TWI654564B - Power saving method - Google Patents

Abstract

The present invention proposes a power saving method suitable for a computer system operable in one of a plurality of load modes. The power saving method includes determining a first power supply phase according to a preset value of a plurality of power supply phase switching points corresponding to the plurality of load modes, and supplying power to the processing unit of the computer system to obtain the computer by using the first power supply phase number One of the power consumption data of the system determines whether the power consumption data meets a power saving standard, and selectively adjusts the switching phase of the power supply phase according to whether the power consumption data meets one of the power saving standards.

Description

Power saving method

This case is about a power saving method, especially a power saving method for a computer system.

Generally speaking, computer systems have different operating states. The central processing unit in the computer system has different power requirements as the computer system operates. For example, the computer system will be in an idle (IDLE) state. There is less power required. When the computer system is in full load, the central processor needs more power. Therefore, the computer system includes a power supply control unit for regulating the power supply, and the power supply control unit can provide different voltages for the central processor to operate according to the requirements of the central processor with different power supply phases to meet the actual power requirements of the central processing unit.

However, the power supply adjustment unit included in the same computer system changes the number of power supply phases according to the same conditions, and the user of each computer system uses different conditions for the same computer system, and some users only use the computer system. For the processing of documents that do not consume hardware resources, some users perform software that consumes extremely hard resources. Therefore, changing the number of power supply phases according to the same conditions does not meet the usage conditions of different users, which will result in over-supply or insufficient power supply.

In view of this, the present case proposes a power saving method.

In an embodiment, a power saving method includes determining a first power supply phase according to a preset value of a plurality of power supply phase switching points corresponding to the multiple load modes, and supplying the first power supply phase to the computer system. The processing unit obtains a power consumption data of the computer system, determines whether the power consumption data meets a power saving standard, and generates a determination result, and selectively adjusts a power supply phase switching point corresponding to the plurality of load modes according to the determination result.

In summary, according to one embodiment of the power saving method of the present invention, the switching phase of the power supply phase can be adjusted according to the power consumption data generated when the computer system is actually operating. Therefore, it is possible to adjust the switching point of the power supply phase which is the most suitable for the operation of the computer system according to the different needs of different users, so that the computer system has lower power consumption and more power saving according to the better switching point of the power supply phase. .

1 is a flow chart of an embodiment of a power saving method suitable for a computer system according to the present invention. 2 is a circuit block diagram of a computer system for testing the power saving method of FIG. 1. Referring first to FIG. 2, a computer system 1 includes a phase number control unit 11, a voltage supply unit 13, a processing unit 12, and a determination unit 14. The voltage supply unit 13 is coupled to the phase number control unit 11 and the processing unit 12. The computer system 1 is operable in a plurality of load modes, and the voltage supply unit 13 can supply power to the processing unit 12 in a corresponding phase according to the load mode of the computer system 1. For example, the voltage supply unit 13 can supply power to the processing unit 12 in four phases, or In conjunction with certain load modes, the voltage supply unit 13 can also supply power to the processing unit 12 at a higher number of phases than four or less. The phase number control unit 11 can detect the load information (for example, load current or voltage) of the processing unit 12, and control the voltage supply unit 13 to correspond to the aforementioned load information according to the load information of the processing unit 12 and the power supply phase switching point. The phase number is supplied to the processing unit 12. The switching point of the power supply phase is the basis for the phase number control unit 11 to control the voltage supply unit 13 to change the number of phases supplied to the processing unit 12. That is to say, the power supply phase switching point is the current value or voltage value of the load information when the number of power phases changes. In detail, when the load information of the processing unit 12 is higher or lower than a certain power supply phase switching point, the phase number control unit 11 controls the voltage supply unit 13 to supply power to the processing unit 12 with a different number of phases. For example, the power supply phase switching point may be a current threshold value, and the initial phase number control unit 11 first controls the voltage supply unit 13 to supply power to the processing unit 12 in one phase. When the load current of the processing unit 12 is greater than the current threshold value, The control voltage supply unit 13 supplies power to the processing unit 12 in the number of phases of two phases, three phases or four phases.

