CN115543219B - Method, device, equipment and medium for optimizing host IO processing - Google Patents

Abstract

The invention relates to the field of storage, and discloses a method, a device, equipment and a medium for optimizing host IO processing. The method comprises the following steps: acquiring the space size and the execution sequence of a control block required by host IO, and establishing a plurality of control block rings according to the space size and the execution sequence; filling control blocks required by the host IO to the plurality of control block rings in batches according to the execution sequence; and starting execution of the control blocks required by the host IO in response to the control blocks required by the host IO completing the first batch filling. The method disclosed by the invention can improve the use efficiency of the storage space, allow IO to balance between performance and efficiency and reduce the processing delay of IO.

Description

A method, device, equipment and medium for optimizing host IO processing

technical field

The present invention relates to the field of storage, in particular to an optimization method, device, equipment and medium for host IO processing.

Background technique

With the rise of Computational Storage (Computational Storage) technology, the Computational Storage architecture migrates the calculation of data from the host CPU to the data processing acceleration unit close to the storage unit, reducing the corresponding data movement operations, thereby achieving a greater degree of release system performance.

In the prior art, in a microcode-driven general-purpose computing acceleration chip architecture, UAA (Unified Acceleration Architecture, universal acceleration architecture) is connected to the host through a PCIe (Peripheral Component Interconnect express, high-speed serial computer expansion bus standard) interface, and UAA is divided into It consists of two parts, the control plane and the data plane. The control plane is based on the microcode driver architecture to achieve acceleration tasks, and flows between various acceleration engine modules step by step. There are work efficiency and performance problems in the main way of CP (Control Page, control page table)/CB (Control Block, control block) under the UAA architecture. Specifically, as the storage function becomes more and more complex, an IO needs The increasing trend of the number of CBs is obvious, followed by an increase in the demand for storage space of CP or CP chains, and the number of CPs and CP chains that can be accommodated at the same time by a given size of storage space on the chip shows a decreasing trend. As a result, the ability to handle parallel IO is reduced; the processing time of CB processing varies greatly, and a considerable part of CB in the CP page table and CP chain corresponding to an IO needs to perform DDR (Double Data Rate, double rate), hard disk access or complex These operations take a long time to complete. During the execution process, it is meaningless for all the pre-order CBs that have been executed to occupy the memory. On the other hand, for the subsequent CBs waiting to be executed, the more they tend to the tail The longer the waiting time for CBs, the lower the efficiency of memory usage. From the perspective of IO processing delay, according to the method of creating all CBs and then handing over the first CB to UAA for execution, the number of CBs that need to be created increases. , the delay will also increase.

Contents of the invention

In view of this, the present invention proposes an optimization method, device, equipment and medium for host IO processing. Among them, in order to improve the utilization efficiency of CP storage space and reduce the delay of IO processing, the present invention proposes a method for optimizing host IO processing, and defines a ring control page table (ring CP) mode, when the CP or CP chain uses the circular control page table mode, all the CB storage space of a host IO is organized in a circular manner, which is the control block ring (CB Ring). In the CB Ring mode, all the CBs required by an IO are dynamically generated in batches according to the order of execution and filled to the CB Ring, and then dynamically reclaimed after execution is completed until a complete IO process is processed. The storage space of CB Ring can be smaller than the total space required by the complete CB sequence corresponding to one IO, thus reducing the space occupation; after the execution of CB, the space can be reclaimed, which improves the efficiency of storage space usage; the use and generation of CB is dynamic, It only needs to generate part of the CB to start execution, which reduces the delay of host IO.

Based on the above purpose, an aspect of the embodiments of the present invention provides a method for optimizing host IO processing. The method includes the following steps: obtaining the space size and execution order of the control blocks required by the host IO, and according to the space Size and execution order to establish multiple control block rings; fill the control blocks required by the host IO in batches according to the execution order on the multiple control block rings; respond to the control blocks required by the host IO The first batch of filling is completed, and the execution of the required control blocks of the host IO is started.

In some embodiments, the method further includes: adding the judgment of the ring mode to the definition of the control page table and generating the parameter information required for the corresponding control block ring from the control page table of the ring mode, and obtaining the updated Controls the definition of page tables.

In some embodiments, adding the judgment of the ring mode in the definition of the control page table and generating the parameter information required for the corresponding control block ring from the control page table of the ring mode to obtain the updated control page table The definition includes: based on judging whether the current control page table is in ring mode and obtaining the position of the current control page table in the control page linked list, updating the definition of the header area of the control page table; in response to the fact that the current control page table is in ring mode control page table, obtain the parameter information required by the control page table of the ring mode to generate the corresponding control block ring, and set the corresponding parameter information in the additional parameter table based on the parameter information, and set the corresponding parameter information in the control page table of the ring mode The offset address of the additional parameter table is set in the table to obtain the starting position of the additional parameter table of the control page table of the ring mode.

In some embodiments, the updating the definition of the header area of the control page table based on judging whether the current control page table is in ring mode and obtaining the position of the current control page table in the control page linked list includes: based on judging that the current control page table Whether to update the attribute judgment of the control page table in ring mode; in response to the current control page table being the control page table in ring mode, obtain the position of the control page table in the ring mode in the control page linked list, and A pointer to the address of the first control block in the next control page table in the control page linked list is set in the control page table of the ring mode.

In some embodiments, the acquisition of the space size and execution order of the control blocks required by the host IO, and establishing multiple control block rings according to the space size and execution order include: based on the definition of the updated control page table Create a plurality of ring-mode control page tables based on the obtained space size and execution sequence of the control block required by the host IO, and generate corresponding multiple control block rings through the plurality of ring-mode control page tables.

In some embodiments, the acquisition of the space size and execution order of the control blocks required by the host IO, and establishing multiple control block rings according to the space size and execution order further include: at the end of the control page linked list according to the concatenation order An additional parameter table is set in the control block storage area of the control page table to store the parameter information required by the corresponding control block ring generated by the control page table in the ring mode.

In some embodiments, the additional parameter table is set in the control block storage area of the last control page table in the control page linked list according to the serial connection order, so as to store the corresponding control block ring generated by the control page table in the ring mode. The required parameter information includes: in response to the parameter volume of the additional parameter table being larger than the control block storage area of the last control page table, the control block storage area of the previous control page table is sequentially occupied in reverse order according to the serial connection sequence area.

In some embodiments, the acquisition of the space size and execution order of the control blocks required by the host IO, and the establishment of multiple control block rings according to the space size and execution order further include: setting the mode corresponding to the control page table Control block type; the state flag of the control block is established in the control block header of the control block, so as to execute different processing logics according to the state flags of different control blocks.

In some embodiments, the establishment of the state flag of the control block in the control block header of the control block, so as to execute different processing logics according to the state flags of different control blocks includes: setting the valid flag, the completion flag and the end flag of the control block, And in response to the valid flag being valid, the done flag and the end flag are present.

In some embodiments, the setting the control block type corresponding to the mode of the control page table includes: setting a loopback control block flag to indicate that the current control block is located at the end of the linear address of the storage space of the control block ring; Set an active generation control block flag to indicate that the control block behind the current control block is not generated, and in response to calling the control block with the active generation control flag, set generation for the control block with the active generation control flag The engine is used to generate the following control blocks and fill them into the corresponding control block rings.

In some embodiments, the filling the control blocks required by the host IO into the plurality of control block rings in batches according to the execution sequence includes: analyzing the command of the host IO according to the firmware for the host The IO creates the first batch of control page tables, and fills the control blocks into the control block ring corresponding to the first batch of control page tables in order of execution; the firmware is set to pass the address of the first filled control block to Corresponding to the engine's work queue for queuing.

In some embodiments, the starting the execution of the required control blocks of the host IO in response to the completion of the first batch of filling of the control blocks required by the host IO includes: in response to detecting that a control block flag is actively generated, The work queue management engine sends a notification to the firmware to complete the first batch of filling of the control block, reclaims the space corresponding to the first batch of filled control page table, and starts the execution of the control block required by the host IO.

Another aspect of the embodiments of the present invention also provides a device for optimizing host IO processing, including the following modules: a first module configured to obtain the space size and execution sequence of the control blocks required by the host IO, according to the The size of the space and the order of execution establish multiple control block rings; the second module is configured to fill the control blocks required by the host IO into the multiple control block rings in batches according to the execution order; the third A module configured to initiate execution of the host IO required control blocks in response to the host IO required control blocks completing a first batch of population.

Another aspect of the embodiments of the present invention also provides a computer device, including at least one processor; and a memory, the memory stores computer instructions that can be run on the processor, and when the instructions are executed by the processor, any of the above-mentioned methods can be implemented. step.

In yet another aspect of the embodiments of the present invention, a computer-readable storage medium is provided, and the computer-readable storage medium stores a computer program for implementing any of the above method steps when executed by a processor.

The present invention has at least the following beneficial effects: the present invention proposes an optimization method, device, device, and medium for host IO processing, wherein, the optimization method for host IO processing proposed by the present invention allows control The storage space of the block ring is smaller than the total space required for a complete control block sequence corresponding to a host IO, which reduces the storage space requirements of the control page table; the control block ring generated under the control page table in the ring mode is based on the control page The granularity of the table is the premise, so it is flexible, that is, it allows the host IO to balance between performance and efficiency; the corresponding control block under the control page table of the ring mode runs on the ring and reclaims the corresponding space after execution, improving The utilization efficiency of storage space is improved; and the control block is dynamically generated and recycled, so in a host IO, only a part of the control block needs to be generated to start serving IO, thus reducing the processing delay of IO; further, by setting the loopback The control block flag and the active generation of the control block flag allow the two aspects of CB execution and generation to be carried out simultaneously, that is, the time-consuming of CB generation is hidden in the execution process of other CBs.

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 These are some embodiments of the present invention, and those skilled in the art can obtain other embodiments according to these drawings without any creative effort.

Figure 1 shows a schematic diagram of a general computing architecture;

FIG. 2 is a schematic diagram of an embodiment of a method for processing host IO in the prior art;

FIG. 3 is a schematic diagram of the structure of a single control page table in the prior art;

FIG. 4 shows a schematic diagram of the structure of the chained control page table in the prior art;

FIG. 5 is a schematic diagram of an embodiment of a method for optimizing host IO processing provided by the present invention;

FIG. 6 is a schematic diagram of another embodiment of a method for optimizing host IO processing provided by the present invention;

FIG. 7 is a schematic diagram of active triggering and triggering scenarios in a method for optimizing host IO processing provided by the present invention;

FIG. 8 is a schematic diagram of an embodiment of a device for optimizing host IO processing provided by the present invention;

FIG. 9 is a schematic diagram of an embodiment of a computer device provided by the present invention;

FIG. 10 is a schematic diagram of an embodiment of a computer-readable storage medium provided by the present invention.

Detailed ways

Embodiments of the present invention are described below. It is to be understood, however, that the disclosed embodiments are merely examples and that other embodiments may take various alternative forms.

In addition, it should be noted that all the expressions using "first" and "second" in the embodiments of the present invention are to distinguish two entities with the same name but different parameters or parameters that are not the same. It can be seen that "first" and "second" "two" is only for the convenience of expression, and should not be understood as a limitation on the embodiments of the present invention, and the subsequent embodiments will not describe them one by one. The terms "comprises", "comprises" or any other variation thereof are intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but may also include those not expressly listed or these An element inherent in a process, method, article, or device.

One or more embodiments of the present application will be described below with reference to the accompanying drawings.

Referring to Figure 1 and Figure 2, Figure 1 shows a schematic diagram of a general computing architecture, and Figure 2 shows a schematic diagram of an embodiment of a method for processing host IO in the prior art, in the Universal Computing Architecture (UAA) Among them, the size of the control page table (CP) can be 512 bytes, 1024 bytes or 2048 bytes. Except for the CP header, data cache and original host IO command backup, the remaining space is used to store the control block CB , all CPs are placed in a continuous memory space to form a CP resource pool. In addition, in order to facilitate the management of CP resource pools, the CP granularity in a single resource pool needs to be consistent, that is, only one CP can be selected. size. The size of the CB can be 16 bytes, 32 bytes, 64 bytes and 128 bytes according to different application engine types. Therefore, the number of CBs that can be carried in a single CP is determined by both the size of the CP and the size of the CB. Therefore, in some complex application scenarios, the length of CB chains corresponding to different types of IOs is too different, and the selection of CP size will cause certain difficulties. If the size of CP is too small, it will not be able to carry long CB chains; If the degree selection is too large, it will cause a waste of CP resources.

