JP2013143120A - Computer system and method for power management - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that a computer system shares supply power from a plurality of distribution panels among a plurality of housings cannot dynamically adjust an upper limit of power consumption among the housings within a range of not exceeding a rated power capacity of the distribution panels and cannot make the best use of the supply power from the distribution panels.SOLUTION: A housing includes: a power supply module capable of setting a power upper limit; a power table in which the power upper limit, power specification information and power consumption information of the housing, and equipment specification information and power supply information of the distribution panel are recorded; power connection information in which a connection state between the distribution panel and the power supply module is recorded; and a management module. The management module dynamically controls the power upper limit value of the power supply module on the basis of the power table and the power supply connection information.

Description

  The present invention relates to power management of a computer system having a plurality of cases and a plurality of switchboards.

  The computer system uses a blade-type server that can mount multiple servers in a single chassis, improving the degree of physical server consolidation per chassis or rack. It is possible to make it.

  In a blade server, the power supply module installed in the chassis is shared by multiple servers installed in the chassis. However, when the computer system is operating, the usage is not uniform for each server. Utilizing the fact that the power consumption is different, a mechanism that can variably control the upper limit of power consumption for each server is put in, and the power that can be supplied from the power supply module mounted on the chassis is used efficiently Power management is performed.

  There exists patent document 1 as a background of this technical field. In this publication, the unit that can variably set the upper limit value of power consumption is a device, the group of devices sharing the power supply is a device group, and the variable group is defined to limit the net power consumption of the device group. Enforce power limits, allowing variable device power limits implemented on each device to be adjusted separately to satisfy current group power limits, which are dynamically selected according to a power management method. In this method, the device power limit of a low-use device is selectively reduced and the device power limit of a high-use device is increased. "

  However, in the computer system equipment design, in order to minimize the power distribution cost, considering the maximum power consumption and the redundancy of the power supply system when the maximum number of servers is installed in one chassis, 1 In order to share the power that can be supplied from one switchboard with multiple chassis, or to supply power from multiple switchboards to one chassis, minimizing the power limit, including when the power supply system fails, In order to make maximum use of the power that can be supplied from the switchboard, it is necessary to perform equipment design and power management considering that there are multiple switchboards that supply power to the computer system, including redundant systems. The power management method of Document 1 is not sufficient.

JP 2009-116862 A

  In a computer system that shares power supplied from multiple switchboards among multiple chassis, the upper limit of power consumption cannot be dynamically adjusted between multiple chassis within a range that does not exceed the rated power capacity of the switchboard The power supplied from the switchboard cannot be used to the maximum. In addition, when the power supply system fails, the upper limit value of power consumption cannot be adjusted dynamically among multiple chassis within the range that does not exceed the rated power capacity of the switchboard, so the power supplied from the switchboard cannot be used to the maximum extent possible. Is a point.

  In order to solve the above-described problems, a computer system and a power management method according to the present invention include a plurality of casings and a plurality of switchboards, and the switchboard supplies power to the casings. The body includes a plurality of computer modules, a plurality of power supply modules, and a management module, the plurality of cases are connected by a bus, the switchboard is connected to the power supply module, and the management module includes the management module A power connection information for managing the correspondence between the switchboard and the power supply module for each case; a power table for managing the power consumption of the computer module and the output power of the power supply module for each case; When the output power of a certain power supply module belonging to the body reaches the upper limit output power set for the certain power supply module, the management module Lower power consumption of the computer modules belonging to the certain housing by force control, wherein the lower the output power of the certain power module.

  In addition, when the power state of the certain case is changed by the first power control, the management module of the certain case updates information on the certain case in the power table, and updates the information in the power table. , And transmitted to another casing via the bus.

  According to the present invention, the management modules installed in each housing share the power table that records the power connection information and the power consumption information of each housing, and set the upper limit value of the power output amount of the power module. Because it is dynamically controlled, the frequency with which the power consumption of each chassis reaches the upper limit of the power output amount of the power supply module and the power is limited is minimized, and the decrease in server processing capacity due to power limitation is minimized. Can be suppressed.

It is an example of the block diagram of the computer system of one Embodiment of this invention. It is an example of an internal block diagram of a management module. It is an example of power supply connection information. It is an example of an electric power table. It is an example of a power table immediately after the occurrence of a power failure. It is an example of the electric power table after change of an electric power mode value. It is an example of the power table after resetting a power mode value. It is an example of the electric power table after the setting value of electric power upper limit is changed. It is an example of the flowchart explaining the process of an electric power upper limit control program. It is an example of the flowchart explaining the process which determines an electric power mode value. It is an example of the flowchart explaining the process which determines an electric power upper limit.

  In a computer system that shares power supplied from multiple switchboards in multiple chassis, each chassis has the purpose of maximizing the power supplied from the switchboard within the range that does not exceed the rated power capacity of the switchboard. This is realized by sharing the power connection information and the power table between the installed management modules and dynamically controlling the power upper limit value of the power module from the management module.

  Embodiments will be described below with reference to the drawings.

  FIG. 1 is a configuration diagram of a computer system according to an embodiment of the present invention. Three casings 100a to 100c, four switchboards 200a to 200d, four casings 100 include power supply modules 110a to 110d, In this example, one management module 120, three server blades 140a to 140c, and one other module 160 are included. The power supply modules 110a to 110d are connected to any of the switchboards 200a to 200d, and supply power from the switchboards 200a to 200d to the casings 100a to 100c. There are breakers 210a to 210d between the power supply modules 110a to 110d and the switchboards 200a to 200d, and an overcurrent is prevented so that the power supplied from the switchboards 200a to 200d does not exceed the rated power capacity of the switchboards 200a to 200d. Each of the power supply modules 110a to 110d has a power monitor 112 that monitors a power upper limit value 111 and a power output value that can be set from the management module 120, and the value of the power monitor 112 indicates the power upper limit value 111. If the power output amount exceeds the power upper limit value 111, the power is limited so that the management module 120 is notified that the power output amount is in the power limit state.

  FIG. 2 shows an example of an internal configuration diagram of the management module 120.

  The management module 120 includes a CPU 125, a power table 121, power connection information 122, a memory 124 that records a power upper limit control program 123, a communication control unit 126, and a user interface 127. The management modules 120 of the casings 100a to 100c are connected to each other via the external network 130 via the external communication bus 154, and communicate and share the power table 121 and the power connection information 122 with each other. The power table 121 holds power specification information and power consumption information of the power supply modules 110a to 110d, the management module 120, the server blades 140a to 140c, and the other modules 160 in the casings 100a to 100c. The power table 121 holds facility specification information and supply power information of the switchboards 200a to 200d. The power connection information 122 holds the connection state between the power modules 110a to 110d mounted on the casings 100a to 100c and the switchboards 200a to 200d.

  The CPU 125 executes power control according to the power upper limit control program 123 recorded in the memory 124. The CPU 125 detects whether the power output amount of the power supply modules 110a to 110d is in the power limit state by executing the power upper limit control program 123, and is connected to each of the switchboards 200a to 200d from the power table 121 and the power supply connection information 122. The total power output amount of the power supply modules 110a to 110d is calculated, and the set value of the power upper limit value 111 of the power supply modules 110a to 110d is dynamically changed so as not to exceed the rated power capacity of each of the distribution boards 200a to 200d To do.

  The communication control unit 126 sets the power upper limit value 111 of each power supply module 110 a to 110 d through the internal management bus 151 in accordance with an instruction from the CPU 125 that executes the power upper limit control program 123. Further, the communication control unit 126 follows the instruction from the CPU 125 that executes the power upper limit control program 123, and the current power output of each power supply module 110a to 110d from the power monitor 112 of each power supply module 110a to 110d through the internal management bus 152. The competence is acquired and the power table 121 recorded in the memory 124 is updated. Further, the communication control unit 126 controls the power saving control unit 141 of each of the server blades 140a to 140c through the internal management bus 153 in accordance with an instruction from the CPU 125 that executes the power upper limit control program 123. Further, the communication control unit 126 mutually communicates with the management modules 120 of other cases connected by the external network 130 via the external communication bus 154 in accordance with an instruction from the CPU 125 that executes the power upper limit control program 123. Through communication, the power table 121 and the power connection information 122 recorded in the memory 124 are updated.

