CN108194397A - The fan speed-governing method and device of rack-mounted server system - Google Patents
The fan speed-governing method and device of rack-mounted server system Download PDFInfo
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- CN108194397A CN108194397A CN201711458318.4A CN201711458318A CN108194397A CN 108194397 A CN108194397 A CN 108194397A CN 201711458318 A CN201711458318 A CN 201711458318A CN 108194397 A CN108194397 A CN 108194397A
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- temperature
- duty ratio
- fan
- rack
- sensitive components
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/303—Temperature
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The present invention provides a kind of fan speed-governing method and device of rack-mounted server system.The method includes：The system temperature of rack-mounted server system is detected, while detects the actual temperature of each non-any temperature-sensitive components in rack-mounted server system；According to system temperature, the first duty ratio of fan is determined；According to the actual temperature of each non-any temperature-sensitive components, the corresponding fan duty ratio of each component is determined respectively, and take second duty ratio of the maximum value in all fan duty ratios as fan；When the first duty ratio is more than the second duty ratio, the duty ratio of fan is adjusted according to system temperature, the duty ratio of fan is otherwise adjusted according to the actual temperature of the non-any temperature-sensitive components of corresponding second duty ratio.The present invention can improve the control accuracy of fan speed-regulating, make system fan speed governing more gentle and accurate.
Description
Technical field
The present invention relates to server technology field more particularly to a kind of rack-mounted server system fan speed-governing method and
Device.
Background technology
In rack-mounted server system, the quality of heat dissipation directly affects the performance and safety that calculate, can also influence system
Overall Power Consumption.Traditional heat sink conception is that CPU or intake air temperature are acquired, when the temperature of acquisition reaches setting
Temperature value, fan accelerate immediately；When the temperature value of acquisition is dropped to below the temperature value of setting, starting fan speed-down action.
In the implementation of the present invention, inventor has found at least to have the following technical problems in the prior art：
Existing mode of speed regulation can only be directed to a limited number of a temperature spot and carry out speed governing, and precision is insufficient.
Invention content
The fan speed-governing method and device of rack-mounted server system provided by the invention can improve the control of fan speed-regulating
Precision processed makes system fan speed governing more gentle and accurate.
In a first aspect, the present invention provides a kind of fan speed-governing method of rack-mounted server system, including：
The system temperature of rack-mounted server system is detected, while detects each non-temperature in the rack-mounted server system
Spend the actual temperature of sensing unit；
According to the system temperature, the first duty ratio of fan is determined；
According to the actual temperature of each non-any temperature-sensitive components, the corresponding fan duty ratio of each component is determined respectively,
And take second duty ratio of the maximum value in all fan duty ratios as fan；
When first duty ratio is more than second duty ratio, the duty of fan is adjusted according to the system temperature
Than otherwise according to the duty ratio of the actual temperature of the non-any temperature-sensitive components of correspondence second duty ratio adjusting fan.
Optionally, the duty ratio that fan is adjusted according to the system temperature includes：
When the system temperature is in different temperature range variations, using different duty ratio increment de-regulation fans
Current duty cycle.
Optionally, the actual temperature of the non-any temperature-sensitive components according to correspondence second duty ratio adjusts fan
Duty ratio includes：
Determine the temperature gap between the actual temperature of the non-any temperature-sensitive components and the maximum bearing temperature of the component；
When the temperature gap is less than first threshold, increase the duty ratio of fan with the duty ratio increment of setting, until
The temperature gap reaches preset temperature range；
When the temperature gap is more than second threshold, reduce the duty ratio of fan with the duty ratio increment of setting, until
The temperature gap reaches preset temperature range；
When the temperature gap is within the scope of the default temperature, the duty ratio of fan is kept.
Optionally, the system temperature uses intake air temperature.
Optionally, the non-any temperature-sensitive components include CPU, memory, hard disk, RAID card and network interface card.
