Battery management unit based runtime monitoring of power consumption
An information handling system (IHS) includes a battery management unit (BMU) and an embedded controller (EC). The EC is operable for detecting a trigger for monitoring power consumption in light of a first condition, capturing a state of the IHS, writing data representing the state to a power profile log, annotating the log with an identifier of a point at which logging associated with the first condition begins, obtaining, from the BMU, power data representing an amount of current flowing from or charge delivered by a battery, writing at least some power data to the log, detecting a trigger for ending monitoring associated with the first condition, annotating the log with an identifier of a point at which logging associated with the first condition ends, and generating, dependent on the annotations of the identifiers in the log, a power profile report indicating power consumption associated with the first condition.
1. An information handling system, comprising:
a battery;
a battery management unit that controls operation of the battery; and
an embedded controller, comprising:
a processor; and
non-transitory computer readable memory media storing instructions executable by the processor for:
detecting a first trigger for monitoring power consumption in the information handling system in light of a first condition in the information handling system, the first condition including presence of a given component in the information handling system;
capturing a first state of the information handling system;
writing data representing the first state of the information handling system to a power profile log;
annotating the power profile log with a first identifier of a point in the power profile log at which data logging associated with the first condition begins;
obtaining, from the battery management unit, power data sampled by the battery management unit at a first rate based on the first condition, including data representing an amount of current flowing out of the battery or an amount of charge delivered by the battery;
writing at least a portion of the power data to the power profile log;
detecting a second trigger for ending the monitoring of power consumption in the information handling system in light of the first condition;
annotating the power profile log with a second identifier of a point in the power profile log at which data logging associated with the first condition ends;
generating, dependent on the annotations of the first and second identifiers in the power profile log, a first power profile report indicating power consumption associated with the first condition;
detecting a third trigger for monitoring power consumption in the information handling system in light of a second condition in the information handling system, wherein the third trigger is detected prior to detection of the second trigger, the second condition including transitioning the information handling system between a full-power operating mode and a low-power operating mode;
capturing a second state of the information handling system;
writing data representing the second state of the information handling system to the power profile log;
annotating the power profile log with a third identifier of a point in the power profile log at which data logging associated with the second condition begins;
obtaining, from the battery management unit and while obtaining of the power data at the first rate is concurrently in progress, additional power data sampled by the battery management unit at a second rate based on the second condition, the second rate differing from the first rate, including data representing an amount of current flowing out of the battery or an amount of charge delivered by the battery;
writing at least a portion of the additional power data to the power profile log;
detecting a fourth trigger for ending the monitoring of power consumption in the information handling system in light of the second condition;
annotating the power profile log with a fourth identifier of a point in the power profile log at which data logging associated with the second condition ends;
generating, dependent on the annotations of the third and fourth identifiers in the power profile log, a second power profile report indicating power consumption associated with the second condition; and
in response to the first power profile and the second power profile, providing control signals to the battery to control the charging of the battery,
wherein obtaining the power data that is sampled at the first rate and in light of the first condition overlaps in time with obtaining at least a portion of the additional power data that is sampled at the second rate and in light of the second condition.
2. The information handling system of claim 1 , wherein the power data obtained from the battery management unit is received from the battery management unit in real time as it is sampled by the battery management unit.
3. The information handling system of claim 1 , wherein the power data obtained from the battery management unit comprises sampled power data that has been aggregated by the battery management unit.
4. The information handling system of claim 1 , wherein the data representing the first state of the information handling system comprises one more of:
a respective identifier of each of one or more hardware or software components in the information handling system;
a respective identifier of a vendor or supplier of each of one or more hardware or software components in the information handling system;
a respective identifier of a model or version of each of one or more hardware or software components in the information handling system;
data indicating a current status of the battery; and
data indicating a current operating mode of the information handling system.
5. The information handling system of claim 1 , wherein the second trigger comprises:
expiration of a timer;
the first condition no longer being met;
execution of a given program instruction in the information handling system;
execution of a given program instruction in a system that is remote from the information handling system and is communicatively coupled to the information handling system;
removal of a given component from the information handling system;
a change in a configuration of components in the information handling system; or
a change in an operating mode of the information handling system.
6. The information handling system of claim 1 , wherein the instructions are further executable by the processor for, in response to detecting the second trigger:
capturing a second state of the information handling system; and
writing data representing the second state of the information handling system to the power profile log.