  The user interface 127 outputs the items of the power table 121 and the power connection information 122 input from the user to the memory 124. Examples of the user interface 127 include KVM (Keyboard / Video / Mouse) and console connection.

  In the embodiment of FIG. 1, the management module has a single configuration, but a configuration in which a plurality of management modules are mounted in the casings 100a to 100c may be used. In a configuration having a plurality of management modules, the management module is divided into a main management module and a standby management module. The main management module performs the operations described above. The standby management module performs continuous operation instead of the main management module when the main management module becomes unable to continue operation due to an abnormality, occurrence of a failure, maintenance, or the like. When there are a plurality of management modules, all the internal management buses 151, 152, 153 are provided for the number of management modules. A management bus is also added between the management module of the main system and the standby system. With this bus, the communication control unit 126 in one management module can acquire information from the communication control unit 126 of another management module.

  In the embodiment of FIG. 1, the internal management buses 151, 152, and 153 are independent buses. However, the internal management buses 151, 152, and 15 are not limited to the embodiment, and may be a single common bus. The internal management buses 151, 152, and 153 may be further divided.

  FIG. 3 is an example of the power connection information 122.

  The power connection information 122 is a matrix table showing the connection state between the power modules 110a to 110d mounted on the casings 100a to 100c and the switchboards 200a to 200d. For example, the power connection information 122 corresponding to the configuration diagram of FIG. 1 is as shown in FIG. In the configuration diagram of FIG. 1, since the power supply modules 110a and 110b of the housing 100a are connected to the switchboard 200a, the columns where the power supply modules 110a and 110b of the housing 100a and the switchboard 200a cross in FIG. In the configuration diagram of FIG. 1, since the power supply modules 110c and 110d of the housing 100a and the switchboard 200a are not connected, the power supply modules 110c and 110d of the housing 100a and the switchboard 200a of FIG. The column to do is an unconnected state (indicated by a blank column).

  The initial value of the power connection information 122 is set by the administrator accessing the user interface 127 from the external network 130 via the external communication bus 154 of the management module 120. The management module 120 performs on / off control and status monitoring of the power supply modules 110a to 110d, and updates the status of the corresponding column of the matrix table according to the status of the power supply modules 110a to 110d. For example, when the power supply modules 110a to 110d are turned on, the corresponding column of the matrix table is updated to the connected state, and when the power supply modules 110a to 110d are turned off, the corresponding column of the matrix table is not connected. Update to (shown in blank). When a power supply module failure is detected or a power supply line failure is detected, the corresponding column of the matrix table is updated to an unconnected state (indicated by a blank column).

  As an example of the failure detection method, the management module 120 measures the output voltage and the output current from the power monitor 112 of the power supply modules 110a to 110d, calculates the power output amount of the power supply modules 110a to 110d, and the power supply module 110a. By detecting that the output power of ˜110d is 0 W, it can be determined that the power supply module itself that has supplied power of 0 W or the power supply line from the switchboard to which the power supply module is connected has failed. Is possible. For example, in the configuration diagram of FIG. 1, when the power line of the switchboard 200a fails, the management module 120 outputs the power modules 110a and 110b of the casing 100a connected to the switchboard 200a and the power module 110a of the casing 100b. It is detected that the power is 0 W, it is determined that the power line of the switchboard 200a has failed, and the power connection information 122 is updated from the content of FIG. 3A to the content of FIG. 3B.

  4, 5, 6, 7, and 8 are examples of the power table 121. FIG.

  The power table 121 includes the maximum power consumption 401, 402, 403 for each power mode value of the management module 120, the server blades 140a to 140c, and the other modules 160, the current power mode value 404, and the current power mode value 404. Are stored as a table.

  The management module 120 controls the power saving control unit 141 so as to limit the power consumption of the server blades 140a to 140c to be equal to or less than the current maximum power consumption 405. The smaller the power mode value, the smaller the power saving control amount by the power saving control unit 141 and the larger the maximum power consumption and the maximum processing performance. The larger the power mode value, the power saving control by the power saving control unit 141. The amount increases and the maximum power consumption and maximum processing performance decrease. As an example of the power saving control of the power saving control unit 141, the rate at which the operating voltage and operating frequency of the server blades 140a to 140c are reduced from the maximum value is controlled, and the rate at which the operating voltage and operating frequency are reduced is controlled. There is a way to do it.