Second aspect, the present invention provide a kind of fan speed adjusting device of rack-mounted server system, including：
Temperature detection module for detecting the system temperature of rack-mounted server system, while detects the rack clothes
The actual temperature of each non-any temperature-sensitive components in device system of being engaged in；
First determining module, for according to the system temperature, determining the first duty ratio of fan；
Second determining module for the actual temperature according to each non-any temperature-sensitive components, determines each component respectively
Corresponding fan duty ratio, and take second duty ratio of the maximum value in all fan duty ratios as fan；
First fan adjustment module, for when first duty ratio be more than second duty ratio when, according to the system
Temperature of uniting adjusts the duty ratio of fan；
Second fan adjustment module, for when first duty ratio be less than or equal to second duty ratio when, root
The duty ratio of fan is adjusted according to the actual temperature of the non-any temperature-sensitive components of correspondence second duty ratio.
Optionally, the first fan adjustment module, for when the system temperature is in different temperature range variation,
Using the current duty cycle of different duty ratio increment de-regulation fans.
Optionally, the second fan adjustment module includes：
Determination unit, for determine the maximum bearing temperature of the actual temperature of the non-any temperature-sensitive components and the component it
Between temperature gap；
Accelerator module, for when the temperature gap is less than first threshold, increasing fan with the duty ratio increment of setting
Duty ratio, until the temperature gap reaches preset temperature range；
Deceleration unit, for when the temperature gap is more than second threshold, reducing fan with the duty ratio increment of setting
Duty ratio, until the temperature gap reaches preset temperature range；
Holding unit, for when the temperature gap is within the scope of the default temperature, keeping the duty ratio of fan.
Optionally, the system temperature uses intake air temperature.
Optionally, the non-any temperature-sensitive components include CPU, memory, hard disk, RAID card and network interface card.
It is very fast not only to consider that temperature increases for the fan speed-governing method and device of rack-mounted server system provided by the invention
CPU and intake air temperature, while taken into account the slow other systems component of temperature rise, taken maximum duty ratio setting wind
Fan, had both met the heat dissipation of high-temperature component, and the system that also ensures slowly heats up the cooling requirements of component.When the temperature increases, wind
Continuous action is fanned, until dropping to preset temperature threshold, compared with prior art, the present invention can improve the control of fan speed-regulating
Precision makes system fan speed governing more gentle and accurate, reduces fault time and the maintenance cost of server, improve machine
Energy.
Description of the drawings
Fig. 1 is the flow chart of the fan speed-governing method of the rack-mounted server system of one embodiment of the invention；
Fig. 2 is the principle schematic for adjusting fan duty ratio in the embodiment of the present invention according to system temperature；
Fig. 3 is the temperature gap curve signal for adjusting fan duty ratio in the embodiment of the present invention according to the actual temperature of CPU
Figure；
Fig. 4 is the structure diagram of the fan speed adjusting device of the rack-mounted server system of one embodiment of the invention；
Fig. 5 is a kind of structure diagram of the second fan adjustment module in the embodiment of the present invention.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
Only it is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of fan speed-governing method of rack-mounted server system, as shown in Figure 1, the method
Including：
S11, the system temperature for detecting rack-mounted server system, while detect each non-temperature in rack-mounted server system
Spend the actual temperature of sensing unit；
S12, according to system temperature, determine the first duty ratio of fan；
S13, the actual temperature according to each non-any temperature-sensitive components determine the corresponding fan duty ratio of each component respectively,
And take second duty ratio of the maximum value in all fan duty ratios as fan；
S14, when the first duty ratio is more than the second duty ratio, the duty ratio of fan, otherwise root are adjusted according to system temperature
The duty ratio of fan is adjusted according to the actual temperature of the non-any temperature-sensitive components of corresponding second duty ratio.
In the embodiment of the present invention, using intake air temperature as system temperature, since system temperature variation is very fast, use
Open loop speed governing, as shown in Fig. 2, when system temperature Tk is less than L1, fan keeps relatively low duty ratio, low speed operation, when Tk is situated between
Between L1~L2, when between L2~H1 and between H1~H2, different duty ratio increment de-regulation fans is respectively adopted
Current duty cycle, i.e., when system temperature Tk is in different temperature range variations, using different duty ratio increment de-regulation wind
The current duty cycle of fan.Temperature range is higher, and fan duty ratio increment is bigger, and when Tk is more than H2, fan keeps 100% duty
Than full-speed operation, so as to ensure that rotation speed of the fan reaches safety value in time under the condition of high temperature, reduces system temperature.
The mode of above-mentioned open loop speed governing is properly termed as compound segmentation speed governing, the embodiment of the present invention only divided three sections of L1~L2,
More temperature sections may be set according to actual conditions in L2~H1 and H1~H2.
In the embodiment of the present invention, the slow system unit of temperature rise in system is known as non-any temperature-sensitive components, mainly
Including components such as CPU, memory, hard disk, RAID card, network interface card, PCH and PSU.
Fan is carried out according to the actual temperature of the component of maximum fan duty ratio corresponding in all non-any temperature-sensitive components
The component is denoted as most typically component by speed governing.When between the actual temperature of most typically component and the maximum bearing temperature of the component
Temperature gap exceed preset temperature range when, using the current duty cycle of the duty ratio increment de-regulation fan of setting；When
Temperature gap between the actual temperature of most typically component and the maximum bearing temperature of the component is in the preset temperature range
When interior, the duty ratio for keeping fan is constant.
By taking CPU as an example, CPU is as most typically component, the temperature between the actual temperature of CPU and the maximum bearing temperature of CPU
Degree difference is defined as Tmargin.
With reference to Fig. 3, during to adjust fan duty ratio, the curve synoptic diagram of the Tmargin of CPU.The temperature of setting CPU is wished
Control is in Tcontrol, using Tcontrol-T2 as first threshold, using Tcontrol+T1 as second threshold, and wherein T1, T2
Represent the temperature margin to float up and down, then：[Tcontrol-T2, Tcontrol+T1] is exactly the preset temperature ranges of CPU.
A variable T_last is defined, for the Tmargin of a speed governing before representing, the initial value of T_last is set as
Tcontrol-T2。
If current temperature gap Tmargin is less than first threshold Tcontrol-T2, and Tmargin is less than or equal to T_
Last illustrates that the temperature of CPU also is continuing to increase, then Tmargin is in accelerated warming area, such as Td~Tf in Fig. 3, wind at this time
Fan should accelerate, and increase the duty ratio of fan, and fan accelerates, and current Tmargin is assigned to T_last after acceleration, under
It is used during secondary speed governing.
If current Tmargin is still less than or equal to T_last after being delayed d1 seconds, increase the duty ratio of fan again,
The secondary acceleration of fan；
If current Tmargin is more than T_last after being delayed d1 seconds, illustrate that the temperature of CPU is begun to decline, at Tmargin
In accelerating cooling area, such as Tf~Te in Fig. 3, after needing delay d3 seconds, then T-last is reset, i.e., by this Tmargin readings
T-last is assigned to, as comparison reference next time.Acceleration was not performed in d3 seconds.After resetting T-last,
A. if remaining in accelerating region, acceleration logic is performed again；
B. if in delay d3 seconds, CPU margin deceleration areas is fallen into, then perform deceleration logic.
When temperature gap Tmargin is more than second threshold Tcontrol+T1, i.e. Ta~Tc, Tmargin, which are in, to slow down
Area, at this time fan should slow down, reduce the duty ratio of fan, fan slows down, and delay reduces the duty ratio of fan again after d2 seconds,
Fan secondary speed-reducing；If in delay d2 seconds, Tmargin jumps to accelerating region, then is performed by acceleration logic, increases accounting for for fan
Empty ratio.