Then, when the phase number control unit 11 supplies the processing unit 12 to the processing unit 12 in accordance with the number of phases of the load information in accordance with the power supply phase switching point control voltage supply unit 13, the determination unit 14 acquires the power consumption data of the computer system 1. Next, the judging unit 14 judges whether or not the power consumption data meets the power saving standard, and generates a judgment result R. The phase number control unit 11 selectively adjusts the power supply phase number switching point corresponding to the load mode based on the determination result R. When the power consumption data does not meet the power saving standard (the determination result R is "NO"), the phase number control unit 11 adjusts the power supply phase number switching point corresponding to the load mode. When the power consumption data meets the power saving standard (the determination result R is YES), the phase number control unit 11 does not adjust the power supply phase number switching point corresponding to the load mode. In an embodiment, the processing unit 12 can be a central processing unit (CPU), the computer system 1 can be a server, and the determining unit 14 can be integrated in the processing unit 12 or independent of the processing unit 12. Initially, the computer system 1 can pre-store the preset value of the power phase switching point in a storage unit (not shown in FIG. 2).

In detail, the voltage supply unit 13 is configured to supply the processing unit 12 with four phases at most, and the number of power supply phase switching points is three. Please refer to FIG. 3 , and FIG. 3 illustrates three switching points TH1 , TH2 , TH3 ( For convenience of description, the following are respectively referred to as a phase switching point TH1, a phase switching point TH2, and a phase switching point TH3), and the three switching points respectively divide the load information of the processing unit 12 into four intervals I, II, III. , IV. The phase number switching point TH2 is located between the phase number switching point TH1 and the phase number switching point TH3. When the phase number control unit 11 detects that the load information of the processing unit 12 is less than the phase number switching point TH1, it indicates that the load information of the processing unit 12 is located in the interval I, and the phase number control unit 11 controls the voltage supply unit 13 to supply power to one phase. The processing unit 12 is further provided. When the phase control unit 11 detects that the load information of the processing unit 12 is between the phase switching point TH1 and the phase switching point TH2, the load information indicating the processing unit 12 is located in the interval II. At this time, the phase number control unit 11 controls the voltage supply unit 13 to supply power to the processing unit 12 in two phases; and, when the phase number control unit 11 detects that the load information of the processing unit 12 is located at the phase number switching point TH2 and the phase number switching point TH3 In the meantime, the load information indicating the processing unit 12 is located in the interval III, at which time the phase number control unit 11 controls the voltage supply unit 13 to supply the processing unit 12 with three phases; further, when the phase number control unit 11 detects the processing unit 12 When the load information is greater than the phase number switching point TH3, it indicates that the load information of the processing unit 12 is located in the interval IV, and the phase number control unit 11 controls the voltage supply unit 13 to supply the processing unit 1 with four phases. 2.

In other embodiments, the number of power phase switching points may be one, two or greater than three depending on the number of different phases that the voltage supply unit 13 can provide to the processing unit 12.

In an embodiment, as shown in FIG. 2 , the voltage supply unit 13 includes a signal output pin 131 , and the signal output pin 131 is coupled to the phase control unit 11 . The signal output pin 131 can output a voltage S1 corresponding to the load information of the processing unit 12. For example, when the load information is 100 amps (A), the voltage S1 outputted by the signal output pin 131 is 1 volt (V). The phase number control unit 11 can determine which of the four sections I, II, III, and IV is the load information of the processing unit 12 based on the magnitude of the voltage S1. In the embodiment of the present invention, the three switching points TH1, TH2, TH3 may be represented by current values. Taking three switching points TH1, TH2, and TH3 as 5 A, 20 A, and 50 A respectively, when the load information is 2 A (that is, the voltage S1 is 0.02 volts), the phase number control unit 11 can determine the processing unit. The load information of 12 is located in the interval I; when the load information is 32 A (ie, the voltage S1 is 0.32 volts), the phase number control unit 11 determines that the load information of the processing unit 12 is located in the interval III; the rest is not repeated here. .