A typical host IO process is in the UAA process. First, AEM (Acceleration Engine Manager host interface management engine) retrieves the original IO request according to a certain interface protocol, and the hardware managed by WQS (Work QueueScheduler) The event queue is used to notify the firmware. After the firmware is notified, after analyzing the IO command, it will create a CP for this IO operation, and fill the CB of the step-by-step operation into the CP as required. After completing the above steps, the firmware will pass the address of the first CB1 (4B wide) to WQS, and WQS will put the CB1 address into the work queue of the corresponding engine for queuing. When the corresponding engine starts to execute the CB1, the corresponding acceleration operation is performed according to the configuration information of the CB1. After completion, return the execution status to WQS (optional, you can notify the firmware), and prepare the next entry address of CB2, and also return to WQS to wait in the work queue of the corresponding engine, and so on. The entire transfer process is under the control of the WQS hardware, and there is no need for firmware to participate unless necessary. When the last CBX is completed, it is necessary to respond to the host and notify the firmware to reclaim the CP space.

On the basis of Fig. 1 and Fig. 2, referring to Fig. 3 and Fig. 4, Fig. 3 shows a schematic diagram of the structure of a single control page table in the prior art; Fig. 4 shows a chained control page in the prior art A schematic diagram of the structure of the table. As shown in Figure 3 and Figure 4, CPs are generally divided into ordinary CPs and chained CPs. Chained CPs are introduced on the basis of a single CP. For ordinary CPs, an 8-byte pointer is added to the definition of a single CP. The address pointer of the next chained CP; the size of the chained CP is consistent with the size of the ordinary CP. In the chained CP, except for the CP header, the remaining space is used to store the CB, and three are added in the chained CP header. 8-byte chained pointers, one pointing to the next chained CP (if any), one pointing to the previous CP, and the last pointing directly to the first normal CP (to facilitate the search for data cache, etc.), and each Its position in the entire CP chain is marked in the CB, which is convenient for the engine to quickly locate the required information when processing. However, with the development of the UAA architecture, single CP and chained CP encountered work efficiency and performance problems. Specifically, as the storage function became more and more complex, the number of CBs required by an IO increased significantly. What is most important is the increase in the demand for storage space of CP or CP chains, the number of CPs and CP chains that can be accommodated at the same time by a given size of storage space on the chip tends to decrease, resulting in a reduction in the ability to handle parallel IO; CB processing The processing time varies greatly. A considerable part of the CB in the CP page table and CP chain corresponding to an IO needs to perform DDR (Double Data Rate), hard disk access or complex calculations. These operations take a long time to complete. During the execution process , it is meaningless for all the pre-order CBs that have been executed to occupy the memory. On the other hand, for the subsequent CBs waiting to be executed, the closer to the tail CB, the longer the waiting time, which reduces the memory usage efficiency; from From the perspective of IO processing delay, if all CBs are created and then the first CB is handed over to UAA for execution, the delay will also increase due to the increase in the number of CBs that need to be created.

Based on the above objectives, the first aspect of the embodiments of the present invention proposes an embodiment of a method for optimizing host IO processing. FIG. 5 is a schematic diagram of an embodiment of a method for optimizing host IO processing provided by the present invention. As shown in Figure 5, a method for optimizing host IO processing according to an embodiment of the present invention includes the following steps:

S1. Obtain the space size and execution sequence of the control blocks required by the host IO, and establish multiple control block rings according to the space size and execution sequence;

S2. Filling the control blocks required by the host IO into the multiple control block rings in batches according to the execution order;

S3. In response to the completion of the first batch of filling of the control blocks required by the host IO, start the execution of the required control blocks of the host IO.

Based on the above objectives, the first aspect of the embodiments of the present invention proposes an embodiment of a method for optimizing host IO processing. FIG. 6 is a schematic diagram of another embodiment of a method for optimizing host IO processing provided by the present invention. As shown in Fig. 6, on the basis of ordinary CP and chained CP, a ring CP mode is proposed. For this reason, the definition of ring CP mode is added on the basis of the original CP and CB definitions. Specifically, in order to indicate whether the CP has a ring CP mode, the flag of the ring CP mode is added to the CP attribute; secondly, other parameters that may be required by the CB are dynamically generated in the ring CP mode, so in the definition of the ring CP on the CP page The definition of the additional parameter table is added; the size of the modified single CP page table can be 512 bytes, 1K bytes or 2K bytes, and it mainly consists of four parts.