When temperature gap Tmargin is when [Tcontrol-T2, Tcontrol+T1] is interior, i.e. Tc~Td, Tmargin are in
Stable region, the duty ratio of holding fan is constant at this time, and fan is failure to actuate.
As can be seen that the thought that the above-mentioned temperature based on CPU carries out fan adjusting is based on target, it is a kind of closed loop tune
Section, degree of regulation higher.
In conclusion the fan speed-governing method of rack-mounted server system provided in an embodiment of the present invention, combines open loop
Speed governing and closed-loop drive take maximum duty ratio to set fan, had both met the heat dissipation of high-temperature component, and also ensured system
The slowly cooling requirements of heating component.When the temperature increases, fan continuous action, until dropping to preset temperature threshold, with showing
There is technology to compare, the present invention can improve the control accuracy of fan speed-regulating, make system fan speed governing more gentle and accurate, reduce
The fault time of server and maintenance cost improve machine performance.
The embodiment of the present invention also provides a kind of fan speed adjusting device of rack-mounted server system, as shown in figure 4, the dress
Put including：
Temperature detection module 41 for detecting the system temperature of rack-mounted server system, while detects the rack
The actual temperature of each non-any temperature-sensitive components in server system；
First determining module 42, for according to the system temperature, determining the first duty ratio of fan；
Second determining module 43 for the actual temperature according to each non-any temperature-sensitive components, determines each portion respectively
The corresponding fan duty ratio of part, and take second duty ratio of the maximum value in all fan duty ratios as fan；
First fan adjustment module 44, for when first duty ratio be more than second duty ratio when, according to described
System temperature adjusts the duty ratio of fan；
Second fan adjustment module 45, for when first duty ratio be less than or equal to second duty ratio when,
The duty ratio of fan is adjusted according to the actual temperature of the non-any temperature-sensitive components of correspondence second duty ratio.
Optionally, the first fan adjustment module 44, for when the system temperature is in different temperature range variations, adopting
With the current duty cycle of different duty ratio increment de-regulation fans.
Optionally, as shown in figure 5, the second fan adjustment module 45 includes：
Determination unit 451, for determining that the actual temperature of the non-any temperature-sensitive components and the maximum of the component bear temperature
Temperature gap between degree；
Accelerator module 452, for when the temperature gap is less than first threshold, increasing wind with the duty ratio increment of setting
The duty ratio of fan, until the temperature gap reaches preset temperature range；
Deceleration unit 453, for when the temperature gap is more than second threshold, reducing wind with the duty ratio increment of setting
The duty ratio of fan, until the temperature gap reaches preset temperature range；
Holding unit 454, for when the temperature gap is within the scope of the default temperature, keeping the duty of fan
Than.
Further, it is using intake air temperature as system temperature, temperature rise in system is slow in the embodiment of the present invention
System unit be known as non-any temperature-sensitive components, mainly including portions such as CPU, memory, hard disk, RAID card, network interface card, PCH and PSU
Part.
The fan speed adjusting device of rack-mounted server system provided in an embodiment of the present invention combines open loop speed governing and closed loop
Speed governing takes maximum duty ratio to set fan, had both met the heat dissipation of high-temperature component, and also ensured system slowly heating portion
The cooling requirements of part.When the temperature increases, fan continuous action, until dropping to preset temperature threshold, compared with prior art,
The present invention can improve the control accuracy of fan speed-regulating, make system fan speed governing more gentle and accurate, reduce the event of server
Downtime and maintenance cost improve machine performance.