  The power table 121 in FIG. 4 to FIG. 8 is an example in which the power mode value is set to three of 1, 2, 3, and the maximum power consumption 401 when the power mode value is 1 is the minimum from the management module 120. The maximum power consumption when the power saving control by the power saving control unit 141 of the server blades 140a to 140c is not performed at all is shown. The maximum power consumption 403 when the power mode value is 3 is the maximum power consumption 403 from the management module 120 to the server blade 140a. The maximum power consumption when the power saving control by the power saving control unit 141 of ~ 140c is performed to the maximum, and the maximum power consumption 402 when the power mode value is 2, is transmitted from the management module 120 to the server blades 140a to 140c. The maximum power consumption when the power saving control by the power saving control unit 141 is performed between the power mode value = 1 and the power mode value = 3. It is.

  Within the range of the maximum power consumption when the management module 120 performs no power saving control by the power saving control unit 141 of the server blades 140a to 140c and the maximum power consumption when the power saving control is maximized, The number of mode values is set to 4 or more, and the smaller the power mode value, the smaller the power saving control amount by the power saving control unit 141 and the larger the maximum power consumption and the maximum processing performance. The power saving control amount by the power saving control unit 141 is increased to decrease the maximum power consumption and the maximum processing performance as the value of is larger, and finer power saving control is performed according to the number of power mode values set. Is also possible.

  The values of maximum power consumption 401, 402, and 403 for each power mode value are unique numerical values determined by the power specifications of the server blades 140a to 140c, the management module 120, and the other modules 160. The user interface 127 is accessed and set via the external communication bus 154 of 120. The power table 121 also includes a maximum value 406 that can be set for the power upper limit value of the power supply modules 110a to 110d, and a setting value 407 for the current power upper limit value that is set to the power upper limit value 111 of the power supply modules 110a to 110d. The current power monitor value 408 and the past power monitor value 409 acquired from the power monitor 112 of the power supply modules 110a to 110d are held as a table. The maximum settable value 406 of the power upper limit value of the power supply modules 110a to 110d is a unique numerical value determined by the power specifications of the power supply modules 110a to 110d, and the administrator passes the external communication bus 154 of the management module 120 from the external network 130. The user interface 127 is accessed and set.

  The CPU 125 in the management module 120 executes the power upper limit control program 123 so that the power upper limit value of the power supply modules 110a to 110d is less than the maximum settable value 406 of the power upper limit value of the power supply modules 110a to 110d. 111 is set and recorded in the set value 407 of the current power upper limit value of the power supply modules 110a to 110d. The CPU 125 in the management module 120 copies the current power monitor value 408 value of the power supply modules 110a to 110d to the past power monitor value 409 by executing the power upper limit control program 123, and then the power supply modules 110a to 110d. The power monitor value acquired from the power monitor 112 is recorded as the current power monitor value 408.

  The power table 121 holds the rated power capacity 411, the current supply power upper limit 412 and the current supply power 413 of the switchboards 200a to 200d as a table. The rated power capacity 411 is a unique numerical value determined by the equipment specifications of the switchboards 200a to 200d, and is set by the administrator accessing the user interface 127 from the external network 130 via the external communication bus 154 of the management module 120. The CPU 125 in the management module 120 executes the power upper limit control program 123 to set the current power upper limit value of the power modules 110a to 110d connected to the casings 100a to 110c from the power connection information 122. The total of 407 is calculated, and the current supply power upper limit 412 of the switchboards 200a to 200d is recorded.

  For example, when the power connection information 122 is FIG. 3A and the power table 121 is FIG. 4, the power module 110 connected to the switchboard 200a includes the power module 110a of the housing 100a and the power module 110a of the housing 100a. Since it is the power supply module 110b and the power supply module 110a of the housing 100b, the setting value 407 of the power upper limit value 407 of the power supply module 110a of the housing 100a and the power upper limit setting value 407 of the power supply module 110b of the housing 100a. 413W and the total power of the power supply module 110a of the casing 100b, 463W of the setting value 407, 1313W is recorded as the current supply power upper limit 412 of the switchboard 200a.

