TWI768829B - Parameter adjusting method for a memory device and a memory storage system - Google Patents

Abstract

A parameter adjusting method for a memory device and a memory storage device are disclosed. The method includes: sending a parameter adjusting command to the memory device to instruct the memory device to adjust at least one system parameter according to the parameter adjusting command. The at least one system parameter influences a behavior of at least one default operation performed by the memory device. The memory device does not adjust the at least one system parameter without receiving of the parameter adjusting command.

Description

Parameter adjustment method of memory device and memory storage system

The present invention relates to a control technology of a memory device, and more particularly, to a method for adjusting parameters of a memory device and a memory storage system.

Memory devices (eg, flash memory devices) have the characteristics of non-volatile data, power saving, small size, and no mechanical structure, so they are more and more frequently used in various electronic devices such as computers. Generally speaking, developers will pre-set a number of system parameters in the memory device before the memory device leaves the factory. Each system parameter corresponds to one or more preset operations. However, after the memory device leaves the factory, the memory device itself often cannot modify these system parameters according to the current requirements (eg, the type or working state of the coupled host system). In particular, in some cases, the use of the default system parameters may result in a decrease in performance when the memory device and the host system cooperate with each other, and may even cause compatibility problems between the memory device and the host system.

The present invention provides a parameter adjustment method of a memory device and a memory storage system, which can improve the operation performance of the memory device.

Embodiments of the present invention provide a method for adjusting parameters of a memory device, which is used in a host system. The host system is coupled to the memory device. The parameter adjustment method includes: sending a parameter adjustment command to the memory device to instruct the memory device to adjust at least one system parameter according to the parameter adjustment command. The at least one system parameter affects the behavior of the memory device to perform at least one predetermined operation. The memory device does not adjust the at least one system parameter by itself without receiving the parameter adjustment command.

Embodiments of the present invention further provide a memory storage system, which includes a host system and a memory device. The memory device is coupled to the host system. The host system is used for sending a parameter adjustment command to the memory device. The memory device is used for adjusting at least one system parameter according to the parameter adjustment instruction and executing at least one preset operation according to the at least one system parameter. The at least one system parameter affects the behavior of the memory device to perform the at least one predetermined operation. The memory device does not adjust the at least one system parameter by itself without receiving the parameter adjustment command.

Based on the above, the host system can issue a parameter adjustment command to the memory device according to the current state or demand, so as to instruct the memory device to adjust at least one system parameter that the memory device itself cannot adjust or does not meet the modification conditions, thereby affecting the Behavior when the subsequent memory device performs at least one predetermined operation. Thereby, the operation performance of the memory device can be improved.

FIG. 1 is a schematic diagram of a memory storage system according to an embodiment of the present invention. Referring to FIG. 1 , the memory storage system 10 includes a host system 11 and a memory device 12 . The host system 11 can store data in the memory device 12 or read data from the memory device 12 . For example, host system 11 is any system that can substantially cooperate with memory device 12 to store data, such as a computer system, digital camera, video camera, communication device, audio player, video player, or tablet, etc., while memory The device 12 can be a flash drive, a memory card, a Solid State Drive (SSD), a Secure Digital (SD) card, a Compact Flash (CF) card, or an embedded storage device. Non-volatile memory device.

In one embodiment, the host system 11 may include a connection interface 111 , a processor 112 and an input/output interface 113 . The connection interface 111 is used for coupling to and communicating with the memory device 12 . For example, the host system 11 may transmit data to or receive data from the memory device 12 via the connection interface 111 .

The processor 112 is coupled to the connection interface 111 . The processor 112 may be responsible for all or part of the operation of the host system 11 . For example, the processor 112 may include a central processing unit (CPU) or other programmable general-purpose or special-purpose microprocessors, digital signal processors (DSPs), programmable controllers, application-specific Integrated circuits (Application Specific Integrated Circuits, ASIC), Programmable Logic Devices (Programmable Logic Device, PLD) or other similar devices or combinations of these devices.

The input/output interface 113 is coupled to the processor 112 . The processor 112 may include any practically required signal input/output devices, such as a network interface card, a mouse, a keyboard, a touchpad, a screen and/or speakers, and the like.

In one embodiment, the memory device 12 includes a connection interface 121 , a memory controller 122 and a memory module 123 . The connection interface 121 is used to connect to the connection interface 111 of the host system 11 and communicate with the host system 11 via the connection interface 111 . For example, the connection interfaces 111 and 121 may conform to Serial Advanced Technology Attachment (SATA), Parallel Advanced Technology Attachment (PATA), Peripheral Component Interconnect Express (PCI Express) or general serial Various connection interface standards such as Universal Serial Bus (USB). In one embodiment, the connection interfaces 111 and 121 conform to the NVM Express (NVMe) specification.

The memory controller 122 is coupled to the connection interface 121 and the memory module 123 . The memory controller 122 is used to execute a plurality of logic gates or control commands implemented in a hardware type or a firmware type, and can perform data writing, reading and writing in the memory module 123 according to the instructions of the host system 11 . Erase, etc. In addition, the memory controller 122 can also control the overall operation of the memory device 12 . In one embodiment, the memory controller 122 is also referred to as a flash memory controller.

The memory module 123 is used for storing data written by the host system 11 . For example, the memory module 123 may include a single-level cell (SLC) NAND-type flash memory module (ie, a flash memory module in which one memory cell can store 1 bit), a multi-level Multi Level Cell (MLC) NAND flash memory modules (ie, a memory cell can store 2-bit flash memory modules), Triple Level Cell (TLC) NAND flash memory modules Flash memory modules (ie, one memory cell can store 3-bit flash memory modules) and/or Quad Level Cell (QLC) NAND-type flash memory modules (ie, one The memory cells can store 4-bit flash memory modules). For example, the memory cells in the memory module 123 store data based on changes in threshold voltages. In one embodiment, the memory module 123 is also referred to as a flash memory module.

The memory module 123 includes a plurality of physical units. Each physical unit may include multiple memory cells. For example, a physical unit may include one or more physical pages, one or more physical blocks, or one or more other memory cell management units. Memory cells belonging to the same physical page can be programmed simultaneously to store data. Memory cells belonging to the same physical block can be erased simultaneously to clear data.

In one embodiment, the memory module 123 includes a storage area 101 and a system area 102 . The physical units in the storage area 101 are used to store data (also referred to as user data) from the host system 11 . The physical units in the system area 102 are used to store management data of the memory device 12 , such as a logical-to-physical mapping table, a bad block management table, and at least some system parameters required for the operation of the memory device 12 .

In one embodiment, the memory controller 122 may configure a plurality of logical units to map the physical units in the storage area 101 . For example, a logical unit may include one or more logical block addresses (Logical Block Address, LBA). The memory controller 122 may record the mapping relationship between the logical unit and the physical unit in the logical-to-physical mapping table. When receiving an access command from the host system 11, the memory controller 122 can access the corresponding physical unit according to the logic-to-physical mapping table. In one embodiment, the memory controller 122 may not configure any logical unit to map the physical units in the system area 102, so as to prevent the management data (such as the system parameters) in the system area 102 from being accidentally accessed by the user (or the host system) 11) Modification.

In one embodiment, the memory controller 122 can perform at least one preset operation according to system parameters stored in the system area 102 . Such system parameters may affect the behavior of the memory controller 122 to perform the preset operation, which may affect the performance of the preset operation.

In one embodiment, before the memory device 12 is shipped from the factory, the developer will first set at least some of the system parameters stored in the system area 102 to default values. In general, the memory controller 122 does not actively modify or adjust such system parameters.

