Hi everybody,
I made a simple test to know if it was possible to speed-up php performance by using parallel programming. I modified 2 functions within ./ext/standard/array.c file of PHP-7.0.0RC7 to use openmp and added the -fopenmp flag to the compiler flags in the Makefile. I modified the php functions array_sum() and in_array() to do some benchmarking. I made changes in the php_search_array() function only using the strict comparaison. To make it work in all cases, you have just to do some cut'n'paste, but the source is easier to read with only 1 change. Use : OMP_NUM_THREADS=xx /path_to/php test_file.php to specify xx, the number of threads to use in your test file I got an average speed-up of 3.5 using 4 cores. You can find all details: . Test files . Modified source files . Benchmarks . Faq . . At http://poc.yakpro.com/?php7_performance_boost_parallel_computing My main goal is to initiate a global thinking, among php core developers, concerning the parallel computing and php, at each level: - Core level: For speeding-up functions, but also the interpreter (by parallelizing opcodes pre-fetching for example) - User level: imagine and implement simple and efficient primitives to make the php developer comfortable with parallel programming. A multicore php8 or php9? Wouldn't be cool???? Best regards, Pascal KISSIAN
