On Fri, Jul 26, 2013 at 9:50 PM, Dave Chinner <david@xxxxxxxxxxxxx> wrote: > IOWs, the behaviour of fstrim on XFS is entirely dependent on the > speed of the block layer and hardware implementations of discards. And on a lot of SSDs, trim seems to act like a cache flush so it can hit performance hard. It should be scheduled for off-peak times afaik. It's not critical to run hourly or even daily. If you can schedule it once a week when other i/o is light that should be enough for most workloads. Greg -- Greg Freemyer _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