Based on the operation of the computer system 1, please refer to FIG. 1 to FIG. 3 together. One embodiment of the power saving method includes the phase number control unit 11 determining a preset value of the plurality of power supply phase switching points corresponding to the plurality of load modes. The number of power supply phases (step S01) (hereinafter referred to as the first power supply phase number for convenience of description), the first power supply phase number may be the one-phase, two-phase, three-phase or four-phase power supply phase number. After the number of power supply phases is determined, the phase number control unit 11 controls the voltage supply unit 13 to supply the processing unit 12 with the first power supply phase number to obtain power consumption data of the computer system 1 (step S02). Then, it is determined whether the power consumption data is It meets the power saving standard (step S03), and the judgment result is generated according to whether the power consumption data meets the power saving standard. When the power consumption data does not meet the power saving standard (the determination result is "No"), the plurality of power supply phase number switching points corresponding to the plurality of load modes are adjusted (step S04), when the power consumption data meets the power saving standard (the judgment result is "Yes"), the plurality of power supply phase number switching points corresponding to the plurality of load modes are not adjusted.

For example, the three switching points TH1, TH2, and TH3 may be represented by current values, and the preset values of the three switching points TH1, TH2, and TH3 may be 5 A, 20 A, and 50 A described above. Therefore, the phase number control unit 11 determines the number of power supply phases according to the load information of the processing unit 12 and the three switching points TH1, TH2, TH3 of 5 A, 20 A, 50 A, respectively, in step S01, and in step S02 The control voltage supply unit 13 supplies power to the processing unit 12 with the determined number of power supply phases, and then determines the power consumption obtained by the three switching points TH1, TH2, TH3 of 5 A, 20 A, and 50 A according to preset values. Whether the data meets the power saving standards. When the power consumption data does not meet the power saving standard (the judgment result is "No"), the power supply phase switching point is further adjusted to have other adjustment values instead of the aforementioned preset values, for example, 5 A, 20 A, 50 A is adjusted to 3 A, 15 A, 58 A, respectively, or only one of the plurality of power phase switching points or both.

After adjusting the power supply phase switching point, it is re-executed by step S01 to determine another power supply phase according to the adjusted power supply phase switching point (hereinafter referred to as the second power supply phase number for convenience of description), so that the number of phases The control unit 11 controls the voltage supply unit 13 to one phase to four phases according to the adjusted second power supply phase number switching point (ie, three switching points TH1, TH2, TH3 of 3 A, 15 A, and 58 A, respectively). The corresponding second number of power phases is supplied to the processing unit 12 to obtain another power consumption data. Then, step S03 is performed again to determine whether the other power consumption data meets the power saving standard. When the other power consumption data does not meet the power saving standard (the determination result is “No”), the power supply phase switching point is adjusted again ( Step S04), and starting again from step S01, until the adjusted power supply phase switching point causes the power consumption data generated by the computer system 1 to meet the power saving standard.

According to the embodiment of the present invention, in step S01, the load information is divided into a plurality of intervals according to a plurality of phase switching points corresponding to the plurality of load modes, and the number of power supply phases corresponding to each interval is defined; Taking the aforementioned switching points TH1, TH2, and TH3 as an example, four sections I, II, III, and IV can be divided according to three switching points TH1, TH2, and TH3, and four sections I, II, III, and IV are defined. Corresponding to the number of power phases of one phase, two phase, three phase and four phases. Then, the computer system 1 performs the test, and the phase control unit 11 detects the load information (for example, load current or voltage) of the processing unit 12 through the signal output pin 131, and judges the load information according to a plurality of preset intervals. The value falls into a first interval of the plurality of intervals to determine the first number of power supply phases corresponding to the first interval. For example, when the load information is equal to 3 A, it is judged that the load information falls into the interval I, and the phase number control unit 11 determines that the number of power supply phases corresponding to the interval I is one phase; when the load information is 17 A, the load information is judged to fall. In the interval II, the phase number control unit 11 determines that the number of power supply phases corresponding to the interval II is two phases, and the rest are similar and will not be described again.

In an embodiment, the power consumption data obtained by the computer system 1 includes various power consumption values generated by each unit of the computer system 1. For example, the computer system 1 may further include a display unit, a heat dissipation unit, a storage unit, and a memory. The power consumption data is the sum of individual power consumption values generated by each unit of the computer system 1.