1. 128-byte CP header area, including:

(1) CP attribute: the type of CP, and identifies whether the CP is located in a CP linked list, whether it is a ring CP page mode, and its position in the linked list and other attribute information;

(2) The serial number of the current CP, specified when creating the CP;

(3) Information about NVMe (Non-Volatile Memory express) queues, including 2-byte completion queue ID, 2-byte submission queue ID, and 4-byte tuning queue header information;

(4) If a CP linked list is formed, 8 bytes include the address pointer pointing to the first CB of the next chained CP;

(5) Four 64-bit time stamps, used to record key time nodes during the execution of the CP;

(6) The space of 64 bytes is reserved for firmware.

2. When the CP attribute is the ring CP page mode, include the 32 bytes of the CB Ring control header:

(1) The offset address of the additional parameter table is 4 bytes, indicating the starting address of the additional parameter table in a single CP, that is, the relative offset address starting from the address of the first CP;

(2) 28 bytes reserved space.

3. The CB storage area of several bytes corresponds to the CP length of 512B/1KB/2KB. When the CP is a ring CP page table, the length of the CB storage area is 192 bytes/704 bytes/1728 bytes respectively; When the CP is in other modes, the length of the CB storage area is 224 bytes/738 bytes/1760 bytes respectively.

4. The 64-byte data cache pointer area is used to point to the public data cache area.

5. 64 bytes of original NVMe management and IO instruction backup area, which is convenient for firmware to intervene to recover from errors when an exception occurs.

Specifically, as shown in Table 1 below:

Table 1

In chained CPs, the location of the additional parameter table is located in the CB storage area starting from the last CP. If the parameter table of the additional parameters is large in size, the CB storage area of the previous CP is occupied in reverse order from the last CP, and the remaining CB storage areas in the CP chain form a CB ring.

The modification of CB includes adding the definition of CB header flag and two new CB types. Specifically, including:

CB valid flag, 1 means legal CB, 0 means illegal CB;

CB completion flag, 1 indicates that the CB has been executed, and 0 indicates that the CB has not been executed;

Last CB flag, 1 indicates that it is the last CB in the CP or CP chain that processes an IO process, and 0 indicates that it is not the last CB.

The above CB completion flag and Last CB flag are meaningful only when the CB valid flag is 1.

In addition to the modification of the CB definition above, for example, to support the ring CP mode, the CB in the ring includes two new CB types in addition to the original CB type:

Looping CB, that is, CB Return (CB_R), indicates that the current CB is located at the end of the linear address of the CB Ring storage space, and the next CB needs to be obtained from the starting position of the CB storage space of the first CP. For the ring CP mode, That said, CB_R must be used.

The CB that actively generates CB, that is, CB Builder (CB_B), when this CB appears in the CB Ring, it means that the subsequent CB of this CB has not been generated. When WQS (Work Queue Scheduler) schedules this CB, it needs to give the CB The generation engine (implemented by software or hardware) processes this CB, generates subsequent CBs and fills them into the CB Ring. For the ring CP mode, CB_B is optional.

Wherein, FIG. 7 shows a schematic diagram of active triggering and triggering scenarios in a method for optimizing host IO processing provided by the present invention. Under the UAA framework, WQS is responsible for distributing CB, and the corresponding CB is processed by a dedicated software or hardware engine, and the processing result and the address of the next CB are returned to WQS. In the CB Ring mode, when the hardware engine processing the CB submits the next CB, it detects different CB valid flags, CB completion flags, and Last CB flags in the next CB header to complete different logics such as CB filling and CB processing. The specific processing logic is as follows:

1. WQS receives the processing result of the current CB, first judges whether the current CB is the last CB, that is, judges whether the Last CB flag of the current CB is 1. If the Last CB flag of the current CB is 1, the IO process ends and the CP is recycled; otherwise, it is judged whether the next CB of the current CB is valid.

2. To judge whether the next CB of the current CB is valid, that is, to judge whether the valid flag of the next CB of the current CB is 1. If the valid flag of the next CB of the current CB is not 1 (0), the IO process is not over at this time, but due to the lack of subsequent CBs, the firmware is notified to perform subsequent filling processing, and the firmware fills the subsequent CBs and updates CB Ring, the next CB is handed over to WQS for scheduling. This process is a passively triggered CB construction and recycling; if the valid flag of the next CB of the current CB is 1, it is judged whether the next CB of the current CB has been completed.

