$ vm_stat
Mach Virtual Memory Statistics: (page size of 4096 bytes)
Pages free:                               48773.
Pages active:                           1270927.
Pages inactive:                         1250407.
Pages speculative:                        20082.
Pages throttled:                              0.
Pages wired down:                       1281049.
Pages purgeable:                         319878.
"Translation faults":                6699907908.
Pages copy-on-write:                  522715692.
Pages zero filled:                   3412419017.
Pages reactivated:                     50664870.
Pages purged:                         110257799.
File-backed pages:                       314501.
Anonymous pages:                        2226915.
Pages stored in compressor:             4227110.
Pages occupied by compressor:            322807.
Decompressions:                        70281231.
Compressions:                          99437678.
Pageins:                              179708098.
Pageouts:                               2695325.
Swapins:                               37057885.
Swapouts:                              40482683.