In one embodiment, as shown in FIG. 1, when the power consumption data obtained by the computer system 1 meets the power saving standard (the determination result is "Yes"), the adjustment of the power supply phase number switching point is stopped. At this time, the computer system 1 stores the adjusted power supply phase number switching point (step S05) and the adjusted hardware and software parameters corresponding to the power supply phase number switching point as a database. For example, the software and hardware information can be the firmware version of the computer system 1, the specifications, models, or suppliers of the interface cards of the computer system 1. When other computer systems need to be set (for convenience of description, the following is called When the power supply phase switching point of the second computer system is used, it can be judged whether the computer system with the same software and hardware parameters has been used to generate a better switching point of the power supply phase, that is, whether the software and hardware information of the second computer system is judged whether Exists in an established database. Therefore, the software and hardware information of the second computer system is compared with each data in the database. When the comparison is successful, it indicates that the power supply phase switching point is generated according to the same software and hardware information. The power supply phase switching point corresponding to the software and hardware information of the second computer system in the database may be taken out, and the second computer system determines the number of power supply phases according to the existing power supply phase switching point and its multiple load modes. (hereinafter referred to as the third power supply phase number), and the third power supply phase is supplied to the second computer system for operation. In this way, it is not necessary to re-execute steps S01 to S04 to save test time. In an embodiment, the second computer system can be a server.

It should be noted that the correspondence between multiple load modes and multiple power supply phase switching points in the embodiment of the present invention is not limited to one-to-one or many-to-one. For example, each load mode may have a different power phase switching point; or multiple load modes may have the same power phase switching point; or one load mode corresponds to one power phase switching point.

According to an embodiment of the present invention, in step S04, when the power supply phase number switching point is adjusted, a specific power phase number switching point may be adjusted according to a specific load mode of the processing unit 12. For example, taking the foregoing three switching points TH1, TH2, and TH3 as an example, the phase switching point TH1, the phase number switching point TH2, and the phase number switching point TH3 can be respectively defined as a light load switching point, a medium load switching point, and Overload switching point. In step S02, the processing unit 12 can be operated in a light load mode, for example, booting the computer system 1 without executing any program, or performing only the read/write operations of the storage unit of the computer system 1, and then acquiring the processing unit. 12 operating power consumption data corresponding to a light load mode (hereinafter referred to as first power consumption data), and determining in step S03 that the first power consumption data does not meet the power saving standard, adjusting the power supply phase number switching point The light load switching point (ie, the phase number switching point TH1), and further testing whether the power consumption data obtained according to the adjusted light load switching point and the processing unit 12 operating in the light load mode meets the power saving standard, Repeat until the adjusted light load switching point causes the power consumption data generated by the computer system 1 to meet the power saving standard. The adjusted computer system 1 can be adapted to users who only perform document processing.

Similarly, for the overload switch point and the medium load switch point, the processing unit 12 can also be operated in the heavy load mode and the medium load mode, for example, by executing the image or graphics processing action of the hardware resource through the processing unit 12, and Determining whether the different power consumption data (hereinafter referred to as the second power consumption data and the third power consumption data) corresponding to the processing unit 12 in the heavy load mode and the medium load mode by the computer system 1 meets the power saving standard; When the second power consumption data does not meet the power saving standard, adjust the heavy load switching point (ie, the phase number switching point TH3) in the switching point of the power supply phase; when the third power consumption data does not meet the power saving standard, adjust the switching of the power supply phase The midpoint switching point (ie, the phase number switching point TH2) is repeated; the repetition is performed until the adjusted two switching points TH2, TH3 cause the power consumption data generated by the computer system 1 to meet the power saving standard.

In other embodiments, the operating mode of the processing unit 12 may be in the light load mode or the medium load mode or the medium load mode and the heavy load mode, and the processing unit 12 may be obtained by the computer system 1 in the medium load mode and/or Overloading or covering the medium-load mode and the heavy-duty mode or the power consumption data corresponding to the medium-load mode and the light-load mode, whether the power-saving data meets the power-saving standard until the adjusted power-phase phase switching point can cause the computer system 1 to generate The power consumption data meets the power saving standard. Based on this, the phase switch points corresponding to different load adjustments can meet the needs of users with different load operations. Moreover, optimization for the light load switching point, the medium load switching point and the heavy load switching point respectively can reduce the time for finding a better switching point of the power supply phase.

