On Tuesday 19 May 2015 10:53:26 Rich Freeman wrote: > On Tue, May 19, 2015 at 10:44 AM, Peter Humphrey <pe...@prh.myzen.co.uk> wrote: > > Incidentally, what's the received wisdom on frequency of file-system > > trimming on SSDs these days? I've seen values quoted between twice a day > > and once a week. And how does trimming affect btrfs? > > I've been trimming mine daily, and I've yet to be able to distinguish > it from a no-op. As far as I can tell fstrim -v always outputs 0 > bytes trimmed.
I've just run fstrim manually on my LAN server, which is installed on ext4: # /sbin/fstrim -av /usr/local: 0 B (0 bytes) trimmed /usr/portage/packages: 71.4 MiB (74878976 bytes) trimmed /usr/portage: 389.3 MiB (408174592 bytes) trimmed /var/cache/http-replicator: 0 B (0 bytes) trimmed /var/cache/squid: 41.5 MiB (43532288 bytes) trimmed /home: 123.1 MiB (129081344 bytes) trimmed /: 698.9 MiB (732839936 bytes) trimmed It's supposed to have done that at 01:15 on Saturday, but my KMail system is sick so I can't say what it actually did. Roll on new SSDs! -- Rgds Peter
