CN107247673A - A kind of memory allocation method and device - Google Patents

Abstract

The present invention discloses a method and device for allocating memory, wherein the method includes: obtaining the first memory amount set for each system member in a storage system based on the software architecture of each system member in advance, wherein the software architecture of each system member is the same ; collect the hardware information of each of the system members, and calculate the second memory quantity of each of the system members based on the hardware information; combine the first memory quantity of each of the system members with the first memory quantity of the system member The two memory quantities are added together to obtain the total memory quantity that needs to be allocated to each of the system members. The memory allocation method disclosed by the invention makes the total amount of memory allocated by the storage system to each system member substantially equal to the total amount of memory actually needed, and solves the technical problem of how the storage system allocates a reasonable amount of memory to each system member.

Description

A memory allocation method and device

technical field

The invention relates to the field of memory allocation, in particular to a memory allocation method and device.

Background technique

During the startup process of the storage system, each system member needs to be initialized. During this process, the storage system will allocate memory for the system member so that the system can access it later. If there are multiple storage hardware platforms, the storage system needs to allocate memory for each hardware platform, and the memory required by each hardware platform may be different. For example, different storage hardware platforms can be inserted with different numbers of HBA cards, resulting in The memory required during the HBA card initialization process varies with different hardware platforms.

Before the storage system initialization process, it is necessary to reserve a certain amount of memory for each system member for the member initialization process. Once the reservation is successful, the memory required for the initialization of this member must be within the reserved memory range, which can ensure Avoid situations where a member reserves unlimited memory.

The memory allocation method in the prior art is to reserve a common memreq (memory require) configuration value in a set of software architecture for configuring the amount of memory required by all system members during initialization. Since all hardware platforms will share the value of this common memreq, the value of this memreq must be the maximum amount of memory required by system members as the value of memreq. For example, the storage system has three hardware platforms that share the memreq value. The first hardware platform requires a memreq value of 10, the second hardware platform requires a memreq value of 20, and the third hardware platform requires a memreq value of 30. , then the value of the common memreq of this storage system needs to take the maximum value of 30 among the three platforms.

However, when using the above method to initialize memory allocation for system members, more memory will be reserved for hardware platforms with smaller memreq values, and correspondingly, less memory will be used for system cache. Resulting in poor system storage performance.

To sum up, how the storage system allocates a reasonable amount of memory for each system member is a technical problem that those skilled in the art need to solve.

Contents of the invention

The technical problem to be solved by the present invention is to provide a memory allocation method, which can allocate a reasonable amount of memory to each system member. The invention also provides a memory allocation device.

In order to solve the above technical problems, the present invention provides a memory allocation method, comprising:

Acquiring the first amount of memory pre-set for each system member in the storage system based on its software architecture, wherein each of the system members has the same software architecture;

collecting hardware information of each of the system members, and calculating a second memory quantity of each of the system members based on the hardware information;

The first memory quantity of each system member is added to the second memory quantity of the system member to obtain the total memory quantity that needs to be allocated to each system member.

Preferably, the collecting hardware information of each system member includes:

The hardware information of each system member and the hardware information of external devices are collected.

Preferably, the calculation of the second memory quantity of each of the system members based on the hardware information includes:

Calculate the first memory value corresponding to its own hardware information based on the size of each system member's own RAM; calculate the second memory value corresponding to the hardware information of the external device based on the type and quantity of each system member's external device; The first memory value of the system member is added to the second memory value of the system member to obtain the second memory quantity of each system member.

Preferably, after obtaining the total amount of memory that needs to be allocated to each of the system members, it also includes:

Judging whether the total amount of memory of each system member is greater than a preset maximum amount of memory, and reporting an error if greater.

Preferably, after obtaining the total amount of memory that needs to be allocated to each of the system members, it also includes:

The total amount of memory for each of the system members is stored.

The present invention also provides a memory allocation device, including:

An acquisition module, configured to acquire the first memory quantity pre-set for each system member in the storage system based on its software architecture;

A collection module, configured to collect hardware information of each system member;

A calculation module, configured to calculate the second memory quantity of each of the system members based on the hardware information; add the first memory quantity of each of the system members to the second memory quantity of the system member to obtain the required The total amount of memory allocated separately to each described system member.

Preferably, the collection module includes:

The collecting unit is used to collect the hardware information of each system member itself and the hardware information of the external device.

Preferably, the calculation module includes:

A calculation unit, configured to calculate the first memory value corresponding to the hardware information of each system member based on the size of its own RAM; calculate the second memory value corresponding to the hardware information of the external device based on the type and quantity of the external device of each system member value; add the first memory value of each system member to the second memory value of the system member to obtain the second memory quantity of each system member.

Preferably, it also includes:

The judging module is used for judging whether the total amount of memory of each system member is greater than a preset maximum amount of memory after the calculation module obtains the total amount of memory of each system member, and reporting an error if it is greater.

