This bug was fixed in the package zfs-linux - 0.7.5-1ubuntu6
--------------- zfs-linux (0.7.5-1ubuntu6) bionic; urgency=medium
* Fix ARC hit rate (LP: #1755158) - Upstream fix, commit 0873bb6337452e3e028e40f5dad945b30deab185, fixes issue that can impact ARC hit rate especially with a small ARC
-- Colin Ian King <email address hidden> Mon, 12 Mar 2018 12:40:22 +0000
This bug was fixed in the package zfs-linux - 0.7.5-1ubuntu6
---------------
zfs-linux (0.7.5-1ubuntu6) bionic; urgency=medium
* Fix ARC hit rate (LP: #1755158) e028e40f5dad945 b30deab185,
- Upstream fix, commit 0873bb6337452e3
fixes issue that can impact ARC hit rate especially with a
small ARC
-- Colin Ian King <email address hidden> Mon, 12 Mar 2018 12:40:22 +0000