In one embodiment, the preset operation may include at least one of a power state management operation, a background data sorting operation, and a temperature control operation. The behavior of the memory controller 122 to perform the power state management operation, the background data cleaning operation, and the temperature control operation may be affected by corresponding system parameters, respectively.

In one embodiment, during power state management operations, the memory controller 122 may adjust the power state of the memory device 12 according to one or more system parameters (also referred to as first system parameters) in the system area 102 . For example, adjusting the power state of the memory device 12 includes putting the memory device 12 into a sleep state. For example, the first system parameter may include a time threshold (also referred to as a first time threshold). When the memory controller 122 determines that the idle time of the memory module 123 or the memory device 12 exceeds the first time threshold, the memory controller 122 can adjust the power state of the memory device 12 so that the memory device 12 Go to sleep. Then, when normal operation is required, the memory controller 122 can adjust the power state of the memory device 12 again to wake up the memory device 12 .

In one embodiment, in a background data cleanup operation, the memory controller 122 may perform data cleanup in the background according to one or more system parameters (also referred to as second system parameters) in the system area 102 . For example, the data sorting includes moving valid data from a certain physical unit in the storage area 101 to another physical unit for storage. The valid data refers to the data currently mapped by the logical unit. For example, a data can be considered invalid data if it is not currently mapped by any logical unit. For example, the second system parameter may include a quantity threshold. When the memory controller 122 determines that the total number of available physical units (also referred to as idle physical units) in the memory module 123 is less than this number threshold, the memory controller 122 may perform the data sorting in the background to The effective data scattered in multiple physical units is centrally stored, thereby releasing more available physical units. In one embodiment, the background data cleaning operation may include a garbage collection process or a similar data consolidation process. In addition, the second system parameter may also include a time threshold (also referred to as a second time threshold). The second time threshold can be used to define a duration of each time data cleaning is performed in the background. For example, assuming that the second time threshold is 10 seconds, the memory controller 122 can perform the background data cleaning within 10 seconds after each start of the background data cleaning operation.

In one embodiment, in the temperature control operation, the memory controller 122 may perform temperature control of the memory device 12 according to one or more system parameters (also referred to as third system parameters) in the system area 102, such as , to cool the memory device 12 . For example, the third system parameter may include one or more temperature thresholds. When the memory controller 122 determines that the temperature of the memory device 12 exceeds a certain temperature threshold, the memory controller 122 can perform at least one cooling method, such as reducing the write bandwidth and/or clock frequency of the memory device 12 etc. in an attempt to reduce the temperature of the memory device 12 . In addition, more preset operations can be performed according to corresponding system parameters, which are not limited in the present invention.

In one embodiment, each system parameter is a default value when the memory device 12 is shipped from the factory. For example, the default value is set by the developer before the memory device 12 leaves the factory, and theoretically the preset system parameters should meet the usage requirements of the memory device 12 in most cases. After the memory device 12 is shipped from the factory, the memory device 12 will not actively adjust the system parameters if there is no system update or maintenance action such as firmware updating or returning to the original factory to update the system settings. However, in practice, performing the aforementioned preset operations according to the preset system parameters (even the system parameters updated by the original factory) may not meet the current version, operating status or performance requirements of the host system 11 .

In one embodiment, the processor 112 may send a parameter adjustment command to the memory device 12 . The parameter adjustment command can be used to instruct the memory device 12 to adjust at least one system parameter according to the parameter adjustment command. In particular, the adjusted system parameters may affect the behavior of the memory device 12 to perform at least one predetermined operation. After receiving the parameter adjustment command, the memory controller 122 can adjust the corresponding system parameters according to the parameter adjustment command. The adjusted system parameters may be stored back into the system area 102 . In one embodiment, if a system parameter itself does not support modification by the memory device 12 or the conditions for adjusting the system parameter are not met, the memory device 12 will not automatically adjust the parameter without receiving the parameter adjustment command. Adjust the system parameters.