Preferably, it also includes:

A storage module, configured to store the total memory quantity of each system member after the calculation module obtains the total memory quantity of each system member.

The memory allocation method provided by the present invention divides the total amount of memory required by each system member in the storage system into two parts, the first part is the first memory amount corresponding to the unified software architecture of each system member, and the second part is based on each The second memory amount of the system member calculated from the hardware information of each system member; add the first memory amount corresponding to each system member and the second memory amount of the system member, and obtain the number that needs to be allocated to each system member The total amount of memory for each. Through the memory allocation method provided by the present invention, the total amount of memory actually required by each system member is obtained by using the unified software architecture and respective hardware information of each system member, so that the total amount of memory allocated by the storage system for each system member The quantity is basically equal to the total amount of memory actually required by it, so as to avoid the situation in the prior art that the total amount of memory actually required by each system member is too different from the total amount of memory allocated to it by the storage system. The memory allocation method provided by the invention effectively solves the technical problem of how the storage system allocates a reasonable amount of memory for each system member. The memory allocation device provided by the present invention also correspondingly solves the technical problem of how to allocate a reasonable amount of memory for each system member.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is the flowchart of the memory allocation method provided by a specific embodiment of the present invention;

FIG. 2 is a flowchart of a memory allocation method provided by another embodiment of the present invention;

3 is a schematic structural diagram of a memory allocation device provided in a specific embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a memory allocation device provided by another specific embodiment of the present invention.

detailed description

The core of the invention is to provide a memory allocation method, which solves the technical problem of how to allocate a reasonable amount of memory for each system member. Another core of the present invention is to provide a memory allocation device.

In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to FIG. 1 . FIG. 1 is a flowchart of a memory allocation method provided by a specific embodiment of the present invention. In corresponding to the first specific implementation manner, the memory allocation method provided by the embodiment of the present invention may include the following steps:

Step S1: Acquiring the first memory quantity pre-set for each system member in the storage system based on its software architecture, where the software architecture of each system member is the same.

Since the software architecture of each system member is the same, the first memory quantity corresponding to the software architecture of each system member is the same. The software architecture of each system member and the corresponding first memory quantity can be pre-set by the staff according to the actual needs. Specifically, the first memory quantity can be given by the staff of the specific software module according to the set software architecture: The specific parts of the software module include PLFC, PLISCSI, PLSA, PLPA, etc. The staff determines the memory value to be allocated for each part, and then sums up the memory values to be allocated for each part to obtain the required memory value for the software module. The allocated memory value, and determine that the memory value is the first memory quantity corresponding to the system member software architecture. For example, the amount of reserved memory for PLISCSI is two memory pages, that is, 8k. The staff counts the number of all corresponding parts of PLISCSI in this software module, and multiplies the counted amount by 8k to get the amount of reserved memory for PLISCSI. The calculation method of the reserved memory of other parts is the same as this principle; the staff adds up the reserved memory quantity of each part in the software module to obtain the first memory quantity set for the software architecture.

Step S2: Collect hardware information of each system member, and calculate the second memory quantity of each system member based on the hardware information.

Step S3: adding the first memory quantity of each system member and the second memory quantity of the system member to obtain the total memory quantity to be allocated to each system member.

In this embodiment, the present invention uses the unified software architecture of each system member and hardware information other than the software architecture to divide the total amount of memory required by each system member into: the first memory amount corresponding to the software architecture and the first memory amount corresponding to the software architecture The second memory quantity corresponding to the hardware part; the total quantity of memory required by each system member is obtained by adding the obtained first memory quantity and the calculated second memory quantity. The present invention utilizes the unified software architecture and different hardware parts of each system member to obtain the total amount of memory of each system member, which is basically equal to the actual amount of memory required, and avoids the total amount of memory actually required by each system member The situation where the total amount of memory allocated for it is too different from the theoretical one. The memory allocation method provided by the invention solves the technical problem of how the storage system allocates a reasonable amount of memory for each system member.

It should be noted that the sequence of the two steps of step S1 and step S2 is not limited here. Step S1 may be performed first, or step S2 may be performed first, or both steps may be performed simultaneously.

In a memory allocation method provided by an embodiment of the present invention, collecting hardware information of each system member may include: collecting hardware information of each system member itself and hardware information of its external devices.

When collecting the hardware information of each system member, for those system members without external devices, it is only necessary to collect the hardware information of the system members themselves; for those system members with external devices, it is not only necessary to collect the hardware information of the system members themselves Information, but also collect the hardware information of the external devices of the system members. This makes the total amount of memory allocated to system members with external devices more accurate.