According to an embodiment of the present invention, in step S03, when it is determined whether the power consumption data meets the power saving standard, whether the power consumption data meets the power saving standard can be determined by comparing the power consumption data and the power saving standard. For example, the power consumption data and the power saving standard may be one watt (W) of the power consumption value, and the power saving standard may be 200 W. When the power consumption data is greater than 200 W, for example, the power consumption data is 400 W. Indicates that the power consumption data does not meet the power saving standard; when the power consumption data is less than 200 W, for example, the power consumption data is 150 W, indicating that the power consumption data meets the power saving standard.

According to the embodiment of the present invention, when step S04 is executed, the power supply phase switching point can be adjusted according to the load information when the computer system 1 operates in each load mode. Preferably, the load information may be an average load current value or a maximum load current value of the processor operating in each load mode. For example, the processing unit 12 operates in the light load mode, and detects the current value of the load information when the computer system 1 operates in the light load mode, and uses the aforementioned current value as the phase number switching point TH1. For example, when the processing unit 12 operates in the light load mode, the current value of the load information is 2.5 A, and the phase switching point TH1 can be adjusted from the preset value of 5 A to 2.5 A. Similarly, in step S04, the current value of the load information when operating in the medium load mode and the heavy load mode may be used as the phase number switching point TH2 and the phase number switching point TH3, respectively, and will not be described again.

In another embodiment, the operation method of adjusting the switching points TH1, TH2, TH3 in step S04 can be as follows. Please refer to FIG. 4. FIG. 4 illustrates four different load intervals 31, 32, 33, and 34. Different load intervals 31, 32, 33, 34 may represent ranges of load currents in different load modes, for example: first load interval 31 represents the range of load current in sleep mode; second load interval 32 represents load in light load mode The range of current; the third load interval 33 represents the range of load current in the medium load mode; the fourth load interval 34 represents the range of load current in the heavy load mode. The vertical axis in the diagram represents the magnitude of the load current, and the horizontal axis represents the wattage. As can be seen from FIG. 4 , the load current ranges covered by the first load section 31 , the second load section 32 , the third load section 33 , and the fourth load section 34 are sequentially low to high. For example, the first load section 31 may cover 10% load current point 31A to 30% load current point 31B, second load interval 32 may cover 15% load current point 32A to 40% load point 32B, third load interval 33 may cover 35% load current Point 33A to 80% of the load current point 33B, the fourth load interval 34 may cover 40% of the load current point 34A to 90% of the load current point 34B, if the processing unit 12 of the computer system 1 operates in the corresponding first load interval 31. In the load mode of the second load interval 32, the third load interval 33, and the fourth load interval 34, the computer system generates low-to-high power consumption data.

Initially, it is assumed that the preset values of the phase switching points of the computer system 1 are TH1', TH2', TH3', as shown in FIG. In FIG. 4, the setting of the phase change points TH1', TH2' is much lower than the lowest load current points 33A and 34A of the third load section 33 and the fourth load section 34, and the setting of the phase switching point TH3' is much higher than The highest load current points 31B and 32B of the first load section 31 and the second load section 32. Taking the computer system 1 operating in the light load mode as an example, the load current range of the light load mode corresponds to the second load interval 32. Since the preset phase switching points TH1' and TH2' are set too low and the phase switching point TH3' is set too high, the load current in the light load mode mostly falls on the phase switching point TH2' and the number of phases. The switching point TH3' is switched between, causing the phase number control unit 11 to control the voltage supply unit 13 to supply power to the processing unit 12 almost in three phases. Even when a low load current (for example, slightly larger than the phase number switching point TH2'), the control voltage supply unit 13 may supply power in three phases. As a result, the power consumption of the light load mode cannot meet the power saving standard. Therefore, the phase switching point of the computer system 1 can be optimally adjusted by the power saving method of the present invention to achieve power saving. Please refer to FIG. 5. FIG. 5 illustrates the adjusted phase number switching points TH1, TH2, and TH3 in the embodiment of the present invention. In the embodiment of the present invention, the phase number switching point TH3 can be obtained by L _32A +f ₁ *(L _33B -L _34A ), wherein L _32A , L _33B and L _34A represent the load current points 32A, 33B, 34A, respectively. Corresponding current value, f ₁ is a constant less than 1 and f ₁ can be 0.5; further, the phase switching point TH2 can be obtained by: L _32A +f ₂ *(L _32B -L _33A ), where L _32B And L _33A indicate the current value corresponding to the load current points 32B and 33A, respectively, f ₂ is a constant less than 1 and f ₂ may be 0.3; further, the phase switching point TH1 may be: L _32A +f ₃ *( L _{31B -} L _32A ) is obtained, wherein L _31B and L _32A represent the current values corresponding to the load current points 31B and 32A, respectively, f ₃ is a constant less than 1 and f ₃ can be 0.1. Of the constant f _1, f _2, f ₃ can be designed according to different hardware and software configuration of the computer, for example, when the computer system is equipped with more number of processor cores, such as core number of processors 4 may be The design constants f ₁ and f ₂ are lower values, for example, the constant f ₁ may be 0.3, and the constant f ₂ may be 0.2. It should be noted that the calculation formula of the phase switching point can be modified according to actual needs, and is not limited to the above embodiment.

