Sure thing. I have been running with
"nvme_core.default_ps_max_latency_us=250" and repo kernel for about 24
hours now without issue. Confirmed with nvme that APST is enabled. I
will switch to "nvme_core.default_ps_max_latency_us=3000" later today or
tomorrow.
$ sudo 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
$ uname -a
Linux TEC-AJC2-U 4.10.0-19-generic #21-Ubuntu SMP Thu Apr 6 17:04:57 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux
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https://bugs.launchpad.net/bugs/1678184
Title:
APST quirk needed for Samsung 512GB NVMe drive
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