also review the PHP 7 infographic by the Zend Performance Team.
Brief analysis of the results:
- NodeJS got almost 2x faster.
- Java 8 seems almost 2x slower.
- Python has no significant change in the performance. Every new release is a little bit faster but overall Python is steadily 15x slower than C++.
- Perl has the same trend as Python and is steadily 22x slower than C++.
- PHP 5.x is the slowest with results between 47x to 60x behind C++.
- PHP 7 made the big surprise. It is about 10x faster than PHP 5.x, and about 3x faster than Python which is the next fastest script language.
The tests were run on a Debian Linux 64-bit machine.
You can download the source codes, an Excel results sheet, and the benchmark batch script at: