CN111913651A - Solid state disk and efficiency optimization method of solid state disk - Google Patents
Solid state disk and efficiency optimization method of solid state disk Download PDFInfo
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- 238000005457 optimization Methods 0.000 title claims abstract description 72
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/061—Improving I/O performance
- G06F3/0611—Improving I/O performance in relation to response time
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/0625—Power saving in storage systems
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0679—Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Abstract
The invention provides a solid state disk and an efficiency optimization method of the solid state disk. The efficiency optimization method of the solid state disk comprises the following steps: detecting the queue depth of the solid state disk to judge the use proportion of the queue depth; when the use ratio of the queue depth is higher than a first threshold ratio, judging whether the access speed of the solid state disk can be increased or not so as to increase the access speed of the solid state disk; and when the use ratio of the queue depth is lower than the second threshold ratio, judging whether the access speed of the solid state disk can be reduced in an adjustable manner so as to reduce the access speed of the solid state disk.
Description
Technical Field
The present invention relates to a hard disk and a hard disk optimization method, and more particularly, to a solid state disk and a performance optimization method for the solid state disk.
Background
As data storage devices have evolved, Solid-State Drive (SSD) is the mainstream of the current storage device, because the SSD can provide fast data access speed. However, for the conventional solid state disk, the conventional solid state disk can only operate at a fixed access speed preset by the manufacturer. That is, when a user purchases a solid state disk and uses the solid state disk, the user can only operate the solid state disk at a fixed access speed. In other words, no matter the current usage of the solid state disk, the conventional solid state disk cannot effectively maintain good operation performance under certain specific access situations because the access speed and the power consumption of the solid state disk are not changed. In view of this, a solution of a number of example embodiments will be presented below.
Disclosure of Invention
The invention provides a Solid-State Drive (SSD) and an efficiency optimization method of the SSD, which can correspondingly adjust the access speed of the SSD according to the current use condition of the SSD so as to automatically optimize the operation efficiency of the SSD.
The efficiency optimization method of the solid state disk comprises the following steps: detecting the queue depth of the solid state disk to judge the use proportion of the queue depth; when the use ratio of the queue depth is higher than a first threshold ratio, judging whether the access speed of the solid state disk can be increased or not so as to increase the access speed of the solid state disk; and when the use ratio of the queue depth is lower than the second threshold ratio, judging whether the access speed of the solid state disk can be reduced in an adjustable manner so as to reduce the access speed of the solid state disk.
The solid state disk comprises a solid state disk controller and a performance optimization firmware. The performance optimization firmware is coupled to the solid state hard disk controller. The performance optimization firmware is used for detecting the queue depth of the solid state disk so as to judge the use proportion of the queue depth. When the usage ratio of the queue depth is higher than the first threshold ratio, the performance optimization firmware judges whether the access speed of the solid state disk can be increased so as to increase the access speed of the solid state disk. When the use ratio of the queue depth is lower than the second threshold ratio, the efficiency optimization firmware judges whether the access speed of the solid state disk can be reduced or not so as to reduce the access speed of the solid state disk.
Based on the above, the solid state disk and the efficiency optimization method of the solid state disk of the invention can automatically judge the use condition of the queue depth of the solid state disk so as to correspondingly adjust the access speed of the solid state disk. Therefore, the solid state disk and the efficiency optimization method of the solid state disk can effectively optimize the operation efficiency of the solid state disk.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
Fig. 1 is a functional block diagram of a solid state disk according to an embodiment of the present invention.
Fig. 2 is a flowchart of a method for optimizing performance of a solid state disk according to an embodiment of the invention.
Fig. 3A and fig. 3B are flowcharts illustrating a performance optimization method for a solid state disk according to another embodiment of the invention.
FIG. 4 is a flow diagram of the operation of a user interface in accordance with an embodiment of the present invention.
Wherein, the reference numbers:
10: computer system
100: solid state disk
110: solid state hard disk controller
120: memory device
130: performance optimization firmware
200: processor with a memory having a plurality of memory cells
S210 to S230, S310 to S372, S410 to S450: step (ii) of
Detailed Description
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
the term "coupled," as used throughout this specification, including the claims, may refer to any direct or indirect connection. For example, if a first device couples to a second device, that should be construed that the first device may be directly coupled to the second device or the first device may be indirectly coupled to the second device through other devices, wires, or some means of connection. Further, wherever possible, the same reference numbers will be used throughout the drawings and the description to refer to the same or like parts. Components/parts/steps in different embodiments using the same reference numerals or using the same terms may be referred to one another in relation to the description.