  Further, the CPU 125 in the management module 120 acquires the power upper limit control program 123 from the power monitor 112 of the power supply modules 110a to 110d connected to the casings 100a to 110c in the power connection information 122. The sum of the current power monitor values 408 is calculated, and the current supply power 413 of the switchboards 200a to 200d is recorded.

  For example, when the power connection information 122 is FIG. 3A and the power table 121 is FIG. 4, the power modules 110 connected to the switchboard 200b are the power modules 110b of the casing 100b and the casing 100c. Since it is the power supply module 110a and the power supply module 110b of the housing 100c, the current power monitor value 408 of the power supply module 110b of the housing 100b is 300 W, and the current power monitor value 408 of the power supply module 110a of the housing 100c is 350 W. Then, 1000 W obtained by adding 350 W of the current power monitor value 408 of the power supply module 110b of the casing 100c is recorded as the current supply power 413 of the switchboard 200b.

  FIG. 9 is an example of a flowchart for explaining the processing of the power upper limit control program 123. The flowchart of FIG. 9 is executed by the CPU 125 in each management module 120 mounted on the casings 100a to 100c.

  In step 510, each of the management modules 120 in the casings 100a to 100c determines whether any of the power supply modules 110a to 110d is in a power limit state or whether all of the power supply modules 110a to 110d are in a power limit state. judge. The determination is made based on whether or not the power supply modules 110 a to 110 d notify the management module 120 of the power limit state via the internal management bus 152.

  When all of the power supply modules 110a to 110d are not in the power limit state, the process proceeds to step 522 for confirming the update of the power supply connection information 122. If any of the power supply modules 110a to 110d is in the power limit state, the process proceeds to step 520 in which the current power monitor value is acquired from the power monitor 112 of the power supply modules 110a to 110d.

  First, a case where all of the power supply modules 110a to 110d are not in the power limit state will be described.

  In step 522, the management module 120 determines whether the power connection information 122 has been changed. If the power connection information 122 has not been changed, the process returns to the start step of the flowchart. If the power connection information 122 has been changed, the process proceeds to step 523.

  In step 523, the management module 120 copies the current power monitor value 408 of the power table 123 to the past power monitor value 409, acquires the current power monitor value from the power monitor 112 of the power supply modules 110a to 110d, The power monitor value 408 is recorded.

  In step 531, the same processing as in step 530 is executed, but there is no power supply module in the power limit state, the processing for resetting the current power mode value 404, and the power upper limit values 111 a to 111 d of the power supply modules 110 a to 110 d. Therefore, when the process of updating / sharing the power table 121 and the power connection information 122 ends, the process returns to the start step of the flowchart.

  Next, a case where any one of the power supply modules 110a to 110d is in a power limit state will be described.

  In step 520, the management module 120 copies the current power monitor value 408 of the power table 123 to the past power monitor value 409, acquires the current power monitor value from the power monitor 112 of the power supply modules 110a to 110d, The power monitor value 408 is recorded. For example, in the configuration diagram of FIG. 1, when the power supply connection information 122 is in the system state of FIG. 3A and the power table 123 is in the system state of FIG. The power monitor values 408a and 408b of the casing 100a and the casing 100b change as shown in FIG. 4 to FIG. 5 in order to compensate for the lost power supply from the power supply lines of the switchboards 200b, 200c, and 200d. To do. At this time, the power monitor values 408a of the power supply modules 110c and 110d of the housing 100a rise from the values shown in FIG. 4 and are suppressed when the current power upper limit value 407a rises. The total power monitor value 408a of the body 100a is reduced from 1000W to 850W in FIGS. On the other hand, the power monitor value 408b of the power supply modules 110b, 110c, and 110d of the casing 100b increases from the value of FIG. 4, but does not reach the current power upper limit setting value 407b, and the power monitor value of the casing 100b. The total of 408b remains at 1200 W in FIGS.

In step 521, the power mode value of the casing having the power supply module in the power limit state is set to the maximum. For example, in the configuration diagram of FIG. 1, when the power supply connection information 122 is in the state of FIG. 3A and the power table 121 is in the state of the system in FIG. 5 Since the power supply modules 110c and 110d of the housing 100a are in the power limit state, the current power mode value 404a of the housing 100a is set to 3 as the maximum. By changing the power mode value 404a, the current value of the maximum power consumption 405a becomes the maximum power consumption 403a of the power mode value = 3. Therefore, the power monitor value 408a is equal to or less than the current upper limit setting value 407a. The power restriction state of the power supply modules 110c and 110d of the housing 100a is released.

