3. Accessing Data for Electric Power, Temperature, and Processor Utilization
Express5800/R120e-1M, R120e-2M Maintenance Guide
153
Chapter 3 Appendix
3.2
Linux
The sample program below is verified to be run on Red Hat Enterprise Linux 5.
3.2.1
Power consumption
Power consumption is given by executing the following commands via IPMI to BMC.
Network Function Code: 3Eh (Controller-specific OEM)
Command Code: 0Bh (Get Current Sensor Data)
The example below uses the open-source software OpenIPMI driver and IPMITool. For Red Hat Enterprise
Linux 5, OpenIPMI is provided as an inbox driver. IPMITool is provided in: OpenIPMI-tools-[version].rpm
•
Execution
example
# ipmitool raw 0x3e 0x0b
•
Execution
result
4C 00
Power consumption is given by calculating the 2-byte (16 bits) output value.
The second value 0x00 [15:8]
The first value 0x4C [7:0]
In the example above, power consumption = 0x004C (16 bits) = 76 (10 bits) watts.
Tips
Power consumption readings may not be acquired depending on the power supply
configuration of the server.
In such cases, either of the following messages is displayed.
Unable to send RAW command (channel=0x0 netfn=0x3e lun=0x0 cmd=0xb rsp=0xc1): Invalid Command
or
Unable to send RAW command (channel=0x0 netfn=0x3e lun=0x0 cmd=0xb rsp=0xcb): Requested sensor, data, or record not found
3.2.2
Intake air temperature
Intake air temperature is given by executing
IPMI
commands to BMC.
The example below uses Open IPMI driver and IPMITool that are open source software. For Red Hat Enterprise
Linux 5, OpenIPMI driver is contained in Inbox driver. IPMITool is contained in: OpenIPMI-tools-[version].rpm
•
Execution
example
# ipmitool sdr type Temperature
•
Execution
result
Baseboard Temp4 | 31h | ok | 45 degrees C
Fnt Pnl Temp | 35h | ok | 27 degrees C
CPU1_DIMM1 Temp | 40h | ok | 48 degrees C
CPU1_DIMM2 Temp | 41h | ok | 46 degrees C
CPU1_DIMM3 Temp | 42h | ok | 49 degrees C
CPU1_DIMM4 Temp | 43h | ns | No Reading
CPU1_DIMM5 Temp | 44h | ns | No Reading
CPU1_DIMM6 Temp | 45h | ns | No Reading
P1 Therm Ctrl % | A0h | ok | 0 unspecified