FIG. 1 is a functional block diagram of a computer system according to an embodiment of the present invention. Referring to fig. 1, a computer system 10 includes a Solid-State Drive (SSD) 100 and a processor 200. The solid state disk 100 includes a solid state disk controller 110, a memory 120, and a performance optimization Firmware (Firmware) 130. The solid state hard disk controller 110 is coupled to the memory 120. The memory 120 may be a Flash memory (Flash memory), such as a NAND type Flash memory, but the present invention is not limited thereto. In this embodiment, the solid state disk 100 is installed on a motherboard of a computer, for example, and is coupled to the processor 200. Therefore, when the computer is booted, the processor 200 can boot up and access the solid state drive 100, and the processor 200 can read and execute the performance optimization firmware 130 to automatically optimize the operating performance of the solid state drive 100. In the embodiment, the performance optimization firmware 130 may be pre-written in the memory 120 of the solid state disk 100 or pre-stored in other memories of the solid state disk 100, for example, and the invention is not limited thereto. Even more, in an embodiment, the performance optimization firmware 130 may be an Application Program (APP) and other storage units besides the solid state disk 100.
Fig. 2 is a flowchart of a method for optimizing performance of a solid state disk according to an embodiment of the invention. Referring to fig. 1 and fig. 2, the performance optimization method of the present embodiment may be at least applied to the computer system 10 of the embodiment of fig. 1, so that the processor 200 reads and executes the performance optimization firmware 130 to optimize the solid state disk 100. In step S210, the processor 200 detects the Queue Depth (Queue Depth) of the solid state disk 100, and determines the usage ratio of the Queue Depth. In step S220, when the usage ratio of the queue depth is higher than the first threshold ratio, the processor 200 determines whether the access speed of the solid state disk 100 is adjustable to increase the access speed of the solid state disk 100. In step S230, when the usage ratio of the queue depth is lower than the second threshold ratio, the processor 200 determines whether the access speed of the solid state disk 100 is adjustable to decrease the access speed of the solid state disk 100. Therefore, the computer system 10 of the embodiment can effectively optimize the performance of the solid state disk 100.
More specifically, the processor 200 of the present embodiment may read the solid state disk controller 110 to obtain the depth value of the queue. And the use condition of the current solid state disk 100 can be deduced according to the depth value of the queue. Also, the queue depth may represent the total number of access operations being performed on the solid state disk 100 at the current time. In other words, the performance optimization method of the present embodiment dynamically adjusts the access speed of the solid state disk 100 according to the real-time access status of the solid state disk 100. In one embodiment, the usage percentage of the queue depth being higher than the first threshold percentage may refer to a total usage of the queue depth being greater than 50%, for example. And said usage proportion of the queue depth being lower than the second threshold proportion may for example mean that the total usage of the queue depth is less than 10%. That is, when the processor 200 determines that the current solid state disk 100 operates in the high access state, the processor 200 may automatically increase the access speed of the solid state disk 100 to accelerate the access speed. When the processor 200 determines that the current solid state disk 100 operates in the low access state, the processor 200 may automatically reduce the access speed of the solid state disk 100 to reduce power consumption.
It should be noted that, the aforementioned adjusting the access speed of the solid state disk 100 may refer to, for example, adjusting the operating frequency of the solid state disk controller 110 and/or the memory 120 to increase or decrease the access speed of the solid state disk 100. In addition, in an embodiment, before the processor 200 determines the access state of the solid state disk 100, the processor 200 may determine the access speed of the solid state disk 100 in advance according to the data type of the currently accessed solid state disk 100. For example, when the processor 200 determines that the type of data currently accessed is file data with a large data size, such as an image editing program or a game program, the processor 200 may set the operating frequency of the solid state disk 100 to a higher frequency in advance. Alternatively, when the processor 200 determines that the currently accessed data type is file data of a smaller data amount, such as an image file or a music file, the processor 200 may set the operating frequency of the solid state disk 100 to a lower frequency in advance. Then, the processor 200 detects the queue depth of the solid state disk 100, for example, to execute the steps S210 to S230.
Fig. 3A and fig. 3B are flowcharts illustrating a performance optimization method for a solid state disk according to another embodiment of the invention. Referring to fig. 1, fig. 3A and fig. 3B, the performance optimization method of the present embodiment may be at least applied to the computer system 10 of the embodiment of fig. 1, so that the processor 200 reads and executes the performance optimization firmware 130 to optimize the solid state disk 100. In addition, compared to the embodiment shown in fig. 2, the performance optimization method of the embodiment further matches the temperature of the solid state disk 100 to adjust the access speed. In step S310, the processor 200 performs automatic performance optimization of the solid state disk 100. In step S320, the processor 200 detects the queue depth QE of the solid state disk 100, and determines the usage proportion of the queue depth.
