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## main.md

      
        
          
            
              
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              Last active
              January 5, 2023 05:38
            
              
                Memcpy is faster than memset on Intel i7 12700 with glibc 2.36
              
          
        
      
        
  
      
    The code memset_test.cpp:
#include <cstdio>
#include <cstring>

void *my_memset(void *s, int c, size_t n) {
    constexpr size_t threshold = 2 * 2048 * 2048;  // 2 MiB
    if (n > threshold) {
        // Only memset the first 2 MiB part of s