nios performance

i think, your code can be presented as following

{
       int idx_1, idx_2;
       
       for( idx_1 = 0; idx_1 < 6; idx_1++)
      {
             for(idx_2 = 0; idx_2 < 16; idx_2++)
             {
                   p->a =  q->b;
              }
       }
}