3. Accessing Data for Electric Power, Temperature, and Processor Utilization
Express5800/T110f-S, R110f-1E, T110f-E Maintenance Guide
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Chapter 3 Appendix
3.2
Linux
The sample program below is verified to be run on Red Hat Enterprise Linux 5 and Linux 6.
3.2.1
Power consumption
Power consumption is given by executing the following commands via IPMI to BMC.
Network Function Code: 2Ch (Group Extension)
Command Code: 02h (Get Power Reading)
Request Data: 000001DCh
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 0x2c 0x02 0xdc 0x01 0x00 0x00
• Execution result
dc 32 01 00 00 4d 01 7f 00 80 0e 33 4e 70 b2 72 01 40
Power consumption is given by calculating the 2-byte (16 bits) output value.
The second value 0x01 [15:8]
The first value 0x32 [7:0]
In the example above, power consumption = 0x0132 (hexadecimal) = 306 (decimal) 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
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
The output above shows the following in a line in order.
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