Trim is not in Illumos kernel yet, however you can get the same performance gain by only using 80-90% of the SSD in a slice and letting the garbage collection clean up overwritten sectors.
Some SSDs do this better than others. Intel and Samsung seem to be the best at garbage collection. AnandTech has some good articles on this. I've gotten great long running performance out of Samsung 840 Pros at 80%. You will also benefit by having a log device for your SSD pools. Even those with power safe caches suffer from the log being in the pool. -Chip On Mon, Jan 12, 2015 at 5:56 PM, <[email protected]> wrote: > Greetings, > > I have the root volume with several I/O intensive zones on an SSD drive. > Updating a file in one of the zones is noticeably going slow in comparison > how it was several months ago, while the file size hasn't changed much. I > suspect the SSD may need trimming. > Is the TRIM not available yet in smartos? > If so, what would be the right procedure of migrating the root volume with > its zones/* onto the different drive? > > Thanks, > Alexei > > > > ------------------------------------------- > smartos-discuss > Archives: https://www.listbox.com/member/archive/184463/=now > RSS Feed: > https://www.listbox.com/member/archive/rss/184463/26131723-5e6842d7 > Modify Your Subscription: > https://www.listbox.com/member/?&; > Powered by Listbox: http://www.listbox.com > ------------------------------------------- smartos-discuss Archives: https://www.listbox.com/member/archive/184463/=now RSS Feed: https://www.listbox.com/member/archive/rss/184463/25769125-55cfbc00 Modify Your Subscription: https://www.listbox.com/member/?member_id=25769125&id_secret=25769125-7688e9fb Powered by Listbox: http://www.listbox.com
