Intel Haswell

Intel i7-4770 (Haswell), 3.4 GHz (Turbo Boost off), 22 nm. RAM: 32 GB (PC3-12800 cl11 cr2).

1 GB pages

2 MB pages mode (64-bit Windows)

  Size        Latency       Increase   Description

  32 K     4                           
  64 K     8                       4   + 8 (L2)        
 128 K    10                       2   
 256 K    11                       1
 512 K    24                      13   + 24 (L3)
   1 M    30                       6
   2 M    33                       3
   4 M    35                       2
   8 M    36 + 6 ns        1 +  6 ns
  16 M    36 + 34 ns           28 ns   + 57 ns (RAM)
  32 M    36 + 48 ns           14 ns
  64 M    36 + 54 ns            6 ns
 128 M    40 + 56 ns       4 +  2 ns   + 8 (TLB miss)
 256 M    42 + 57 ns       2 +  1 ns
 512 M    43 + 57 ns       1 +    ns
1024 M    44 + 57 ns       1 +    ns


4 KB pages mode (64-bit Windows)

  Size        Latency       Increase   Description

  32 K     4                           
  64 K     8                       4   + 8 (L2)        
 128 K    10                       2   
 256 K    11                       1
 512 K    28                      17   + 24 (L3) +8 (L1 TLB miss)
   1 M    36                       8
   2 M    40                       4
   4 M    42                       2   
   8 M    48 +  6 ns       6 +  6 ns   + 9 (L2 TLB miss)
  16 M    51 + 34 ns       3 + 28 ns   + 57 ns (RAM)
  32 M    52 + 48 ns       1 + 14 ns
  64 M    53 + 54 ns       1 +  6 ns
 128 M                                 +  9? (PDE cache miss) + 19? (Page walk to L3)

MISC

Links

Haswell at Wikipedia