Methods and apparatuses for dynamic power control

An article of manufacture comprising:

• a machine readable-storage medium storing data that, when accessed by a machine, cause the machine to perform operations comprising,
• operating a subsystem at a current performance setting which is one of a plurality of performance settings, the subsystem having a power maximum allocation, the subsystem being capable of operating at each of the performance settings and wherein the current performance setting has a power consumption which is less than the maximum power allocation;
• determining an operational power of the subsystem at the current performance setting by using an actual power consumed by the subsystem that was previously measured at the current performance setting;
• and
• allocating an additional power to one or more other subsystems, wherein the additional power includes a difference between the maximum power allocation for the subsystem and the operational power of the subsystem at the current performance setting.

A data processing system, comprising:

• a memory;
• and
• a processor coupled to the memory, wherein the processor is configured to operate a subsystem at a current performance setting which is one of a plurality of performance settings, the subsystem having a maximum power allocation, the subsystem being capable of operating at each of the performance settings and wherein the current performance setting has a power consumption which is less than the maximum power allocation;
• to determine an operational power of the subsystem at the current performance setting by using an actual power consumed by the subsystem that was previously measured at the current performance settings;
• setting;
• and
• the processor is configured to allocate an additional power that includes a difference between the maximum power allocation for the subsystem and the operational power of the subsystem at the current performance setting to one or more other subsystems.

A machine-accessible storage medium storing data that, when accessed by a machine, cause the machine to perform operations comprising:

• determining an intermediate operational power setting of a subsystem at a current performance setting which is one of a plurality of performance settings, the subsystem having a maximum power allocation, the subsystem being capable of operating at each of the performance settings, wherein the intermediate operational power setting is determined using an actual power consumed by the subsystem that was previously measured at the current performance setting, the current performance setting having power consumption which is less than the maximum power allocation;
• storing the intermediate operational power setting;
• and
• allocating an additional power to another subsystem based on the intermediate operational power setting and the maximum power.

A data processing system, comprising:

• a memory;
• and
• a processor coupled to the memory, wherein the processor is configured to store a value representing an intermediate operational power setting of a subsystem and an maximum value in the memory, wherein the intermediate operational power setting is determined using an actual power consumed by the subsystem that was previously measured at a current performance setting which is one of a plurality of performance settings, the subsystem being capable of operating at each of the performance settings, the current performance setting having power consumption which is less than the maximum value;
• and to allocate an additional power to the system to operate another subsystem based on the value.