Kernel 6.8.8-4-pve and Zfs 2.4.4 here. Updated test results, same setup (the only difference is that we added more RAM, previously was 64 GB, now 480 GB):
Host:
Read: 2912MiB/s (previously 2701MiB/s)
IOPS: 745k (previously 692k)
Container (debian 12): ~66% of the host performance (previously...