In one embodiment, the processor 112 may send a parameter query command to the memory device 12 . The parameter query command can instruct the memory device 12 to return status information related to at least one system parameter to be adjusted. After receiving the parameter query command, the memory controller 122 can transmit status information related to at least one system parameter to be adjusted to the host system 11 according to the parameter query command. Then, the processor 112 can send the parameter adjustment command to the memory device 12 according to the status information.

In one embodiment, assuming that the system parameter to be adjusted includes the first parameter, the state information related to the first parameter may reflect the current parameter value of the first parameter, the default parameter value of the first parameter, the At least one of the replacement parameter value and whether the first parameter can be adjusted. The current parameter value of the first parameter refers to the parameter value of the first parameter that is set once. For example, when the memory device 12 is turned on next time, the current parameter value of the first parameter can be restored to the default parameter value of the first parameter. Alternatively, if the substitute parameter value of the first parameter has been set, the current parameter value of the first parameter can be restored to the substitute parameter value of the first parameter when the memory device 12 is turned on next time. The preset parameter value of the first parameter refers to the preset value of the first parameter. The substitute parameter value of the first parameter refers to the parameter value of the first parameter that is not set once. In other words, the replacement parameter value of the first parameter can be used to replace the preset parameter value of the first parameter multiple times, permanently or permanently. In addition, the information of whether the first parameter can be adjusted may reflect whether the first parameter can be adjusted. If the first parameter can be adjusted, the host system 11 can instruct the memory device 12 to adjust the first parameter through the parameter adjustment command. On the contrary, if the first parameter cannot be adjusted, the host system 11 cannot instruct the memory device 12 to adjust the first parameter through the parameter adjustment command. In one embodiment, if the first parameter cannot be adjusted, when receiving a parameter adjustment command instructing to adjust the first parameter, the memory device 12 may ignore the parameter adjustment command and not adjust the first parameter. In one embodiment, the processor 112 only adjusts the adjustable first parameter.

In one embodiment, the processor 112 can detect the system status of the host system 11 . The processor 112 can send the parameter adjustment command to the memory device 12 according to the system state, so as to improve the performance of the memory device 12 to perform the at least one preset operation in the system state of the host system 11 . For example, in one embodiment, the processor 112 can instantly detect the current temperature, busyness, idle state, application activation state, boot duration, operating system version, firmware version, network connection state, and and/or various system states such as network communication quality and the like, and send the parameter adjustment command according to the detection result, so as to instruct the memory device 12 to adjust (eg, optimize) at least part of the system parameters. In addition, in one embodiment, the processor 112 may also send the parameter adjustment command according to the update command or the update package issued by the remote server.

For example, in one embodiment, it is assumed that certain versions of the operating system are installed on the host system 11 resulting in compatibility issues when connecting to certain types of memory devices 12 . By adjusting certain system parameters in the memory device 12 , there is an opportunity to improve the compatibility between the host system 11 and the memory device 12 . Alternatively, in one embodiment, assuming that the user of the host system 11 is often not at his seat (ie, the host system 11 has not been operated for a long time), by modifying specific system parameters in the memory device 12 (for example, extending the execution time of background data sorting) time), there is an opportunity to improve the system performance of the host system 11 and/or the memory device 12 when the user returns to operate the host system 11 next time. In more possible usage scenarios, the system performance of the host system 11 and/or the memory device 12 can be improved by adjusting some system parameters of the memory device 12 , which are not repeated here.

FIG. 2 is a schematic diagram of adjusting system parameters of a memory device by sending a parameter adjustment command according to an embodiment of the present invention. Referring to FIG. 2 , in one embodiment, the host system 11 has a driver 21 . The driver 21 may be implemented (eg, installed) in the host system 11 in the form of software or firmware and used to drive the memory device 12 . In one embodiment, the drive 21 is also referred to as a flash memory drive, a storage drive, or an SSD drive.