3. Judging whether the next CB of the current CB has been completed, that is, judging whether the completion flag of the next CB of the current CB is 1. If the completion flag of the next CB of the current CB is 1, the IO process is not over at this time, but due to the lack of subsequent CBs, the firmware is notified to perform subsequent filling processing, and the firmware fills the subsequent CBs, updates the CB Ring, and puts the next A CB is handed over to the WQS for scheduling. This process is the construction and recycling of the passively triggered CB; if the completion flag of the next CB of the current CB is not 1, it is judged whether the next CB of the current CB is CB_B.

4. Determine whether the next CB of the current CB is CB_B. If the next CB of the current CB is CB_B, WQS distributes CB_B to the CB generation engine, and the CB generation engine (SW/HW) fills the subsequent CB. After the filling is completed Reply to the completion status of WQS, and hand over the subsequent CB to WQS for scheduling. This process is the construction and recycling process of the actively triggered CB; if the next CB of the current CB is not CB_B, it will be scheduled to the corresponding engine according to the content of the CB.

When the CB engine finds that the next CB is CB_R, it needs to perform additional processing, that is, relocate to the first CB of the first CP, and submit this CB to the WQS as the next CB. The dynamic generation of CB can be realized by the firmware in the original UAA architecture. It is only necessary to change all the CB generation at one time to batch generation. In order to improve real-time performance and reduce the impact of time uncertainty in the software execution process, A dedicated hardware engine can be designed and implemented for dynamic creation and recycling of CBs.

A typical IO command processing flow working in the ring CP mode includes: first, AEM will follow a certain interface protocol to retrieve the original IO request, and notify the firmware through the hardware event queue managed by WQS. After the firmware is notified, after parsing the IO command, it will create the first batch of CPs for this IO operation, and fill the CB of the step-by-step operation into the CPs as required. After completing the above steps, the firmware will pass the address of the first CB1 (4B wide) to WQS, and WQS will put the CB1 address into the work queue of the corresponding engine for queuing. When an engine processing CB detects CB_B, it will be submitted to the CB generation engine for processing through WQS. When an engine processing CB detects a passive CB filling trigger scenario, it sends a message to the firmware through WQS, and the firmware completes the CB filling. After the firmware filling is completed, it is still handed over to WQS for distribution. When the last CBX is completed, it needs to respond to the host and notify the firmware to reclaim the CP space. The active triggering scene and the passive scene can appear successively in one IO process, or only one kind can appear.

Through the above method, the storage space of the control block ring is allowed to be smaller than the total space required for a complete control block sequence corresponding to a host IO, which reduces the storage space requirements of the control page table; the control block generated under the control page table of the ring mode The ring is premised on the granularity of the control page table, so it is flexible, that is, it allows the host IO to balance between performance and efficiency; the corresponding control block under the control page table of the ring mode runs on the ring and the control block is recycled after execution The corresponding space improves the utilization efficiency of the storage space; and the control block is dynamically generated and recycled, so in a host IO, only a part of the control block needs to be generated to start serving the IO, thus reducing the processing delay of the IO; further , by setting the loopback control block flag and the active generation control block flag, the two aspects of CB execution and generation are allowed to be synchronized, that is, the time-consuming of CB generation is hidden in the execution process of other CBs.

According to the second aspect of the embodiments of the present invention, a device for optimizing host IO processing is proposed. FIG. 8 is a schematic diagram of an embodiment of an apparatus for optimizing host IO processing provided by the present invention. As shown in FIG. 8 , a device for optimizing host IO processing provided by the present invention includes: a first module 011 configured to obtain the space size and execution sequence of the control blocks required by the host IO, according to the space size and The execution sequence establishes multiple control block rings; the second module 012 is configured to fill the control blocks required by the host IO in batches according to the execution sequence on the multiple control block rings; the third module 013, configured to initiate execution of the host IO required control blocks in response to the host IO required control blocks completing a first fill.

In some embodiments, the device configured to optimize host IO processing further includes being configured to: add a ring mode judgment in the definition of the control page table and generate a corresponding control block ring from the control page table of the ring mode The parameter information needed to get the definition of the updated control page table.

In some embodiments, the optimization device configured to process host IO further includes: configured to: update the control page based on judging whether the current control page table is in ring mode and obtaining the position of the current control page table in the control page linked list Definition of the header area of the table; in response to the current control page table being a control page table in ring mode, obtaining the parameter information required by the control page table in ring mode to generate a corresponding control block ring, and based on the parameter information Set the corresponding parameter information in the additional parameter table, and set the offset address of the additional parameter table in the control page table of the ring mode, so as to obtain the starting position of the additional parameter table of the control page table in the ring mode.