When the queue depth QE is lower than the second threshold ratio TR2 (QE < TR2), the processor 200 proceeds to step S330. In step S330, the processor 200 detects the current operating temperature T measured by the solid state disk controller 110, and sets the current operating temperature T to the default temperature T'. Next, in step S360, the processor 200 determines whether the current access speed of the solid state disk 100 is adjustable. If not, it indicates that the current operating frequency of the solid state disk controller 110 and/or the memory 120 has reached the default lowest frequency. In step S361, the processor 200 maintains the operating frequency of the solid state disk controller 110 and/or the memory 120. If yes, it indicates that the current operating frequency of the solid state disk controller 110 and/or the memory 120 is higher than the default lowest frequency. In step S362, the processor 200 reduces the current operating frequency of the solid state disk controller 110 and/or the memory 120 according to a preset reduction ratio (e.g., reduction by 10%). In other words, when the solid state disk 100 is currently in the low-access state, the processor 200 may further reduce the operating frequency of the solid state disk controller 110 and/or the memory 120 to reduce the access speed of the solid state disk 100. In addition, the purpose of step S330 is further explained. Since the usage amount of the queue depth QE of the solid state disk 100 is necessarily low when the solid state disk 100 is just started to execute, in step S330, the processor 200 may record the current operating temperature (which may be used as the initial operating temperature) of the solid state disk 100 in advance as a temperature judgment reference required for the subsequent judgment.
When the queue depth QE is greater than the first threshold ratio TR1 (QE > TR1), the processor 200 proceeds to step S350. In step S350, the processor 200 determines whether the current access speed of the solid state disk 100 can be increased. If not, it indicates that the current operating frequency of the solid state disk controller 110 and/or the memory 120 has reached the default highest frequency. In step S311, the processor 200 maintains the operating frequency of the solid state disk controller 110. If yes, it indicates that the current operating frequency of the solid state disk controller 110 and/or the memory 120 is lower than the default highest frequency. In step S352, the processor 200 may increase the current operating frequency of the solid state disk controller 110 and/or the memory 120 according to a preset increase ratio (e.g., increase by 10%). In other words, when the solid state disk 100 is currently in the high access state, the processor 200 may further increase the operating frequency of the solid state disk controller 110 and/or the memory 120 to increase the current access speed of the solid state disk 100.
When the queue depth QE is between the first threshold ratio TR1 and the second threshold ratio TR2 (TR1 ≧ QE ≧ TR2), the processor 200 further determines the current operating temperature T of the solid state disk 100. When the current operating temperature T is lower than or equal to the default temperature condition (T ≦ T' + T1), the processor 200 proceeds to step S341. In step S341, the processor 200 maintains the operating frequency of the solid state disk controller 110 and/or the memory 120. When the current operating temperature T is higher than the default temperature condition (T > T' + T1), the processor 200 proceeds to step S370. In step S370, the processor 200 determines whether the current access speed of the solid state disk 100 can be increased. If not, it indicates that the current operating frequency of the solid state disk controller 110 and/or the memory 120 has reached the default highest frequency. In step S371, the processor 200 maintains the operating frequency of the solid state disk controller 110. If yes, it indicates that the current operating frequency of the solid state disk controller 110 and/or the memory 120 is lower than the default highest frequency. In step S372, the processor 200 boosts the current operating frequency of the solid state disk controller 110 and/or the memory 120. In other words, in a normal access state of the solid state disk 100, if the current operating temperature measured by the solid state disk controller 110 is low, the processor 200 maintains the access speed of the solid state disk 100. On the contrary, if the current operating temperature measured by the solid state disk controller 110 is higher, it indicates that the solid state disk 100 operates in a mode with a larger data access amount for a long time, so the processor 200 may further increase the operating frequency of the solid state disk controller 110 and/or the memory 120 to increase the access speed of the solid state disk 100.
In addition, the default temperature condition mentioned above may refer to the default temperature T' plus the default value T1. Also, in one embodiment, the default value t1And may be 20 degrees (c), but the present invention is not limited thereto. In another aspect, when the usage amount of the queue depth QE of the solid state disk 100 has become lower, even if the current temperature measured by the solid state disk controller 110 is still higher (not yet fully cooled), the processor 200 performs steps S330 and S360 to determine whether to reduce the access speed of the solid state disk 100. That is to say, the performance optimization method of the present embodiment may dynamically adjust the access speed of the solid state disk 100, so as to determine to increase the access speed or reduce the power consumption according to the current access condition of the solid state disk 100. In addition, the performance optimization method of the present embodiment may further match the temperature measured by the solid state disk controller 110 to perform a further access speed adjustment.