  In step 530, the management modules 120 mounted on the casings 100a to 100c communicate with each other via the external network 130 to update the power table 121 and the power connection information 122 to the latest information. For example, in the configuration diagram of FIG. 1, when the power connection information 122 is in the state of FIG. 3A and the power table 123 is in the state of the system in FIG. The management module 120 mounted on the chassis updates the power table 121 and power connection information 122 of the casing 100a, and the management module 120 mounted on the casing 100b updates the power table 121 of the casing 100b. And the power supply connection information 122 are updated, and the management module 120 mounted on the casing 100c updates the power table 121 and the power supply connection information 122 of the casing 100c. Thereafter, each management module 120 mounted in the casings 100a to 100c communicates and shares the power table 121 and the power connection information 122 of the part updated by each management module 120 via the external network 130, The power connection information 122 of each management module 120 of the cases 100a to 100c is shown in FIG. 3B, and the power table 121 is shown in FIG.

  In step 540, the management module 120 sets the current power mode value 408 so that the total of the current power monitor values 408 is close to the sum of the past power monitor values 409 before the power module 110 is power limited. 404 is reset.

  In step 550, the management module 120 sets the power upper limit values 111a to 111d of the power supply modules 110a to 110d within the range not exceeding the rated power capacity 411 of the switchboard, and the difference between the rated power capacity 411 of the switchboard and the current power supply upper limit 412. The power upper limit values 110a to 110d are updated so that is minimized.

  In step 560, the management modules 120 mounted on the casings 100a to 100c communicate with each other via the external network 130, and the power table 121 after the setting change of the power upper limit value 111 of the power supply modules 110a to 110d is performed. Update and share. An example of the power table 121 after step 560 is shown in FIG.

  FIG. 10 is an example of a flowchart for explaining the process of resetting the current power mode value 404 in step 540.

  In step 610, an initial value of the power mode candidate value is set. In the present embodiment, a case will be described in which the current power mode value 404 of FIG. In this case, the initial value of the housing 100a is 3, and the initial values of the housings 100b and 100c are 1.

  In step 620, it is determined whether the power mode candidate value is the minimum value that can be set as the power mode value. In the case of FIG. 6 of the power table 121, the casing 100a whose power mode candidate value is not the minimum value moves to step 630, and the casings 100b and 100c whose power mode candidate value is the minimum value 1 moves to step 641. .

  In step 630, it is determined whether the power mode candidate value is the maximum value that can be set as the power mode value.

  When the power mode candidate value is the maximum value that can be set as the power mode value, the process proceeds to step 631 and loop processing for determining whether the power mode value can be set to a smaller value. If the power mode candidate value is not the maximum value that can be set as the power mode value, the process proceeds to step 650, where the power mode candidate value is set to the current power mode value 404, and the flowchart ends. In the case of FIG. 6 of the power table 121, since the power mode candidate value of the housing 100a is the maximum value, the process proceeds to step 631.

  In steps 631, 632, 633, and 634, the value of the power mode candidate value is decreased by one to find a power mode candidate value in which the total value of the current maximum power consumption 405a is equal to or greater than the past power monitor value 409a. . In the case of FIG. 6 of the power table 121, since the past power monitor value 409a of the casing 100a is 1000 W, when the power mode candidate value is 3 to 2, the total value of the current maximum power consumption 405a is 1000 W to 1250 W. Since the total value of past power monitor values 409a is 1000 W or more, after finding 2 as a power mode candidate value, the process proceeds to step 650, where the power mode candidate value is set to the current power mode value 404a, and the flowchart ends. To do.

  In Steps 641, 642, 643, 644, and 645, the power mode candidate value is incremented by 1 so that the total value of the current maximum power consumption 405a does not become less than the current power monitor value 408. Find out. When the power table 121 is shown in FIG. 6, the total value of the current power monitor value 408b of the casing 100b is 1200 W. Therefore, when the power mode candidate value is 2 to 3, the total value of the current maximum power consumption 405b is From 1355 W to 850 W, the total value of the current power monitor value 408 b is less than 1200 W. Therefore, after finding 2 as the power mode candidate value, the power mode candidate value is set to the current power mode value 404 in step 650. Then, the flowchart ends.