In a memory allocation method provided by an embodiment of the present invention, calculating the second memory amount of each system member based on hardware information may include:

Calculate the first memory value corresponding to its own hardware information based on the size of each system member's own RAM; calculate the second memory value corresponding to the hardware information of the external device based on the type and quantity of each system member's external device; The first memory value is added to the second memory value of the system member to obtain the second memory quantity of each system member.

Since the hardware information of a system member is basically determined by the size of its RAM, here the first memory value corresponding to the hardware information of the system member is mainly calculated according to the size of the system member's own RAM.

When calculating the corresponding first memory value according to the RAM size of the system member itself, a ratio can be set by the staff according to actual needs, so that the product of the RAM size and the ratio can be used as the corresponding first memory value. Specifically, the following methods can be employed. For RAM, the reserved memory corresponding to 8G memory RAM is 10988 pages, and each page is 4k, so the reserved memory corresponding to 8G memory RAM is 42.9M, and then calculate the value of this part according to this corresponding relationship. For example, the RAM size of the system member itself is 4G. Since 4G is half of 8G, the reserved memory corresponding to 4G memory RAM is half of 42.9M, that is, 21.45M. Of course, according to the corresponding relationship between 8G memory RAM and 42.9M reserved memory, other corresponding relationships can also be extended. The corresponding first memory value.

When calculating the second memory value corresponding to the hardware information of the external device of the system member, generally according to the type of the external device, first determine the corresponding memory value of each type of external device; and then determine the number of each type of external device; Multiply the memory value of each external device of the same type by the number of external devices of this type to obtain the memory value corresponding to each type of external device; finally, add the memory values corresponding to different types of external devices to obtain The second memory value corresponding to the external device of the system member. Here, the calculation of the reserved memory value of an external HBA card as an external device is used as an example for illustration. First, determine the type of external HBA card of the system member. After knowing the type of external HBA card, you can check the reserved memory value corresponding to each HBA card of this type; then determine the number of each type of HBA card; Multiply the reserved memory value corresponding to each type of HBA card by the number of each type of HBA card to obtain the reserved memory value corresponding to each type of HBA card; finally, add the reserved memory values corresponding to different types of HBA cards, Then, the second memory quantity corresponding to the hardware information of the external device of the system member is obtained. The calculation method of the second memory value corresponding to the hardware information of other external devices is the same as this principle.

In a memory allocation method provided by an embodiment of the present invention, after obtaining the total amount of memory that needs to be allocated to each system member, it may further include:

Determine whether the total amount of memory of each system member is greater than the preset maximum amount of memory, and if so, perform an error reporting operation.

Among them, the maximum amount of memory can be set by the staff according to actual needs; in the above judgment operation, if the total amount of memory of each system member is not greater than the preset maximum amount of memory, that is, if not, each The total amount of memory of a system member is sent to the system member. Of course, other operations can also be performed, such as storing the total amount of memory and so on. In addition, the error reporting operation can specifically send corresponding information to the designated terminal corresponding to the staff, or instruct the display screen to display the corresponding information, etc., and the information corresponding to the above error reporting operation can include the system whose total memory is greater than the maximum memory The number of members and the total number of memory, etc., of course, the above technical solutions can be set according to actual needs, all within the protection scope of the present invention.

The advantage of adding the above judgment operation is that it can prevent the total amount of memory required by system members from being greater than the maximum amount of memory set in advance according to actual needs, and can solve illegal problems such as unlimited memory allocation for a system member.

In a memory allocation method provided by an embodiment of the present invention, after obtaining the total amount of memory that needs to be allocated to each system member, it may further include:

Stores the total amount of memory for each system member.

The advantage of adding the above storage operations is that when it is necessary to repeatedly know the total amount of memory required by system members, it can be directly obtained from the stored data, thereby saving the process of calculating the total amount of memory.

In practical applications, any one of the above judgment operation or storage operation can be added; both operations can also be added, and the order of adding the two operations is not limited here, and the preferred order of addition is described in the following embodiments.

Please refer to FIG. 2 . FIG. 2 is a flowchart of a memory allocation method provided by another specific embodiment of the present invention. In this specific implementation, a judgment operation and a storage operation are added, and the two are combined: after obtaining the total amount of memory of each system member, step S4 is first performed: judging whether the total amount of memory of each system member is greater than the preset maximum memory value, if yes, execute step S6: report an error; if no, execute step S5: store the total amount of memory of each system member. This embodiment can not only allocate a reasonable total amount of memory for the system members; but also avoid the situation of unlimited memory allocation for the system members; it can also save the calculation process when it is necessary to repeatedly know the amount of memory required by the system members .

The present invention also provides a memory allocation device, which has all the beneficial effects of the method of the present invention. Please refer to FIG. 3. FIG. 3 is a schematic structural diagram of a memory allocation device provided in a specific embodiment of the present invention, which may include the following modules:

The acquiring module A1 is configured to acquire the first memory quantity pre-set for each system member in the storage system based on its software architecture.