In some embodiments, the optimization device configured to process the host IO further includes: configured to: determine whether the current control page table is a ring mode and update the attribute judgment of the control page table; in response to the current control page table being a ring The control page table of the mode, obtains the position of the control page table of the ring mode in the control page linked list, and sets in the control page table of the ring mode the link pointing to the next control page table in the control page linked list Pointer to the address of the first control block.

In some embodiments, the first module 011 is further configured to: establish a plurality of ring patterns based on the definition of the updated control page table and the acquired space size and execution order of the control block required by the host IO A control page table is used to generate a plurality of corresponding control block rings through the control page tables of the plurality of ring modes.

In some embodiments, the first module 011 is further configured to: set an additional parameter table in the control block storage area of the last control page table in the control page linked list according to the concatenation order, so as to store the control page table in the ring mode The generated parameter information required by the corresponding control block ring.

In some embodiments, the first module 011 is further configured to: in response to the parameter volume of the additional parameter table being larger than the control block storage area of the last control page table, sequentially occupying forward and backward according to the sequence of concatenation The control block storage area of the previous control page table.

In some embodiments, the first module 011 is further configured to: set the control block type corresponding to the mode of the control page table; establish the status flag of the control block in the control block header of the control block, so as to Status flags perform different processing logic.

In some embodiments, the first module 011 is further configured to: set a control block valid flag, a done flag and an end flag, and in response to the valid flag being valid, the done flag and the end flag exist.

In some embodiments, the first module 011 is further configured to: set the loopback control block flag to indicate that the current control block is located at the end of the linear address of the storage space of the control block ring; set the active generation control block flag to It is used to indicate that the control block located behind the current control block has not been generated. In response to calling the control block with the active generation control flag, set the generation engine for the control block with the active generation control flag to generate the following control block and fill it into the corresponding control block ring.

In some embodiments, the second module 012 is further configured to: create the first batch of control page tables for the host IO according to the firmware's analysis of the commands of the host IO, and fill the control blocks into the first batch of control page tables in sequence according to the order of execution. On the control block ring corresponding to a batch of control page tables; the firmware is set to pass the address of the first filled control block to the work queue of the corresponding engine for queuing and waiting.

In some embodiments, the third module 013 is further configured to: in response to detecting that the control block flag is actively generated, send a notification to the firmware through the work queue management engine to complete the first batch of filling of the control block, and send the first batch of filling The space corresponding to the control page table is reclaimed, and the execution of the control block required by the host IO is started.

Based on the above purpose, a third aspect of the embodiments of the present invention provides a computer device, and FIG. 9 is a schematic diagram of an embodiment of a computer device provided by the present invention. As shown in Fig. 9, the embodiment of a kind of computer equipment provided by the present invention comprises the following modules: at least one processor 021; When 023 is executed by the processor 021, the steps of the method described above are realized.

The present invention also provides a computer-readable storage medium. FIG. 10 is a schematic diagram of an embodiment of a computer-readable storage medium provided by the present invention. As shown in FIG. 10 , a computer-readable storage medium 031 stores a computer program 032 for executing the above method when executed by a processor.

Finally, it should be noted that those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be realized through computer programs to instruct relevant hardware to complete, and the program of the method for setting system parameters can be stored in a computer-readable When the program is executed, the program may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium of the program may be a magnetic disk, an optical disk, a read-only memory (ROM) or a random access memory (RAM). The foregoing computer program embodiments can achieve the same or similar effects as any of the foregoing method embodiments corresponding thereto.

In addition, the method disclosed according to the embodiments of the present invention can also be implemented as a computer program executed by a processor, and the computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the above functions defined in the methods disclosed in the embodiments of the present invention are executed.

In addition, the above-mentioned method steps and system units can also be realized by using a controller and a computer-readable storage medium for storing a computer program for enabling the controller to realize the functions of the above-mentioned steps or units.

Those of skill would also appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described generally in terms of their functionality. Whether such functionality is implemented as software or as hardware depends upon the particular application and design constraints imposed on the overall system. Those skilled in the art may implement the functions in various ways for each specific application, but such implementation decisions should not be interpreted as causing a departure from the scope disclosed in the embodiments of the present invention.