  When the total value of the current power monitor value 408c of the housing 100c is 1400W, and the power mode candidate value is 2 to 3, the current maximum power consumption 405c is 1460W to 920W, and the current power Since the total value of the monitor values 408c is less than 1200 W, after finding 2 as the power mode candidate value, the power mode candidate value is set to the current power mode value 404c in step 650, and the flowchart ends.

  In the example of the power table 112 in FIG. 4 to FIG. 8 and the flowchart in FIG. 10, the current power mode values 404 of the server blades 140a to 140c, the management module 120, and the other modules 160 are all set to the same value. In the blades 140a to 140c, the management module 120, and the other modules 160, priority is given to the power limitation, and the current power mode values 404 of the server blades 140a to 140c, the management module 120, and the other modules 160 are set to different values. It is also possible to control.

  FIG. 11 is an example of a flowchart illustrating processing for setting the current power upper limit setting value 407 in step 550.

  In step 710, the initial value of the setting candidate value of the setting value 407 of the current power upper limit value of the power supply modules 110a to 110d is set. For example, a value obtained by dividing the total value of the current maximum power consumption 405 by the number of power modules supplying power is calculated and set. In the case where the power table 121 is shown in FIG. 7, the power modules that supply power in the housing 100a are the power modules 110c and 110d. Therefore, the total value 1250W of the current maximum power consumption 405 is divided by two. The initial value of the setting candidate value of the current power upper limit setting value 407 is 625W. In addition, since the power modules 110b, 110c, and 110d that supply power in the housing 100b are three units, the current maximum power consumption 405 total value 1355W is divided by 3, and the current power The initial value of the setting candidate value of the upper limit setting value 407 is 452W. In addition, since the power modules 110a, 110b, 110c, and 110d are supplied with power in the casing 100c, the initial value is obtained by dividing 1460W, which is the total value of the current maximum power consumption 405, by 4. Is 365 W.

  In step 720, it is determined whether or not the current setting candidate value of the power upper limit value 407 is less than or equal to the maximum value 406 that can be set for the power upper limit value.

  If the current power upper limit value 407 setting candidate value is not less than or equal to the power upper limit value settable maximum value 406, the current power upper limit value 407 settable value is set to the power upper limit value settable maximum value 406. After executing step 721 for setting a value, the process proceeds to step 730. If the setting candidate value of the current power upper limit value 407 is less than or equal to the maximum value 406 that can be set as the power upper limit value, the process proceeds to step 730 while maintaining the setting candidate value of the current power upper limit value 407 set in step 710. .

  In steps 730, 740, 750, and 760, the setting candidate value of the current power upper limit value 407 is decreased by ΔW so that the value of the current power supply upper limit 412 of the switchboards 200a to 200d becomes equal to or less than the rated power capacity 411. A setting candidate value of the setting value 407 of the current power upper limit value is found. In the case where the power table is shown in FIG. 7, the value of the upper limit 412 of power supplied to the switchboard 200c exceeds the value of the rated power capacity 411 of the switchboard 200c, which is 1500 W. The setting candidate value of the power upper limit value 407 of the power supply modules 110a to 110d of the body 100b is decreased by, for example, ΔW = 5W. When the value of the current power supply upper limit 412 of the switchboards 200a to 200d becomes equal to or less than the rated capacity 411, the process exits the loop of steps 730, 740, 750, and 760 and is a candidate for setting the current power upper limit setting value 407. The value is recorded in the setting value 407 of the current power upper limit value, the value of the setting value 407 of the current power upper limit value is set to the power upper limit value 111 of the power supply modules 110a to 110d, and the flowchart of FIG. .

