echo ::memstat | mdb -k

Page Summary Pages Bytes %Tot
----------------- ---------------- ---------------- ----
Kernel 86154 336.5M 22%
Guest 0 0 0%
ZFS Metadata 18383 71.8M 5%
ZFS File Data 121791 475.7M 31%
Anon 41885 163.6M 11%
Exec and libs 1225 4.7M 0%
Page cache 5807 22.6M 1%
Free (cachelist) 4619 18.0M 1%
Free (freelist) 113239 442.3M 29%
Total 393103 1.4G