1NVME-WDC-VS-TEMPE(1)              NVMe Manual             NVME-WDC-VS-TEMPE(1)
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NAME

6       nvme-wdc-vs-temperature-stats - Display temperature-related statistics
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SYNOPSIS

9       nvme wdc vs-temperature-stats <device>
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DESCRIPTION

12       For the NVMe device given, displays temperature statistics.
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14       The <device> parameter is mandatory NVMe character device (ex:
15       /dev/nvme0).
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17       This will only work on WDC devices supporting this feature. Results for
18       any other device are undefined.
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20       Expected status and description :-
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22       ┌───────────────────────────┬──────────────────────────┐
23Statistic                  Description              
24       ├───────────────────────────┼──────────────────────────┤
25       │                           │                          │
26       │The current composite      │ device temperature       │
27       │temperature                │                          │
28       ├───────────────────────────┼──────────────────────────┤
29       │                           │                          │
30       │Warning Composite          │ temp of overheating      │
31       │TEMPerature threshold      │                          │
32       ├───────────────────────────┼──────────────────────────┤
33       │                           │                          │
34       │Critical Composite         │ temp of critical         │
35       │TEMPerature threshold      │ overheating              │
36       ├───────────────────────────┼──────────────────────────┤
37       │                           │                          │
38       │Device Initiated Thermal   │ 0 = unsupported, 1 =     │
39       │Throttling support status  │ supported                │
40       ├───────────────────────────┼──────────────────────────┤
41       │                           │                          │
42       │Host Controlled Thermal    │ 0 = unsupported, 1 =     │
43       │Management support         │ supported                │
44       ├───────────────────────────┼──────────────────────────┤
45       │                           │                          │
46       │Thermal Management         │ temp to start light      │
47       │Temperature 1 (Light       │ throttle                 │
48       │throttle)                  │                          │
49       ├───────────────────────────┼──────────────────────────┤
50       │                           │                          │
51       │Thermal Management         │ # times switched into    │
52       │Temperature 1 Transition   │ light throttle           │
53       │Counter                    │                          │
54       ├───────────────────────────┼──────────────────────────┤
55       │                           │                          │
56       │Thermal Management         │ # seconds spent in light │
57       │Temperature 1 Total Time   │ throttle                 │
58       ├───────────────────────────┼──────────────────────────┤
59       │                           │                          │
60       │Thermal Management         │ temp to start heavy      │
61       │Temperature 2 (Heavy       │ throttle                 │
62       │throttle)                  │                          │
63       ├───────────────────────────┼──────────────────────────┤
64       │                           │                          │
65       │Thermal Management         │ # times switched into    │
66       │Temperature 2 Transition   │ heavy throttle           │
67       │Counter                    │                          │
68       ├───────────────────────────┼──────────────────────────┤
69       │                           │                          │
70       │Thermal Management         │ # seconds spent in heavy │
71       │Temperature 2 Total Time   │ throttle                 │
72       ├───────────────────────────┼──────────────────────────┤
73       │                           │                          │
74       │Thermal Shutdown Threshold │ temp of device shutdown  │
75       └───────────────────────────┴──────────────────────────┘
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77       On success it returns 0, error code otherwise.
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EXAMPLES

80       •   Displays the temperature stats for the device:
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82               # nvme wdc vs-temperature-stats /dev/nvme0
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NVME

85       Part of the nvme-user suite.
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89NVMe                              11/04/2022              NVME-WDC-VS-TEMPE(1)
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