The collection module A2 is used to collect hardware information of each system member.

The calculation module A3 is used to calculate the second memory quantity of each system member based on the hardware information collected by the collection module A2; add the first memory quantity of each system member and the second memory quantity of the system member to obtain the required The total amount of memory allocated to each system member separately.

In a memory allocation device provided by an embodiment of the present invention, the acquisition module may include:

The collection unit is used to collect the hardware information of each system member itself and the hardware information of external devices.

In a memory allocation device provided by an embodiment of the present invention, the calculation module may include:

The calculation unit is used to calculate the first memory value corresponding to the hardware information of each system member based on the size of its own RAM; calculate the second memory value corresponding to the hardware information of the external device based on the type and quantity of the external device of each system member; The first memory value of each system member is added to the second memory value of the system member to obtain the second memory quantity of each system member.

In a memory allocation device provided in an embodiment of the present invention, it may also include:

The judging module is used for judging whether the total amount of memory of each system member is greater than the preset maximum amount of memory after the calculation module obtains the total amount of memory, and reporting an error if it is greater.

In a memory allocation device provided in an embodiment of the present invention, it may also include:

The storage module is used to store the total amount of memory of each system member after the calculation module obtains the total amount of memory.

In the actual device application, any one of the above judgment modules or storage modules can be added; both modules can also be added, and the order of adding the two modules is not limited here, and the preferred order of addition is as follows:

Please refer to FIG. 4 . FIG. 4 is a schematic structural diagram of another specific embodiment of the present invention. In this specific embodiment, the judging module A4 and the storage module A5 are added, and the two are combined: after the computing module obtains the total amount of memory, the judging module first judges whether the total amount of memory of each system member is greater than the preset If yes, an error will be reported; if not, the total amount of memory will be sent to the storage module, and the storage module will store the total amount of memory.

For the description of the relevant parts of the memory allocation device provided by the embodiment of the present invention, please refer to the detailed description of the corresponding part of the memory allocation method provided by the embodiment of the present invention, which will not be repeated here.

In this paper, specific examples are used to illustrate the principle and implementation of the present invention, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (10)

1. A memory allocation method, characterized in that, comprising: Acquiring the first amount of memory pre-set for each system member in the storage system based on its software architecture, wherein each of the system members has the same software architecture; collecting hardware information of each of the system members, and calculating a second memory quantity of each of the system members based on the hardware information; The first memory quantity of each system member is added to the second memory quantity of the system member to obtain the total memory quantity that needs to be allocated to each system member. 2. The method according to claim 1, wherein the collecting hardware information of each of the system members comprises: The hardware information of each system member and the hardware information of external devices are collected. 3. The method according to claim 2, wherein the calculating the second memory quantity of each of the system members based on the hardware information comprises: Calculate the first memory value corresponding to its own hardware information based on the size of each said system member's own RAM; calculate the second memory value corresponding to the external device hardware information based on the type and quantity of each said system member's external device; The first memory value of the system member is added to the second memory value of the system member to obtain the second memory quantity of each system member. 4. The method according to any one of claims 1 to 3, characterized in that, after obtaining the total amount of memory that needs to be allocated to each of the system members, it also includes: Judging whether the total amount of memory of each system member is greater than a preset maximum amount of memory, and reporting an error if greater. 5. The method according to any one of claims 1 to 3, characterized in that, after obtaining the total amount of memory that needs to be allocated to each of the system members, it also includes: The total amount of memory for each of the system members is stored. 6. A memory allocation device, characterized in that, comprising: An acquisition module, configured to acquire the first memory quantity pre-set for each system member in the storage system based on its software architecture; A collection module, configured to collect hardware information of each system member; A calculation module, configured to calculate the second memory quantity of each of the system members based on the hardware information; add the first memory quantity of each of the system members to the second memory quantity of the system member to obtain the required The total amount of memory allocated separately to each described system member. 7. The device according to claim 6, wherein the acquisition module comprises: The collecting unit is used to collect the hardware information of each system member itself and the hardware information of the external device. 8. The device according to claim 7, wherein the calculation module comprises: A calculation unit, configured to calculate the first memory value corresponding to the hardware information of each system member based on the size of its own RAM; calculate the second memory value corresponding to the hardware information of the external device based on the type and quantity of the external device of each system member value; add the first memory value of each system member to the second memory value of the system member to obtain the second memory quantity of each system member. 9. The device according to any one of claims 6 to 8, further comprising: The judging module is used for judging whether the total amount of memory of each system member is greater than a preset maximum amount of memory after the calculation module obtains the total amount of memory of each system member, and reporting an error if it is greater. 10. The device according to any one of claims 6 to 8, further comprising: A storage module, configured to store the total memory quantity of each system member after the calculation module obtains the total memory quantity of each system member.