Looking into this further, I think it might just be an issue with power states:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1705748
https://bugzilla.kernel.org/show_bug.cgi?id=195039
https://docs.microsoft.com/en-us/wi...-management-for-storage-hardware-devices-nvme
On the WD SN850 I have:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1705748
https://bugzilla.kernel.org/show_bug.cgi?id=195039
https://docs.microsoft.com/en-us/wi...-management-for-storage-hardware-devices-nvme
On the WD SN850 I have:
Code:
ps 0 : mp:9.00W operational enlat:0 exlat:0 rrt:0 rrl:0
rwt:0 rwl:0 idle_power:0.6300W active_power:9.00W
ps 1 : mp:4.10W operational enlat:0 exlat:0 rrt:0 rrl:0
rwt:0 rwl:0 idle_power:0.6300W active_power:4.10W
ps 2 : mp:3.50W operational enlat:0 exlat:0 rrt:0 rrl:0
rwt:0 rwl:0 idle_power:0.6300W active_power:3.50W
ps 3 : mp:0.0250W non-operational enlat:5000 exlat:10000 rrt:3 rrl:3
rwt:3 rwl:3 idle_power:0.0250W active_power:-
ps 4 : mp:0.0050W non-operational enlat:5000 exlat:45000 rrt:4 rrl:4
rwt:4 rwl:4 idle_power:0.0050W active_power:-
Code:
nvme get-feature -f 0x0c -H /dev/nvme0
get-feature:0xc (Autonomous Power State Transition), Current value:0x000001
Autonomous Power State Transition Enable (APSTE): Enabled
Auto PST Entries .................
Entry[ 0]
.................
Idle Time Prior to Transition (ITPT): 750 ms
Idle Transition Power State (ITPS): 3
.................
Entry[ 1]
.................
Idle Time Prior to Transition (ITPT): 750 ms
Idle Transition Power State (ITPS): 3
.................
Entry[ 2]
.................
Idle Time Prior to Transition (ITPT): 750 ms
Idle Transition Power State (ITPS): 3
.................
Entry[ 3]
.................
Idle Time Prior to Transition (ITPT): 2500 ms
Idle Transition Power State (ITPS): 4
.................
Last edited: