On 5/3/2024 11:16 AM, Antony Uspensky wrote:
On Fri, 3 May 2024, Warner Losh wrote:
Ah yes. You need to enable ZFS trim.
Do you mean autotrim property? No, better to run zpool trim manually.
The other trim destroys all the data on that partition.
Not always. It sends TRIM subcommand.
I notice that with trim -f <device>, it makes a very large difference in
performance for certain consumer drives (WD Blue vs Samsung for example)
that had a lot of writes/deletes. On FreeBSD, I am not able to restore
write performance to reasonable levels unless I do a device level trim
of the entire disk with trim -f.
(https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=277992). I am still
trying to figure out why / where this is the case.
---Mike
A.