FIG. 4 is a flow diagram of the operation of a user interface in accordance with an embodiment of the present invention. Referring to fig. 4, the operation flow of the user interface of the present embodiment may at least be applied to the computer system 10 of the embodiment of fig. 1, so that when the processor 200 reads and executes the performance optimization firmware 130, the computer system 10 may execute the operation flow of the present embodiment. In step S410. When the computer system 10 is powered on or started up, the processor 200 executes the performance optimization firmware 130 to display a user interface via the display. The user interface may display two options, and the two options may be a manual set option and an automatic performance optimization option. In step S420, the computer system 10 may receive an external control command through an input device, such as a mouse or a keyboard. In step S430, the processor 200 may determine that the external control command is to select an automatic performance optimization option or a manual setting option. When the external control command is to select the automatic performance optimization option, the processor 200 proceeds to step S440. In step S440, the processor 200 performs automatic performance optimization selection to perform the performance optimization process as described in the embodiment of fig. 2 or fig. 3A and 3B. However, when the external control command is selected from the manual setting options, the processor 200 sets the ramp-up setting or the ramp-down setting of the access speed of the solid state disk 100 according to the external control command (further set by the user). For example, the up-setting may include the first threshold ratio and the preset up-setting ratio of the above embodiment, and the down-setting may include the second threshold ratio and the preset down-setting ratio of the above embodiment. Therefore, the operation flow of the user interface of the present embodiment can provide the function of flexibly adjusting the access speed of the solid state disk 100 for the user.
In summary, the solid state disk and the performance optimization method of the solid state disk of the present invention can automatically determine the use condition of the queue depth of the solid state disk and detect the working temperature of the solid state disk, so as to correspondingly adjust the access speed of the solid state disk according to the use condition and the working temperature of the solid state disk. Therefore, the solid state disk and the efficiency optimization method of the solid state disk can effectively achieve the effects of increasing the access speed or reducing the power consumption by optimizing the operation efficiency of the solid state disk.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (20)
1. An efficiency optimization method for a solid state disk, comprising:
detecting a queue depth of the solid state disk to judge a use ratio of the queue depth;
when the use ratio of the queue depth is higher than a first threshold ratio, judging whether the access speed of the solid state disk can be increased or not so as to increase the access speed of the solid state disk; and
when the usage ratio of the queue depth is lower than a second threshold ratio, whether the access speed of the solid state disk can be reduced is judged so as to reduce the access speed of the solid state disk.
2. The performance optimization method of claim 1, further comprising:
detecting an operating temperature of the solid state disk controller;
maintaining the access speed of the solid state disk when the usage ratio of the queue depth is between the first threshold ratio and the second threshold ratio and the operating temperature is lower than or equal to a default temperature condition, wherein the default temperature condition is a default temperature plus a default value; and
when the usage ratio of the queue depth is between the first threshold ratio and the second threshold ratio and the working temperature is higher than the default temperature condition, determining whether the access speed of the solid state disk can be increased so as to increase the access speed of the solid state disk.
3. The performance optimization method of claim 2, further comprising:
when the usage proportion of the queue depth is lower than the second threshold proportion, the operating temperature of the solid state disk controller is detected, and the operating temperature is taken as the default temperature.
4. The performance optimization method of claim 1, wherein before detecting the queue depth of the solid state disk, the performance optimization method further comprises:
the access speed of the solid state disk is determined according to a data type of the solid state disk.
5. The performance optimization method of claim 1, wherein determining whether the access speed of the solid state disk is adjustable comprises:
when the working frequency of a solid state hard disk controller reaches a default highest frequency, maintaining the working frequency of the solid state hard disk controller; and
when the working frequency of the solid state hard disk controller is lower than the default highest frequency, the working frequency of the solid state hard disk controller is increased according to a default increasing proportion.
6. The performance optimization method of claim 1, wherein determining whether the access speed of the solid state disk is adjustable to reduce the access speed of the solid state disk comprises:
when the working frequency of a solid state hard disk controller reaches a default lowest frequency, maintaining the working frequency of the solid state hard disk controller;
when the working frequency of the solid state hard disk controller is higher than the default lowest frequency, the working frequency of the solid state hard disk controller is adjusted and reduced according to a default adjustment and reduction proportion.