As shown in FIG. 5, the phase number switching point TH3 is located in the overlap region between the third load interval 33 and the fourth load interval 34, and the phase switching point TH2 is located between the second load interval 32 and the third load interval 33. The zone, the phase number switching point TH1 is located in an overlap region between the first load zone 31 and the second load zone 32. In this way, the phase switching points TH1, TH2, and TH3 can evenly divide the load ranges, so that the power consumption of each load mode is optimized, thereby achieving the purpose of power saving. Taking the light load mode as an example, the second load interval 32 corresponding to the light load mode is equally divided by the phase number switching points TH1, TH2, and TH3. Therefore, the phase number control unit 11 controls the voltage supply unit 13 to gradually supply power to the processing unit 12 in one phase, two phases, and three phases in accordance with the magnitude of the load current, thereby avoiding a case where the low load current is supplied with a high phase number. In this way, the power consumption of the light load mode can be optimized to meet the power saving standard.

6 and FIG. 7 are respectively strips of the performance to power ratio corresponding to the computer system 1 operating under different loads according to the unregulated power supply phase switching point and the adjusted power phase switching point operation point. schematic diagram. It can be seen from FIG. 6 and FIG. 7 that in any load, the performance-to-power ratio (hereinafter referred to as the first ratio) obtained by the computer system 1 according to the unregulated power supply phase switching point operation is lower than that according to the adjusted power supply phase. The performance versus power obtained by the number of switching points (hereinafter referred to as the second ratio); for example, in the case of full load (100% of the vertical axis), the first ratio is approximately 1600, and the second ratio is approximately 5500 and greater than The first ratio; in the case of light loads (10% of the vertical axis), the first ratio is about 300, and the second ratio is about 1700 and greater than the first ratio. Therefore, when the same power source is supplied to the computer system, the computer system operating according to the adjusted power phase switching point can process more commands, that is, the computer system operating according to the adjusted power phase switching point is more power-saving.

In summary, according to one embodiment of the power saving method of the present invention, the switching phase of the power supply phase can be adjusted according to the power consumption data generated when the computer system is actually operating. Therefore, it is possible to adjust the switching point of the power supply phase which is the most suitable for the operation of the computer system according to the different needs of different users, so that the computer system has lower power consumption and more power saving according to the better switching point of the power supply phase. .

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Any person having ordinary knowledge in the technical field can make some changes and refinements without departing from the spirit and scope of the present case. This is subject to the definition of the scope of the patent application.