One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer read/write memory medium
In, the program is when being executed, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, all should by the change or replacement that can be readily occurred in
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of fan speed-governing method of rack-mounted server system, which is characterized in that including：
The system temperature of rack-mounted server system is detected, while it is quick to detect each non-temperature in the rack-mounted server system
Feel the actual temperature of component；
According to the system temperature, the first duty ratio of fan is determined；
According to the actual temperature of each non-any temperature-sensitive components, the corresponding fan duty ratio of each component is determined respectively, and take
Second duty ratio of the maximum value as fan in all fan duty ratios；
When first duty ratio is more than second duty ratio, the duty ratio of fan is adjusted according to the system temperature, it is no
The duty ratio of fan is then adjusted according to the actual temperature of the non-any temperature-sensitive components of correspondence second duty ratio.
2. the according to the method described in claim 1, it is characterized in that, duty ratio that fan is adjusted according to the system temperature
Including：
When the system temperature is in different temperature range variations, using the current of different duty ratio increment de-regulation fans
Duty ratio.
3. according to the method described in claim 1, it is characterized in that, the non-temperature according to correspondence second duty ratio is quick
The duty ratio that the actual temperature of sense component adjusts fan includes：
Determine the temperature gap between the actual temperature of the non-any temperature-sensitive components and the maximum bearing temperature of the component；
When the temperature gap is less than first threshold, increase the duty ratio of fan with the duty ratio increment of setting, until described
Temperature gap reaches preset temperature range；
When the temperature gap is more than second threshold, reduce the duty ratio of fan with the duty ratio increment of setting, until described
Temperature gap reaches preset temperature range；
When the temperature gap is within the scope of the default temperature, the duty ratio of fan is kept.
4. according to the method described in claim 1, it is characterized in that, the system temperature uses intake air temperature.
5. according to the method described in claim 1, it is characterized in that, the non-any temperature-sensitive components include CPU, memory, hard disk,
RAID card and network interface card.
6. a kind of fan speed adjusting device of rack-mounted server system, which is characterized in that including：
Temperature detection module for detecting the system temperature of rack-mounted server system, while detects the rack-mount server
The actual temperature of each non-any temperature-sensitive components in system；
First determining module, for according to the system temperature, determining the first duty ratio of fan；
Second determining module for the actual temperature according to each non-any temperature-sensitive components, determines that each component corresponds to respectively
Fan duty ratio, and take second duty ratio of the maximum value in all fan duty ratios as fan；
First fan adjustment module, for when first duty ratio be more than second duty ratio when, according to the system temperature
Degree adjusts the duty ratio of fan；
Second fan adjustment module, for when first duty ratio be less than or equal to second duty ratio when, according to right
The actual temperature of the non-any temperature-sensitive components of second duty ratio is answered to adjust the duty ratio of fan.
7. device according to claim 6, which is characterized in that the first fan adjustment module, for working as the system
Temperature is in different temperature range variations, using the current duty cycle of different duty ratio increment de-regulation fans.
8. device according to claim 6, which is characterized in that the second fan adjustment module includes：
Determination unit, for determining between the actual temperature of the non-any temperature-sensitive components and the maximum bearing temperature of the component
Temperature gap；
Accelerator module, for when the temperature gap is less than first threshold, increasing accounting for for fan with the duty ratio increment of setting
Empty ratio, until the temperature gap reaches preset temperature range；
Deceleration unit, for when the temperature gap is more than second threshold, reducing accounting for for fan with the duty ratio increment of setting
Empty ratio, until the temperature gap reaches preset temperature range；
Holding unit, for when the temperature gap is within the scope of the default temperature, keeping the duty ratio of fan.
9. device according to claim 6, which is characterized in that the system temperature uses intake air temperature.
10. device according to claim 6, which is characterized in that the non-any temperature-sensitive components include CPU, memory, hard
Disk, RAID card and network interface card.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711458318.4A CN108194397B (en) | 2017-12-28 | 2017-12-28 | The fan speed-governing method and device of rack server system |
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| CN201711458318.4A CN108194397B (en) | 2017-12-28 | 2017-12-28 | The fan speed-governing method and device of rack server system |
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| CN108194397B CN108194397B (en) | 2019-11-01 |
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