In one embodiment, the driver 21 can send the parameter adjustment command CMD(S) (also referred to as the first parameter adjustment command) to the memory device 12 according to the preset configuration information. The parameter adjustment command CMD(S) can be used to instruct the memory device 12 to set a specific parameter (also referred to as a first parameter) in the system parameters 201 to a specific value (also referred to as a first value). For example, it is assumed that the system parameters 201 include parameters P(1) to P(n). The memory controller 122 can set at least one of the parameters P( 1 ) to P(n) according to the value carried by the parameter adjustment command CMD(S). Taking the parameter P(1) as an example, the memory controller 122 can set the value of the parameter P(1) to be the same as the value carried by the parameter adjustment command CMD(S). The first value may be different from the preset value of the first parameter.

In one embodiment, the driver 21 may perform initialization for the memory device 12 . For example, the driver 21 may perform initialization for the memory device 12 when the memory device 12 is first connected to the host system 11 . During the initialization process for the memory device 12 , the driver 21 may send a parameter adjustment command CMD(S) to the memory device 12 according to the preset configuration information to initially set the system parameters 201 .

FIG. 3 is a schematic diagram of adjusting system parameters of a memory device by sending a parameter adjustment command according to an embodiment of the present invention. Referring to FIG. 3 , in one embodiment, the host system 11 has a control program 31 and a driver 21 . The control program 31 may be implemented in software (eg, installed) in the host system 11 and run by the operating system of the host system 11 .

In one embodiment, the driver 21 can send the parameter adjustment command CMD(S)' (also referred to as the second parameter adjustment command) to the memory device 12 according to the instruction of the control program 31 . The parameter adjustment command CMD(S)' can be used to instruct the memory device 12 to set a specific parameter (such as a first parameter) in the system parameters 201 to a specific value (also referred to as a second value). For example, the memory controller 122 may set at least one of the parameters P(1)˜P(n) according to the value carried by the parameter adjustment command CMD(S)'. Taking the parameter P(1) as an example, the memory controller 122 can set the value of the parameter P(1) to be the same as the value carried by the parameter adjustment command CMD(S)'. The second value may be different from the preset value of the first parameter.

In one embodiment, the parameter adjustment command CMD(S) (or CMD(S)') may instruct to perform a single setting or a non-single setting for the first parameter. If the parameter adjustment command CMD(S) (or CMD(S)') instructs to perform a single setting of the first parameter, the memory controller 122 may adjust or modify according to the CMD(S) (or CMD(S)') The current parameter value of the first parameter. In addition, if the parameter adjustment command CMD(S) (or CMD(S)') instructs to perform non-single setting for the first parameter, the memory controller 122 can adjust the parameters according to CMD(S) (or CMD(S)'). Adjust or modify the current parameter value of the first parameter and the substitute parameter value of the first parameter.

In one embodiment, at a certain time point (also referred to as the first time point), the driver 21 can send a parameter adjustment command CMD(S) to the memory device 12 according to the preset configuration information, so as to adjust the system parameter 201 Make initial settings. For example, according to the parameter adjustment command CMD(S), the memory controller 122 may set the first parameter to the first value. The first value may be different from the preset value of the first parameter. For example, the first time point includes the time point when the driver 21 performs the initialization for the memory device 12 . Then, at another time point (also referred to as a second time point) later than the first time point, the driver 21 can send the parameter adjustment command CMD(S)' to the memory device 12 according to the instruction of the control program 31 to The system parameters 201 are dynamically updated (also called advanced settings). For example, according to the parameter adjustment command CMD(S)', the memory controller 122 may set the first parameter to the second value. The second value may be different from the first value.

