Hello people. I got a PowerEdge T320 with 2 Raids on it.
One mirror 2x2TB
One Raidz 2 x 4TB.
I've noticed that when I write something on ZFS I can't get more than 85mb/s and the iowait is 10-20-30% and CPU load 1+.
When I write something on the mdadm raid I get 110-120-130MB/s. No load or iowait.
There is no sata cabled or defective mobo as a few suggests. Everything is on Dell's backplane.
I've switched places though. The same.
E5-2403 0 @ 1.80GHz
36GB RAM
Disks are Red NAS WD. No EFAX. Disks are all EFRX (CMR).
I got data in there, if not I could re-format the 3x4TB to xfs/mdadm for testing.
But any suggestions before I reach this are welcome.
Also tried rsync --progress between RAIDs and on network. Same result. It's not network issue.
Anything to mdadm/xfs I am getting 120MB+/s
Anything to zfs is ~85 MB/s max. Sometimes is getting worst, playing around 40-50-60-80 but never more than 85-86MB/s.
pve kernel. 5.4.78-2-pve
Am I missing something here ?
root@vault:~# zpool get all
NAME PROPERTY VALUE SOURCE
vault size 10.9T -
vault capacity 33% -
vault altroot - default
vault health ONLINE -
vault guid 2601074807953605617 -
vault version - default
vault bootfs - default
vault delegation on default
vault autoreplace off default
vault cachefile - default
vault failmode wait default
vault listsnapshots off default
vault autoexpand off default
vault dedupditto 0 default
vault dedupratio 1.00x -
vault free 7.22T -
vault allocated 3.69T -
vault readonly off -
vault ashift 0 default
vault comment - default
vault expandsize - -
vault freeing 0 -
vault fragmentation 0% -
vault leaked 0 -
vault multihost off default
vault checkpoint - -
vault load_guid 2237394498164054881 -
vault autotrim off default
vault feature@async_destroy enabled local
vault feature@empty_bpobj enabled local
vault feature@lz4_compress active local
vault feature@multi_vdev_crash_dump enabled local
vault feature@spacemap_histogram active local
vault feature@enabled_txg active local
vault feature@hole_birth active local
vault feature@extensible_dataset active local
vault feature@embedded_data active local
vault feature@bookmarks enabled local
vault feature@filesystem_limits enabled local
vault feature@large_blocks enabled local
vault feature@large_dnode enabled local
vault feature@sha512 enabled local
vault feature@skein enabled local
vault feature@edonr enabled local
vault feature@userobj_accounting active local
vault feature@encryption enabled local
vault feature@project_quota active local
vault feature@device_removal enabled local
vault feature@obsolete_counts enabled local
vault feature@zpool_checkpoint enabled local
vault feature@spacemap_v2 active local
vault feature@allocation_classes enabled local
vault feature@resilver_defer enabled local
vault feature@bookmark_v2 enabled local