CN102768571A - Energy saving method of PCM-based (phase change memory based) data center - Google Patents
Energy saving method of PCM-based (phase change memory based) data center Download PDFInfo
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- CN102768571A CN102768571A CN2012101948464A CN201210194846A CN102768571A CN 102768571 A CN102768571 A CN 102768571A CN 2012101948464 A CN2012101948464 A CN 2012101948464A CN 201210194846 A CN201210194846 A CN 201210194846A CN 102768571 A CN102768571 A CN 102768571A
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Abstract
The invention discloses an energy saving method of a PCM-based (phase change memory based) data center. The PCM-based data center comprises a DRAM (dynamic random access memory), a disk, a plurality of servers, and a PCM, wherein the DRAM, the disk and the plurality of servers are connected with one another. The PCM is respectively connected with the DRAM and the disk. The energy saving method includes: firstly, a user issues a standby instruction, and an operating system freezes a process in the PCM and cuts off power; and secondly, the operating system reads data from the PCM and restores a value of a register and operation state of the process. The servers execute PCM-based standby or awaking. By the energy saving method, the problems of low reliability of a standby RAM (random access memory) and energy waste when the servers execute a standby strategy can be solved effectively, and the problem that the servers standing by to the disk require long startup time can also be solved effectively.
Description
Technical field
What the present invention relates to is the system and method in a kind of Computer Applied Technology field, specifically is based on the power-economizing method of the data center of PCM.
Background technology
Along with the rise of cloud computing, management and energy-conservation research how to carry out data center become focus gradually.Data center is in large scale usually, sets up and maintenance cost ten minutes costliness.Although data center can provide powerful operation capacity, the power consumption of data center is along with the number of server is the index increase, and this consumption for electric power energy is huge.Power-economizing method to virtual data center has two kinds at present: a kind of research that is based on the integration of resources of virtual machine, and through the migration of virtual machine, the utilization factor of sacrificial section CPU reaches energy-conservation; A kind of research that is based on DVFS is carried out Research on Saving Energy through the frequency of regulating CPU.But the utilization factor that reduces CPU can only could reduce power consumption and have only the computing machine of letting to get into sleep state significantly to a certain degree reducing very limited energy consumption.
Summary of the invention
The present invention is directed to the deficiency of existing situation; A kind of power-economizing method of the data center based on PCM is proposed; Server is carried out based on the dormancy of phase transition storage (PCM) and is waken up; This method can effectively improve server when carrying out dormancy (standby) strategy, dormancy is lower to the reliability of RAM, the problem of energy consumption waste, can effectively reduce the problem of long start-up time that the server dormancy needs behind the disk (DISK) simultaneously.
The present invention realizes through following technical scheme.
A kind of data center based on PCM comprises interconnective dynamic RAM (DRAM), disk and some servers, also comprises PCM, and said PCM is connected with disk with DRAM respectively.
A kind of power-economizing method of the data center based on PCM may further comprise the steps:
The first step, the user sends the dormancy instruction, and operating system is freezed process in PCM, cuts off the electricity supply;
In second step, operating system is reading of data from PCM, recovers the value and the running state of process of register.
The corresponding state of the abstraction interface (ACPI) of operating system entrance management device power supply (DPS) in the said first step.
Said ACPI state is meant the abstraction interface of managing electrical power, comprises S0, S1, and S2, S3, S4, S5, wherein:
-S0 is the routine work state;
-S1 is that system context is not lost, and possibly close display peripherals on a small quantity;
-S2 is that CPU state and data cached meeting are lost;
-S3 all loses for all system contexts except that internal memory, can the partial content in CPU and the L2 cache be saved in the internal memory;
-S4 is that the electric power of all devices all is closed, but the context of mainboard can be preserved;
-S5 is similar with S4, and operating system is not preserved any context, need pass through complete start-up course when waking up.