1 Computer system 11 Phase number control unit 12 Processing unit 13 Voltage supply unit 131 Signal output pin 14 Judging unit S1 Voltage R Judgment result TH1 Phase number switching point TH2 Phase number switching point TH3 Phase number switching point TH1' Phase number switching point TH2 'Phase switching point TH3' Phase switching point 31 First load interval 31A Load current point 31B Load current point 32 Second load interval 32A Load current point 32B Load current point 33 Third load interval 33A Load current point 33B Load current point 34 Fourth load interval 34A Load current point 34B Load current point I, II, III, IV Section S01-S05 Step

[Fig. 1] A flow chart showing an embodiment of a power saving method suitable for a computer system according to the present invention. [Fig. 2] A circuit block diagram of a computer system for testing the power saving method of Fig. 1. [Fig. 3] A schematic diagram of an embodiment of a switching point of a power supply phase. [Fig. 4] is a schematic diagram of different load intervals of a computer system and phase switching points TH1, TH2, and TH3 before adjustment. [Fig. 5] is a schematic diagram of the adjusted phase number switching points TH1, TH2, TH3. [Fig. 6] is a long-term diagram of the performance-to-power ratio of a computer system under different loads according to the operation point of the unregulated power supply phase switching point. [Fig. 7] is a long-term diagram of the performance-to-power ratio of a computer system under different loads according to the adjusted switching phase of the power supply phase.

Claims (9)

A power saving method is suitable for a computer system, the computer system is operable in a plurality of load modes, and the power saving method comprises: determining a first one according to a preset value of a plurality of power supply phase switching points corresponding to the load modes a first power supply phase; supplying the first power supply phase to a processing unit of the computer system to obtain power consumption data of the computer system; determining whether the power consumption data meets a power saving standard, and generating a judgment If the power consumption data does not meet the power saving standard, adjust the values of the power supply phase switching points corresponding to the load modes; and perform the foregoing steps by using the adjusted power phase switching points until the Another power consumption data of the computer system complies with the power saving standard. The power saving method of claim 1, further comprising determining a second number of power supply phases according to the adjusted switching points of the power supply phases, and supplying power to the processing unit by using the second power supply phase number. The power saving method of claim 1, wherein the determining the first number of power supply phases according to the preset values of the power supply phase switching points corresponding to the load modes comprises: corresponding to the load modes a preset value of the power supply phase switching point, the size of the load information of the processing unit is divided into a plurality of intervals; and the plurality of power supply phases corresponding to the intervals are defined, wherein the power supply phases include the first Number of power phases; Detecting a value of the load information and determining the value of the load information falls into a first interval of the intervals to obtain the first number of power supply phases corresponding to the first interval. The power saving method of claim 1, wherein the obtained power consumption data comprises: when the processing unit operates in one of the load modes, the power consumption data is corresponding to the light load mode. And a first power consumption data; and when the processing unit operates in one of the load modes, the power consumption data is a second power consumption data corresponding to one of the heavy load modes. The power saving method of claim 4, wherein the step of obtaining the power consumption data further comprises: when the processing unit operates in one of the light load mode and the overload mode, the obtained The power consumption data corresponds to one of the third power consumption data of the medium load mode. The power saving method of claim 5, wherein the step of adjusting the values of the power supply phase switching points corresponding to the load modes comprises: when the determining result indicates that the first power consumption data does not meet the power saving standard Adjusting the values of the power supply phase switching points of the light load mode; when the determination result indicates that the second power consumption data does not meet the power saving standard, adjusting the values of the power supply phase switching points of the heavy load mode And when the judgment result indicates that the third power consumption data does not meet the power saving standard, adjust the values of the power supply phase switching points of the medium load mode. The power saving method of claim 1, further comprising: when the power consumption data meets the power saving standard, storing the adjusted power phase switching points and the plurality of hardware and software parameters of the computer system, The soft and hard parameters correspond to the adjusted switching points of the power supply phases. The power saving method as claimed in claim 7 further includes: Determining whether the plurality of hardware and software parameters to be tested of the other computer system are the same as the hardware and software parameters; when the parameters of the to-be-tested hardware and software are the same as the hardware and software parameters, according to the adjusted power supplies The phase switching point and the plurality of load modes of the other computer system determine a third power phase; and the third power phase supplies power to the other computer system. The power saving method of claim 1, wherein the step of adjusting the values of the power supply phase switching points corresponding to the load modes comprises: detecting the computer system when the power consumption data does not meet the power saving standard And operating a load information in each of the load modes; and adjusting the values of the power supply phase switching points according to the load information.