  1 to 11, in a computer system in which power supplied from a plurality of distribution boards is shared by a plurality of cases, the power supplied from the distribution boards is maximized within a range not exceeding the rated power capacity of the distribution boards. Therefore, it is possible to minimize the frequency of power limitation and minimize the decrease in server processing capacity. In the configuration example of FIG. 1, three units 100a, 100b, and 100c, four power modules 110a to 110d mounted per unit, and servers per unit The number of modules mounted is three server modules 140a to 140c, the number of other modules mounted per case is one other module 160, the number of management modules mounted per case is one management module 120, It is a configuration example of a computer system in the case where the number of distribution boards in the entire system is four distribution boards 200a, 200b, 200b, and 200d. The number of cases, the number of power supply modules, the number of server modules, the number of other modules, and the management Other implementations that do not depart from the scope of the present invention when the number of modules and the number of distribution boards are other than those shown in FIG. Example forms can also be devised.

  100a to 100c chassis, 110a to 110d power supply module, 111 power upper limit value, 112 power monitor, 120 management module, 121 power table, 122 power connection information, 123 power upper limit control program, 140a to 140c server blade

Claims (12)

In a computer system comprising a plurality of casings and a plurality of switchboards, wherein the switchboard supplies power to the casings,
The housing includes a plurality of computer modules, a plurality of power supply modules, and a management module,
The plurality of housings are connected by a bus,
The switchboard is connected to the power supply module,
The management module includes power connection information for managing correspondence between the switchboard and the power supply module for each case, a power table for managing power consumption of the computer module and output power of the power supply module for each case, and Have
When the output power of a certain power supply module belonging to a certain case reaches the upper limit output power set for the certain power supply module,
The computer system according to claim 1, wherein the management module lowers power consumption of a computer module belonging to the certain housing by first power control to lower output power of the certain power supply module. The management module of the certain housing is
When the power state of the certain housing is changed by the first power control, the information on the housing having the power table is updated,
The computer system according to claim 1, wherein the information updated in the power table is transmitted to another case via the bus.   The management module of the certain casing uses the total output power of the power supply module belonging to the certain casing after the first power control as the total output power of the power supply module belonging to the certain casing before the first power control. The computer system according to claim 2, wherein the second power control is performed so as to be close to.   The management module updates an upper limit output power set in a power supply module connected to the switchboard, and sets an upper limit supply power of the switchboard to be equal to or lower than a preset power set in the switchboard. The computer system according to claim 3. The management module of the certain housing is
When the power state of the certain housing is changed by the second power control, information on the housing having the power table is updated,
5. The computer system according to claim 4, wherein the updated information in the power table is transmitted to another casing through the bus.   6. The computer system according to claim 5, wherein the management module includes a power monitor that monitors output power of the power supply module. When the supply of power from the certain switchboard to the power supply module connected to the certain switchboard stops due to a certain switchboard failure,
7. The computer system according to claim 6, wherein a power supply module connected to another switchboard increases output power to compensate for power that is no longer supplied from the power supply module connected to the switchboard. A power management method in a computer system comprising a plurality of casings and a plurality of switchboards, wherein the switchboard supplies power to the casings,
The housing includes a plurality of computer modules, a plurality of power supply modules, and a management module,
The plurality of housings are connected by a bus,
The switchboard is connected to the power supply module,
The management module includes power connection information for managing correspondence between the switchboard and the power supply module for each case, a power table for managing power consumption of the computer module and output power of the power supply module for each case, and Have
When the output power of a certain power supply module belonging to a certain case reaches the upper limit output power set for the certain power supply module,
A power management method characterized by lowering the power consumption of a computer module belonging to the certain casing and lowering the output power of the certain power supply module by the first power control by the management module. The management module of the certain housing is
When the power state of the certain housing is changed by the first power control, the information on the housing having the power table is updated,
9. The power management method according to claim 8, wherein the updated information in the power table is transmitted to another casing via the bus.   The management module of the certain casing uses the total output power of the power supply module belonging to the certain casing after the first power control as the total output power of the power supply module belonging to the certain casing before the first power control. The power management method according to claim 9, wherein the second power control is performed so as to be close to.   The management module updates an upper limit output power set in a power supply module connected to the switchboard, and sets an upper limit supply power of the switchboard to be equal to or lower than a preset power set in the switchboard. The power management method according to claim 10. The management module of the certain housing is
When the power state of the certain housing is changed by the second power control, information on the housing having the power table is updated,
The power management method according to claim 11, wherein the updated information in the power table is transmitted to another housing via the bus.

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