Hi, we have a DigitalOcean VPS used as a staging environment for our Postgres database. Usually there are around 10-15 copies of the nightly DB dump restored there and used at the same time. ZFS dedup does a great job reducing disk-space requirements by many times. But when there's heavy disk activity, when the dumps are being restored, or old databases get dropped, performance falls on its knees. Responsiveness freezes for as much as 5-20 seconds, both in an SSH session in response to commands, and for DB queries. Are there any zfs knobs regarding dedup performance I can tune? I've tried some of them, none seem to be helping at all. Both dedup+lz4 compression are enabled. Same thing without dedup works fine in terms of interactivity & overall responsiveness. The code is probably not very well worked out & is somewhat buggy with regard to its performance.