In other words, in one embodiment, after the system parameters 201 are initially set, the control program 31 may continue to detect the system status of the host system 11 . As the system state of the host system 11 changes, the control program 31 can send the parameter adjustment command CMD(S)' to the memory device 12 according to the current system state of the host system 11 to perform advanced settings for the system parameters 201. By dynamically adjusting the system parameters 201 , an attempt can be made to improve the system performance when the host system 11 and the memory device 12 cooperate with each other. In one embodiment, if the parameter adjustment command CMD(S) or CMD(S)' is not received, the memory controller 122 may not actively adjust or modify the system parameter 201 .

FIG. 4 is a schematic diagram of an adjustment history of system parameters according to an embodiment of the present invention. Referring to FIG. 2 , FIG. 3 and FIG. 4 , it is assumed that the parameters P( 1 ) to P( 4 ) have preset values A( 0 ) to D( 0 ), respectively. The default values A(0)˜D(0) are, for example, set by developers before the memory device 12 is shipped from the factory.

At time point T(A), the driver 21 may send a parameter adjustment command CMD(S) according to the preset configuration information to instruct the memory controller 122 to modify the parameter P(2) from the value B(0) to the value B(1) ) and modify the parameter P(3) from the value C(0) to the value C(1). Then, at the time point T(B) after the time point T(A), the driver 21 can send the parameter adjustment command CMD(S)' according to the instruction of the control program 31 to instruct the memory controller 122 to adjust the parameter P(1) Change from value A(0) to value A(2), change parameter P(2) from value B(1) to value B(2) and change parameter P(3) from value C(1) to value C (2). Then, at the time point T(C) after the time point T(B), the driver 21 can send the parameter adjustment command CMD(S)' again according to the instruction of the control program 31 to instruct the memory controller 122 to adjust the parameter P(2 ) is modified from value B(2) to value B(3).

In one embodiment, the time point T(A) may include the time point when the driver 21 initially sets the system parameter 201 . In one embodiment, the time point T(B) may include the time point when the control program 31 updates the system parameters 201 according to the update command or the update package from the remote server. In one embodiment, the time point T(C) may include the time point when the control program 31 actively updates the system parameters 201 according to the current system state of the host system 11 . In one embodiment, the time points T(B) and T(C) can also be reversed.

It should be noted that, in an embodiment of FIG. 4 , except that at time point T(A), the system parameter 201 is initially set by the driver 21 according to the preset configuration information, at other time points (for example, time point T (B) and T(C)), the control program 31 can dynamically update the system parameters 201 according to practical requirements. In this way, the optimal performance of the cooperative operation between the host system 11 and the memory device 12 can be achieved.

FIG. 5 is a flowchart of a method for adjusting parameters of a memory device according to an embodiment of the present invention. Referring to FIG. 5, in step S501, the host system sends a parameter adjustment command to the memory device. The parameter adjustment command is used to instruct the memory device to adjust at least one system parameter according to the parameter adjustment command. In step S502, at least one system parameter is adjusted by the memory device according to the parameter adjustment instruction. In step S503, at least one preset operation is performed by the memory device according to the adjusted system parameters.

However, the steps in FIG. 5 have been described in detail as above, and will not be repeated here. It should be noted that each step in FIG. 5 can be implemented as a plurality of program codes or circuits, which is not limited by the present invention. In addition, the method of FIG. 5 can be used in conjunction with the above exemplary embodiments, and can also be used alone, which is not limited in the present invention.

To sum up, the embodiments of the present invention propose that the system parameters preset in the memory device can be dynamically adjusted by the host system after the memory device leaves the factory. In this way, the behavior of the memory device performing the preset operation can be optimized as the host system is in different system states, thereby improving the system performance when the host system and the memory device cooperate with each other.

Although the present invention has been disclosed above by the embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, The protection scope of the present invention shall be determined by the scope of the appended patent application.

