Index: head/usr.bin/top/top.local.1
===================================================================
--- head/usr.bin/top/top.local.1	(revision 318447)
+++ head/usr.bin/top/top.local.1	(revision 318448)
@@ -1,74 +1,87 @@
 .\" $FreeBSD$
 .SH "FreeBSD NOTES"
 
 .SH DESCRIPTION OF MEMORY
-Mem: 9220K Active, 1M Inact, 1M Laundry, 3284K Wired, 2M Buf, 932K Free
-ARC: 2048K Total, 342K MRU, 760K MFU, 272K Anon, 96K Header, 442K Other
-Swap: 91M Total, 79M Free, 13% Inuse, 80K In, 104K Out
+Mem: 61M Active, 86M Inact, 368K Laundry, 22G Wired, 102G Free
+ARC: 15G Total, 9303M MFU, 6155M MRU, 1464K Anon, 98M Header, 35M Other
+     15G Compressed, 27G Uncompressed, 1.75:1 Ratio, 174M Overhead
+Swap: 4096M Total, 532M Free, 13% Inuse, 80K In, 104K Out
 .TP
 .B K:
 Kilobyte
 .TP
 .B M:
 Megabyte
 .TP
 .B G:
 Gigabyte
 .TP
 .B %:
 1/100
 .SS Physical Memory Stats
 .TP
 .B Active:
 number of bytes active
 .TP
 .B Inact:
 number of clean bytes inactive
 .TP
 .B Laundry:
 number of dirty bytes queued for laundering
 .TP
 .B Wired:
 number of bytes wired down, including BIO-level cached file data pages
 .TP
 .B Buf:
 number of bytes used for BIO-level disk caching
 .TP
 .B Free:
 number of bytes free
 .SS ZFS ARC Stats
 These stats are only displayed when the ARC is in use.
 .TP
 .B Total:
 number of wired bytes used for the ZFS ARC
 .TP
 .B MRU:
 number of ARC bytes holding most recently used data
 .TP
 .B MFU:
 number of ARC bytes holding most frequently used data
 .TP
 .B Anon:
 number of ARC bytes holding in flight data
 .TP
 .B Header:
 number of ARC bytes holding headers
 .TP
-.B Other
+.B Other:
 miscellaneous ARC bytes
+.TP
+.B Compressed:
+bytes of memory used by ARC caches
+.TP
+.B Uncompressed:
+bytes of data stored in ARC caches before compression
+.TP
+.B Ratio:
+ratio of uncompressed data to total ARC size
+.TP
+.B Overhead:
+amount of overhead from ARC compression
 .SS Swap Stats
 .TP
 .B Total:
 total available swap usage
 .TP
 .B Free:
 total free swap usage
 .TP
 .B Inuse:
 swap usage
 .TP
 .B In:
 bytes paged in from swap devices (last interval)
 .TP
 .B Out:
 bytes paged out to swap devices (last interval)