Technical characterstic of the present invention and effect comprise: non-performance characteristic and the fast reading and writing characteristic of utilizing PCM; Substitute traditional storer with PCM, make server in dormancy, preserve data in PCM, cut off device power supply (DPS) then; In the process that server wakes up, carry out wake operation from PCM.The logical computing machine of one Daepori at the power consumption of CPU at 80 ~ 100W/h.And CPU is when being in idle condition; So no matter power consumption is desktop computer or server at 60 ~ 80W/h.; The utilization factor that reduces CPU can only reduce very limited energy consumption to a certain extent, could cut down the consumption of energy significantly and have only through letting computing machine get into sleep state.When be in time of 30% of server operation dormancy to the PCM state the time, the saving of individual server energy consumption reaches 26.97%, when being in dormancy to the state of PCM in time of 60% of server operation, the saving of individual server energy consumption reaches 54.75%.
Description of drawings
Fig. 1 is invention system architecture synoptic diagram;
Fig. 2 is the logical schematic of dormancy to PCM;
The logical schematic of Fig. 3 for waking up from PCM.
Embodiment
Do detailed explanation in the face of embodiments of the invention down, present embodiment provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technical scheme of the present invention.
Embodiment 1
As shown in Figure 1, present embodiment comprises interconnective dynamic RAM (DRAM), disk and some servers, also comprises phase transition storage (PCM), and this PCM is connected with disk with DRAM respectively.
PCM is meant a kind of new type of solid state semiconductor non-volatility memorizer, and it is the combination materials rapid phase transition under the electric pulse effect again that its storage is based on sulphur, and what the present invention was used is the non-performance characteristic of PCM and the characteristic of fast reading and writing.
The non-performance characteristic of PCM is meant compared to RAM and needs power cycle to refresh service data, and PCM has an inherent data keeping quality, under the situation of outage, still can keep legacy data, has improved the reliability after the dormancy.
The fast reading and writing characteristic of PCM be meant compared to RAM can fast access characteristic, PCM also has the characteristic of fast access, make server after dormancy soon quick-recovery with wake up, do not lose favorable user experience.
Embodiment 2
Embodiment 2 power-economizing method based on the data center of PCM for utilizing that embodiment 1 provides.
Present embodiment is based on the energy consumption reduction method of the data center of PCM, comprises two stages: first stage is that the server dormancy is to PCM; Subordinate phase is that server is upward waken up from PCM.
Present embodiment may further comprise the steps:
The first step, the user sends the dormancy instruction, and operating system is freezed process in PCM, cuts off the electricity supply;
After the user sends the sleep command server; The server dormancy is to PCM; Operating system is freezed and is preserved data in this process, and the dormancy instruction is passed to the bottom hardware phase transition storage, makes the corresponding state of abstraction interface (ACPI) of system's entrance management device power supply (DPS);
In second step, operating system is reading of data from PCM, recovers the value and the running state of process of register;
When server was waken up, server was gone up from PCM and is waken up.In this process, being kept at data in the phase transition storage directly as the internal storage data of current virtual machine, behind the virtual machine activation, the data of the reading and saving process that returns to form, thaws from internal memory.
Dormancy was meant to the PCM stage: as shown in Figure 2, after the user sent the dormancy instruction, operating system was at first freezed the process in the system, preserves the state of CPU register then, and these data all are kept in the dynamic RAM as main memory.Operating system can be sent ACPI dormancy instruction to the hardware platform of lower floor after accomplishing these work, and control is given hardware platform thereupon.ACPI gets into dormant state, preserves data to PCM, the powered-down supply.
The ACPI state is meant the abstraction interface of managing electrical power, and these interfaces had both comprised hardware interface, also comprises some softwares and data-interface.Whether duty, the software according to the hardware of computer system moves, power consumption what and whether needs reboot etc. defined different system states.Comprise S0, S1, S2, S3, S4, S5.Wherein:
S0: routine work state;
S1: system context is not lost, and possibly close display peripherals on a small quantity;
S2:CPU state and data cached meeting are lost;
S3: system contexts all except that internal memory are all lost, and can the partial content in CPU and the L2 cache be saved in the internal memory;
S4: the electric power of all devices all is closed, but the context of mainboard can be preserved;
S5: similar with S4, operating system is not preserved any context, need pass through complete start-up course when waking up.