10: Memory Storage System 11: Host system 111, 121: Connection interface 112: Processor 113: Input/output interface 12: Memory device 122: Memory Controller 123: Memory module 101: Storage area 102: System area 21: Drive 201: System parameters 31: Control program S501~S503: Steps

FIG. 1 is a schematic diagram of a memory storage system according to an embodiment of the present invention. FIG. 2 is a schematic diagram of adjusting system parameters of a memory device by sending a parameter adjustment command according to an embodiment of the present invention. FIG. 3 is a schematic diagram of adjusting system parameters of a memory device by sending a parameter adjustment command according to an embodiment of the present invention. FIG. 4 is a schematic diagram of an adjustment history of system parameters according to an embodiment of the present invention. FIG. 5 is a flowchart of a method for adjusting parameters of a memory device according to an embodiment of the present invention.

S501~S503: Steps

Claims (9)

A parameter adjustment method of a memory device is used in a host system, wherein the host system is coupled to the memory device, and the parameter adjustment method comprises: sending a parameter query command to the memory device to instruct the memory device The device returns a state information related to at least one system parameter; sends a parameter adjustment command to the memory device according to the state information to instruct the memory device to adjust the at least one system parameter according to the parameter adjustment command, wherein the at least one system parameter is adjusted according to the parameter adjustment command. A system parameter affects the behavior of the memory device to perform at least one preset operation, and the memory device does not adjust the at least one system parameter by itself without receiving the parameter adjustment command. The method for adjusting parameters of a memory device as claimed in claim 1, wherein the at least one preset operation includes at least one of a power state management operation, a background data sorting operation and a temperature control operation. The parameter adjustment method of a memory device as claimed in claim 1, wherein the status information reflects a current parameter value of a first parameter of the at least one system parameter, a default parameter value of the first parameter, the first parameter At least one of an alternate parameter value of a parameter and whether the first parameter can be adjusted. The parameter adjustment method of a memory device as claimed in claim 1, wherein sending the parameter adjustment command to the memory device comprises: detecting a system state of the host system; and sending the parameter adjustment command to the memory device according to the system state memory device to The performance of the memory device to perform the at least one preset operation in the system state of the host system is increased. The parameter adjustment method of a memory device as claimed in claim 1, wherein the step of sending the parameter adjustment command to the memory device comprises: sending a first parameter adjustment command from a driver of the host system according to a preset configuration information to the memory device to instruct the memory device to set a first parameter of the at least one system parameter to a first value, wherein the driver is used to drive the memory device. The parameter adjustment method of a memory device as claimed in claim 1, wherein the step of sending the parameter adjustment command to the memory device comprises: sending a first command by a driver of the host system according to an instruction of a control program of the host system Two parameter adjustment commands are sent to the memory device to instruct the memory device to set a first parameter of the at least one system parameter to a second value, wherein the control program is run by an operating system of the host system, and The driver is used for driving the memory device. The parameter adjustment method of a memory device as claimed in claim 6, wherein the driver of the host system sends the second parameter adjustment command to the memory device according to an instruction of the control program of the host system to instruct the memory device The step of setting the first parameter of the at least one system parameter to the second value by the physical device includes: at a first time point, the driver sends a first parameter adjustment command to the memory according to a preset configuration information memory device to instruct the memory device to set the first The parameter is set to a first value; and at a second time point later than the first time point, the driver sends the second parameter adjustment command to the memory device according to the instruction of the control program to instruct the memory device The body device sets the first parameter to the second value. The method for adjusting parameters of a memory device as claimed in claim 7, wherein the first time point includes a time point when the driver performs an initialization for the memory device. A memory storage system includes: a host system; and a memory device coupled to the host system, wherein the host system is used for sending a parameter query command to the memory device to instruct the memory device to return a state information related to at least one system parameter, the host system is further used for sending a parameter adjustment command to the memory device according to the state information, and the memory device is used for adjusting at least one system parameter according to the parameter adjustment command and Execute at least one preset operation according to the at least one system parameter, wherein the at least one system parameter affects the behavior of the memory device performing the at least one preset operation, and the memory device does not receive the parameter adjustment command The at least one system parameter is adjusted by itself.

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