Hi,
On 2018-06-22 11:41:45 -0400, Adam Brusselback wrote:
> > Is there some way to make it auto-detect when it should be enabled? If
> not, please document that it should be used on ZFS and any other file
> system with CoW properties on files.
> In addition to this, wondering what type of performance regression this
> would show on something like ext4 (if any).
It's a *massive* regression on ext4 & xfs. You can very trivially
compare the performance of a new cluster (which doesn't have files to
recycle) against one that's running for a while.
Greetings,
Andres Freund