7. A method for battery management unit based runtime monitoring of power consumption, comprising:
capturing a first state of the information handling system;
writing data representing the first state of the information handling system to a power profile log;
annotating the power profile log with a first identifier of a point in the power profile log at which data logging associated with the first condition begins;
obtaining, from the battery management unit, power data sampled by the battery management unit at a first rate based on the first condition, including data representing an amount of current flowing out of the battery or an amount of charge delivered by the battery;
writing at least a portion of the power data to the power profile log;
detecting a second trigger for ending the monitoring of power consumption in the information handling system in light of the first condition;
annotating the power profile log with a second identifier of a point in the power profile log at which data logging associated with the first condition ends;
generating, dependent on the annotations of the first and second identifiers in the power profile log, a first power profile report indicating power consumption associated with the first condition;
detecting a third trigger for monitoring power consumption in the information handling system in light of a second condition in the information handling system, wherein the third trigger is detected prior to detection of the second trigger, the second condition including transitioning the information handling system between a full-power operating mode and a low-power operating mode;
capturing a second state of the information handling system;
writing data representing the second state of the information handling system to the power profile log;
annotating the power profile log with a third identifier of a point in the power profile log at which data logging associated with the second condition begins;
obtaining, from the battery management unit and while obtaining of the power data at the first rate is concurrently in progress, additional power data sampled by the battery management unit at a second rate based on the second condition, the second rate differing from the first rate, including data representing an amount of current flowing out of the battery or an amount of charge delivered by the battery;
writing at least a portion of the additional power data to the power profile log;
detecting a fourth trigger for ending the monitoring of power consumption in the information handling system in light of the second condition;
annotating the power profile log with a fourth identifier of a point in the power profile log at which data logging associated with the second condition ends;
generating, dependent on the annotations of the third and fourth identifiers in the power profile log, a second power profile report indicating power consumption associated with the second condition; and
in response to the first power profile and the second power profile, providing control signals to the battery to control the charging of the battery,
wherein obtaining the power data that is sampled at the first rate and in light of the first condition overlaps in time with obtaining at least a portion of the additional power data that is sampled at the second rate and in light of the second condition.
8. The method of claim 7 , wherein obtaining the power data comprises obtaining the power data from the battery management unit in real time as it is sampled by the battery management unit.
9. The method of claim 7 , wherein the power data obtained from the battery management unit comprises sampled power data that has been aggregated by the battery management unit.
10. The method of claim 7 , wherein the second trigger comprises:
expiration of a timer;
the first condition no longer being met;
execution of a given program instruction in the information handling system;
execution of a given program instruction in a system that is remote from the information handling system and is communicatively coupled to the information handling system;
removal of a given component from the information handling system;
a change in a configuration of components in the information handling system; or
a change in an operating mode of the information handling system.
11. Non-transitory computer readable memory media storing instructions executable by a processor for:
capturing a first state of the information handling system;
writing data representing the first state of the information handling system to a power profile log;
annotating the power profile log with a first identifier of a point in the power profile log at which data logging associated with the first condition begins;
obtaining, from the battery management unit, power data sampled by the battery management unit at a first rate based on the first condition, including data representing an amount of current flowing out of the battery or an amount of charge delivered by the battery;
writing at least a portion of the power data to the power profile log;
detecting a second trigger for ending the monitoring of power consumption in the information handling system in light of the first condition;
annotating the power profile log with a second identifier of a point in the power profile log at which data logging associated with the first condition ends;
generating, dependent on the annotations of the first and second identifiers in the power profile log, a first power profile report indicating power consumption associated with the first condition;
detecting a third trigger for monitoring power consumption in the information handling system in light of a second condition in the information handling system, wherein the third trigger is detected prior to detection of the second trigger, the second condition including transitioning the information handling system between a full-power operating mode and a low-power operating mode;
capturing a second state of the information handling system;
writing data representing the second state of the information handling system to the power profile log;
annotating the power profile log with a third identifier of a point in the power profile log at which data logging associated with the second condition begins;
obtaining, from the battery management unit and while obtaining of the power data at the first rate is concurrently in progress, additional power data sampled by the battery management unit at a second rate based on the second condition, the second rate differing from the first rate, including data representing an amount of current flowing out of the battery or an amount of charge delivered by the battery;
writing at least a portion of the additional power data to the power profile log;
detecting a fourth trigger for ending the monitoring of power consumption in the information handling system in light of the second condition;
annotating the power profile log with a fourth identifier of a point in the power profile log at which data logging associated with the second condition ends;
generating, dependent on the annotations of the third and fourth identifiers in the power profile log, a second power profile report indicating power consumption associated with the second condition; and
in response to the first power profile and the second power profile, providing control signals to the battery to control the charging of the battery,
wherein obtaining the power data that is sampled at the first rate and in light of the first condition overlaps in time with obtaining at least a portion of the additional power data that is sampled at the second rate and in light of the second condition.
12. The non-transitory computer readable memory media of claim 11 , wherein the second trigger comprises:
expiration of a timer;
the first condition no longer being met;
execution of a given program instruction in the information handling system;
execution of a given program instruction in a system that is remote from the information handling system and is communicatively coupled to the information handling system;
removal of a given component from the information handling system;
a change in a configuration of components in the information handling system; or
a change in an operating mode of the information handling system.