Get CPU Reading
更新时间： 2026/08/06
在Gitcode上查看源码Get CPU Reading
Change History
| openUBMC Version | Revision Date | Description |
|---|---|---|
| 25.06 | 2025/06/26 | Initial draft: add command details |
Basic Information
Function Description
This command is used to obtain the CPU reading.
Privilege
N/A
Command Information
Request Information
| Byte | Data Field |
|---|---|
| NetFn | 30h |
| CMD | 92h |
| 1: 3 | Manufacturer ID, LS Byte first. The length is fixed to three bytes. For example, if the vendor ID is 2011 and the corresponding hexadecimal value is 0x0007DB, the first byte is DBh, the second byte is 07h, and the third byte is 00h. |
| 4 | Sub command, sub command = 0Dh |
| 5 | CPU Selector: 0xFF represents reading the highest temperature of all CPUs |
Response Information
| Byte | Data Field |
|---|---|
| 1 | Completion Code |
| 2: 4 | Manufacturer ID, LS Byte first. The length is fixed to three bytes. For example, if the vendor ID is 2011 and the corresponding hexadecimal value is 0x0007DB, the first byte is DBh, the second byte is 07h, and the third byte is 00h. |
| 5 | Core Temp |
| 6 | DTS |
| 7 | Tcontrol |
| 8 | M |
| 9 | N |
| 10 | UpStep |
| 11 | DownStep |
| Note: The meanings of the last four parameters are as follows: When the CPU meets Tcontrol-DTS < M, the fan speed is increased by 5%. If the CPU meets Tcontrol-DTS > N in five detection periods (each detection period is 2 seconds), the fan speed decreases by 2%. |
Command Example
Obtain the CPU reading.
Request:
bash
ipmicmd -k "0f 00 MM NN" smi 0Response:
text
0f MM NN