tunefs -t enable
should enable TRIM. But please do not trust be blindly. There are more experienced members as SirDice who can tell you how to check if TRIM is enabled and how to enable it correctly.freebsd# gpart show
=> 63 500118129 ada0 MBR (238G)
63 1985 - free - (993K)
2048 234442752 1 freebsd [active] (112G)
234444800 265673392 - free - (127G)
=> 0 234442752 ada0s1 BSD (112G)
0 226492416 1 freebsd-ufs (108G)
226492416 7949166 2 freebsd-swap (3.8G)
234441582 1170 - free - (585K)
freebsd# tunefs -p /dev/ada0s1
tunefs: POSIX.1e ACLs: (-a) disabled
tunefs: NFSv4 ACLs: (-N) disabled
tunefs: MAC multilabel: (-l) disabled
tunefs: soft updates: (-n) enabled
tunefs: soft update journaling: (-j) enabled
tunefs: gjournal: (-J) disabled
tunefs: trim: (-t) disabled
tunefs: maximum blocks per file in a cylinder group: (-e) 4096
tunefs: average file size: (-f) 16384
tunefs: average number of files in a directory: (-s) 64
tunefs: minimum percentage of free space: (-m) 8%
tunefs: space to hold for metadata blocks: (-k) 6408
tunefs: optimization preference: (-o) time
tunefs: volume label: (-L)