The server dormancy is meant that operating system is freezed active process, save register data in the PCM equipment as primary memory, cuts off all devices power supply then when the user carries out the dormancy instruction to PCM.
As shown in Figure 3, server is gone up to be waken up from PCM and be meant that operating system is reading of data from PCM when server is waken up from dormancy, recovers the value and the running state of process of register.
Wake up after the user sends wake operation from PCM, the equipment with arousal function can produce a wake events.This wake events is an electric signal, can trigger the initialization chip on the BIOS.Can be being kept at data in the phase transition storage directly as the internal storage data of current virtual machine.Behind the virtual machine activation, the data of the reading and saving process that returns to form, thaws from internal memory.
Through above-mentioned steps, adopt 5 CPU to be configured to Intel Core 2Duo, dominant frequency is 3.00GHz; BIOS version version is v02.61, and ACPI Suspend type is S3 (STR), and host operating system is fedora2.6.32.11-99.fc12.i686.PAE; Client operating system is the server of fedora 2.6.32.11; When 30% time of server up time is in dormancy, energy-conservationly energy-conservationly when reaching 26.97%, 60% dormancy reach 54.75%.Energy-conservationly has a very important meaning for what have an extensive data in server center.
More than specific embodiment of the present invention is described.It will be appreciated that the present invention is not limited to above-mentioned specific implementations, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not influence flesh and blood of the present invention.
Claims (4)
1. the data center based on PCM comprises interconnective DRAM, disk and some servers, it is characterized in that, also comprises PCM, and said PCM is connected with disk with DRAM respectively.
2. a power-economizing method that utilizes the data center based on PCM as claimed in claim 1 is characterized in that, may further comprise the steps:
The first step, the user sends the dormancy instruction, and operating system is freezed process in PCM, cuts off the electricity supply;
In second step, operating system is reading of data from PCM, recovers the value and the running state of process of register.
3. the power-economizing method of the data center based on PCM according to claim 2 is characterized in that, operating system gets into the corresponding state of ACPI in the said first step.
4. the power-economizing method of the data center based on PCM according to claim 3 is characterized in that said ACPI state is meant the abstraction interface of managing electrical power, comprises S0, S1, S2, S3, S4 and S5, wherein:
-S0 is the routine work state;
-S1 is that system context is not lost, and possibly close display peripherals on a small quantity;
-S2 is that CPU state and data cached meeting are lost;
-S3 all loses for all system contexts except that internal memory, can the partial content in CPU and the L2 cache be saved in the internal memory;
-S4 is that the electric power of all devices all is closed, but the context of mainboard can be preserved;
-S5 is similar with S4, and operating system is not preserved any context, need pass through complete start-up course when waking up.
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| CN103207799A (en) * | 2013-04-23 | 2013-07-17 | 中国科学院微电子研究所 | Method, device and system for closing down and starting up computer system |
| CN105915637A (en) * | 2016-06-07 | 2016-08-31 | 厦门纳网科技股份有限公司 | Remote automatic standby and awakening method based on storage system server |
| CN103927145B (en) * | 2014-04-28 | 2017-02-15 | 中国科学院微电子研究所 | System hibernating and awakening method and device based on hybrid memory |
| CN106484472A (en) * | 2016-09-29 | 2017-03-08 | 华为技术有限公司 | A kind of method for recovering internal storage and terminal |
| CN103914325B (en) * | 2014-04-02 | 2017-04-05 | 中国科学院微电子研究所 | Based on the shutdown of the linux system of mixing internal memory, starting-up method and system |
| US10345890B2 (en) | 2013-12-10 | 2019-07-09 | Huawei Device Co., Ltd. | Task management method and device |
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| CN103927145B (en) * | 2014-04-28 | 2017-02-15 | 中国科学院微电子研究所 | System hibernating and awakening method and device based on hybrid memory |
| CN105915637A (en) * | 2016-06-07 | 2016-08-31 | 厦门纳网科技股份有限公司 | Remote automatic standby and awakening method based on storage system server |
| CN106484472A (en) * | 2016-09-29 | 2017-03-08 | 华为技术有限公司 | A kind of method for recovering internal storage and terminal |
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Application publication date: 20121107 |