System and method for using input power line telemetry in an information handling system
An information handling system includes a power supply and a baseboard management controller (BMC). The power supply includes an input power monitor module and a communication interface. The input power monitor module is configured to detect a total harmonic distortion (THD) on a power input to the power supply, to determine that the THD is greater than a THD threshold, and to provide an indication that the THD is greater than the THD threshold on the communication interface. The BMC is coupled to the communication interface, and is configured to receive the first indication and to enter an item into a log of the information handling system in response to receiving the indication.
1. An information handling system, comprising:
a power supply including an input power monitor module and a communication interface, wherein the input power monitor module is configured to detect a total harmonic distortion (THD) on a power input to the power supply, to determine that the THD is greater than a first THD threshold, and to provide a first indication that the THD is greater than the first THD threshold on the communication interface; and
a baseboard management controller (BMC) coupled to the communication interface, the BMC configured to receive the first indication and to enter a first item into a log of the information handling system in response to receiving the first indication;
wherein the input power monitor module is further configured to determine that the THD is greater than a second THD threshold, and to provide a second indication that the THD is greater than the second THD threshold on the communication interface, the second THD threshold being greater than the first THD threshold; and
wherein the BMC is further configured to receive the second indication, and to reduce a power consumption level of the information handling system in response to receiving the second indication.
2. The information handling system of claim 1 , wherein in reducing the power consumption level, the BMC is further configured to throttle a device of the information handling system.
3. The information handling system of claim 1 , wherein in reducing the power consumption level, the BMC is further configured to disable a device of the information handling system.
4. The information handling system of claim 1 , further comprising:
a persistent memory device;
wherein the input power monitor module is further configured to determine that the THD is greater than a third THD threshold, and to provide a third indication that the THD is greater than the third THD threshold on the communication interface, the third THD threshold being greater than the second THD threshold; and
wherein the BMC is further configured to receive the third indication, and to initiate a save operation on the persistent memory device in response to receiving the third indication.
5. The information handling system of claim 1 , wherein:
the input power monitor module is further configured to detect a voltage on a bulk capacitor of the power supply, determine that the voltage is less than a first voltage threshold, and to provide a third indication that the voltage is less than the first voltage threshold on the communication interface; and
the BMC is further configured to receive the third indication, and to enter a second item into the log in response to receiving the third indication.
6. The information handling system of claim 5 , wherein:
the input power monitor module is further configured to determine that the voltage is less than a second voltage threshold, and to provide a fourth indication that the voltage is less than the second voltage threshold on the communication interface, the second voltage threshold being less than the first voltage threshold; and
the BMC is further configured to receive the fourth indication, and to reduce a power consumption level of the information handling system in response to receiving the fourth indication.
7. The information handling system of claim 6 , wherein in reducing the power consumption level, the BMC is further configured to throttle a device of the information handling system.
8. The information handling system of claim 6 , wherein in reducing the power consumption level, the BMC is further configured to disable a device of the information handling system.
9. The information handling system of claim 5 , further comprising:
a persistent memory device;
wherein the input power monitor module is further configured to determine that the voltage is less than a third voltage threshold, and to provide a fourth indication that the voltage is less than the third voltage threshold on the communication interface, the third voltage threshold being less than the second voltage threshold; and
wherein the BMC is further configured to receive the fourth indication, and to initiate a save operation on the persistent memory device in response to receiving the fourth indication.
10. A method, comprising:
detecting, by an input power monitor module of a power supply of an information handling system, a total harmonic distortion (THD) on a power input to the power supply;
determining, by the input power monitor module, that the THD is greater than a first THD threshold;
providing, via a communication interface of the input power monitor module, a first indication that the THD is greater than the first THD threshold;
receiving, by a baseboard management controller (BMC) of the information handling system coupled to the communication interface, the first indication;
entering, by the BMC, a first item into a log of the information handling system in response to receiving the first indication;
determining, by the input power monitor module, that the THD is greater than a second THD threshold, the second THD threshold being greater than the first THD threshold;
providing, via the communication interface, a second indication that the THD is greater than the second THD threshold;
receiving, by the BMC, the second indication; and
reducing, by the BMC, a power consumption level of the information handling system in response to receiving the second indication.
11. The method of claim 10 , wherein in reducing the power consumption level, the method further comprises at least one of:
throttling, by the BMC, a device of the information handling system; and
disabling, by the BMC, the device.
12. The method of claim 10 , further comprising:
determining, by the input power monitor module, that the THD is greater than a third THD threshold, the third THD threshold being greater than the second THD threshold;
providing, via the communication interface, a third indication that the THD is greater than the third THD threshold;
receiving, by the BMC, the third indication; and
initiating, by the BMC, a save operation on a persistent memory device of the information handling system in response to receiving the third indication.
13. The method of claim 10 , further comprising:
detecting, by the input power monitor module, a voltage on a bulk capacitor of the power supply;
determining, by the input power monitor module, that the voltage is less than a first voltage threshold;
providing, via the communication interface, a third indication that the voltage is less than the first voltage threshold;
receiving, by the BMC, the third indication; and
entering, by the BMC, a second item into the log in response to receiving the third indication.
14. The method of claim 13 , wherein:
determining, by the input power monitor module, that the voltage is less than a second voltage threshold, the second voltage threshold being less than the first voltage threshold;
providing, by the input power monitor module, a fourth indication that the voltage is less than the second voltage threshold on the communication interface, receiving, by the BMC, the fourth indication; and
reducing, by the BMC, a power consumption level of the information handling system in response to receiving the fourth indication.
15. The method of claim 14 , wherein in reducing the power consumption level, the method further comprises at least one of:
throttling, by the BMC, a device of the information handling system; and
disabling, by the BMC, the device.
16. The method of claim 13 , further comprising:
determining, by the input power monitor module, that the voltage is less than a third voltage threshold, the third voltage threshold being less than the second voltage threshold;
providing, via the communication interface, a fourth indication that the voltage is less than the third voltage threshold;
receiving, by the BMC, the fourth indication; and
initiating, by the BMC, a save operation on a persistent memory device of the information handling system in response to receiving the fourth indication.