---with THP---
#cat  /sys/kernel/mm/transparent_hugepage/enabled
[always] madvise never
# Running mem/memcpy benchmark...
# Copying 1gb Bytes ...

      12.208522 GB/Sec (with prefault)

 Performance counter stats for './perf bench mem memcpy -l 1gb -o':

        26,453,696 cache-misses              #   35.411 % of all cache refs     [57.66%]
        74,704,531 cache-references                                             [58.40%]
             2,297 page-faults                                                 
       146,567,960 dTLB-loads                                                   [58.64%]
       211,648,685 dTLB-stores                                                  [58.63%]
            14,533 dTLB-load-misses          #    0.01% of all dTLB cache hits  [57.46%]
               640 iTLB-loads                                                   [55.74%]
           270,881 iTLB-load-misses          #  42325.16% of all iTLB cache hits  [55.17%]

       0.232425109 seconds time elapsed

---no THP---
#cat  /sys/kernel/mm/transparent_hugepage/enabled
always madvise [never]

# Running mem/memcpy benchmark...
# Copying 1gb Bytes ...

      18.325087 GB/Sec (with prefault)

 Performance counter stats for './perf bench mem memcpy -l 1gb -o':

        28,498,544 cache-misses              #   86.167 % of all cache refs     [57.35%]
        33,073,611 cache-references                                             [57.71%]
           524,540 page-faults                                                 
       453,500,641 dTLB-loads                                                   [57.99%]
       409,255,606 dTLB-stores                                                  [57.99%]
         2,033,985 dTLB-load-misses          #    0.45% of all dTLB cache hits  [57.52%]
             1,180 iTLB-loads                                                   [56.69%]
           539,056 iTLB-load-misses          #  45682.71% of all iTLB cache hits  [56.02%]

       0.485932214 seconds time elapsed