7. The performance optimization method of claim 1, wherein the step of increasing the access speed of the solid state disk further comprises increasing a memory frequency of a memory of the solid state disk, and the step of decreasing the access speed of the solid state disk further comprises decreasing the memory frequency of the memory of the solid state disk.
8. The performance optimization method of claim 1, further comprising:
displaying a user interface and receiving an external control command, wherein the user interface includes an automatic performance optimization option;
when the external control command is to select the automatic performance optimization option, the step of detecting the queue depth of the solid state disk and judging the usage proportion of the queue depth is executed.
9. The performance optimization method of claim 8, wherein the user interface includes a manual setting option, and the performance optimization method further comprises:
when the external control instruction is to select the manual setting option, setting an up setting or a down setting of the access speed of the solid state disk according to the external control instruction.
10. The performance optimization method of claim 9, wherein the ramp-up setting includes the first threshold ratio and a predetermined ramp-up ratio, and the ramp-down setting includes the second threshold ratio and a predetermined ramp-down ratio.
11. A solid state disk, comprising:
a solid state disk controller; and
a performance optimization firmware coupled to the solid state disk controller and configured to detect a queue depth of the solid state disk to determine a usage ratio of the queue depth,
wherein when the usage ratio of the queue depth is higher than a first threshold ratio, the performance optimization firmware determines whether an access speed of the solid state disk can be increased to increase the access speed of the solid state disk,
when the usage ratio of the queue depth is lower than a second threshold ratio, the performance optimization firmware determines whether the access speed of the solid state disk is adjustable to decrease the access speed of the solid state disk.
12. The solid state disk of claim 11, wherein the performance optimization firmware detects an operating temperature of the solid state disk controller,
wherein the performance optimization firmware maintains the access speed of the solid state disk when the utilization ratio of the queue depth is between the first threshold ratio and the second threshold ratio and the operating temperature is less than or equal to a default temperature condition, wherein the default temperature condition is a default temperature plus a default value,
when the usage ratio of the queue depth is between the first threshold ratio and the second threshold ratio and the operating temperature is higher than the default temperature condition, the performance optimization firmware determines whether the access speed of the solid state disk can be increased so as to increase the access speed of the solid state disk.
13. The solid state disk of claim 12, wherein the performance optimization firmware detects the operating temperature of the solid state disk controller when the usage percentage of the queue depth is lower than the second threshold percentage, and uses the operating temperature as the default temperature.
14. The solid state drive of claim 11, wherein the performance optimization firmware determines the access speed of the solid state drive according to a data type of the solid state drive before detecting the queue depth of the solid state drive.
15. The solid state disk of claim 11, wherein the performance optimization firmware maintains an operating frequency of the solid state disk controller when the operating frequency of the solid state disk controller has reached a predetermined maximum frequency, and adjusts the operating frequency of the solid state disk controller according to a predetermined scaling ratio when the operating frequency of the solid state disk controller is lower than the predetermined maximum frequency.
16. The solid state disk of claim 11, wherein the performance optimization firmware maintains the operating frequency of the solid state disk controller when the operating frequency of the solid state disk controller has reached a predetermined minimum frequency, and adjusts down the operating frequency of the solid state disk controller according to a predetermined down-scaling ratio when the operating frequency of the solid state disk controller is higher than the predetermined minimum frequency.
17. The solid state drive of claim 11, further comprising a memory, wherein the performance optimization firmware increases the access speed of the solid state drive further comprises increasing a memory frequency of the memory, and wherein the performance optimization firmware decreases the access speed of the solid state drive further comprises decreasing the memory frequency of the memory.
18. The solid state disk of claim 11, wherein the performance optimization firmware further comprises a user interface including an automatic performance optimization option, and the performance optimization firmware receives an external control command,
when the external control command is to select the automatic performance optimization option, the performance optimization firmware performs an operation of detecting the queue depth of the solid state disk and determining the usage proportion of the queue depth.
19. The solid state disk of claim 18, wherein the user interface comprises a manual setting option, and when the external control command is to select the manual setting option, the performance optimization firmware executes a ramp-up setting or a ramp-down setting for setting the access speed of the solid state disk according to the external control command.
20. The solid state disk of claim 19, wherein the ramp-up setting comprises the first threshold ratio and a predetermined ramp-up ratio, and the ramp-down setting comprises the second threshold ratio and a predetermined ramp-down ratio.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113838517A (en) * | 2021-09-16 | 2021-12-24 | 中国人民解放军海军工程大学 | Test data analysis method for reflecting hard disk efficiency |
| CN113838517B (en) * | 2021-09-16 | 2023-12-12 | 中国人民解放军海军工程大学 | Test data analysis method for reflecting hard disk efficiency |
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