In one or more exemplary designs, functions may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. Storage media may be any available media that can be accessed by a general purpose or special purpose computer. By way of example and not limitation, the computer readable medium may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage device, magnetic disk storage device or other magnetic storage device, or may be used to carry or store instructions in Any other medium that can be accessed by a general purpose or special purpose computer or a general purpose or special purpose processor, and the required program code or data structure. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial Cable, fiber optic cable, twisted pair, DOL, or wireless technologies such as infrared, radio, and microwave are included in the definition of media. Disk and disc, as used herein, includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers . Combinations of the above should also be included within the scope of computer-readable media.

The above are the exemplary embodiments disclosed in the present invention, but it should be noted that various changes and modifications can be made without departing from the scope of the disclosed embodiments of the present invention defined in the claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. In addition, although the elements disclosed in the embodiments of the present invention may be described or required in an individual form, they may also be understood as a plurality unless explicitly limited to a singular number.

It should be understood that as used herein, the singular form "a" and "an" are intended to include the plural forms as well, unless the context clearly supports an exception. It should also be understood that "and/or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.

The serial numbers of the embodiments disclosed in the above-mentioned embodiments of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.

Those of ordinary skill in the art can understand that all or part of the steps for implementing the above-mentioned embodiments can be completed by hardware, or can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. The above-mentioned The storage medium may be a read-only memory, a magnetic disk or an optical disk, and the like.

Those of ordinary skill in the art should understand that: the discussion of any of the above embodiments is exemplary only, and is not intended to imply that the disclosed scope (including claims) of the embodiments of the present invention is limited to these examples; under the idea of the embodiments of the present invention , the technical features in the above embodiments or different embodiments can also be combined, and there are many other changes in different aspects of the above embodiments of the present invention, which are not provided in details for the sake of brevity. Therefore, within the spirit and principle of the embodiments of the present invention, any omissions, modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the embodiments of the present invention.

Claims (13)

1. An optimization method for host IO processing, characterized in that, comprising: In the definition of the control page table, add the judgment of the ring mode and generate the parameter information required for the corresponding control block ring by the control page table of the ring mode, and obtain the definition of the updated control page table; Obtain the space size and execution order of the control blocks required by the host IO, and establish multiple control block rings according to the space size and execution order; fill the control blocks required by the host IO in batches according to the execution order on the multiple control block rings; initiating execution of the required control blocks of the host 10 in response to the host 10 required control blocks completing the first batch of populations, Wherein, obtaining the space size and execution order of the control blocks required by the host IO, and establishing multiple control block rings according to the space size and execution order include: Set the type of control block corresponding to the mode of the control page table; The state flag of the control block is established in the control block header of the control block, so as to execute different processing logics according to the state flags of different control blocks. 2. The method according to claim 1, characterized in that adding the judgment of the ring mode in the definition of the control page table and generating the required parameter information for the corresponding control block ring by the control page table of the ring mode , the definition of the updated control page table includes: Updating the definition of the header area of the control page table based on judging whether the current control page table is in ring mode and obtaining the position of the current control page table in the control page linked list; In response to the fact that the current control page table is a control page table in ring mode, acquire the parameter information required by the control page table in ring mode to generate a corresponding control block ring, and set the corresponding parameter information in the additional parameter table based on the parameter information parameter information, and set an additional parameter table offset address in the control page table of the ring mode, so as to obtain the starting position of the additional parameter table of the control page table of the ring mode. 3. The method according to claim 2, wherein the method of updating the header area of the control page table based on judging whether the current control page table is in ring mode and obtaining the position of the current control page table in the control page linked list Definitions include: Judging based on judging whether the current control page table is an attribute of the ring mode update control page table; Responding to the fact that the current control page table is a control page table in ring mode, obtain the position of the control page table in ring mode in the control page linked list, and set a pointer to the A pointer to the address of the first control block of the next control page table in the control page linked list. 4. The method according to claim 1, wherein the acquisition of the space size and the execution order of the control blocks required by the host IO, and establishing a plurality of control block rings according to the space size and the execution order also includes: Based on the definition of the updated control page table and the acquired space size and execution order of the control block required by the host IO, multiple ring-mode control page tables are established, through the multiple ring-mode control page tables A plurality of corresponding control block rings are generated. 5. The method according to claim 4, wherein said obtaining the space size and the execution order of the control blocks required by the host IO, and establishing a plurality of control block rings according to the space size and the execution order also includes: An additional parameter table is set in the control block storage area of the last control page table in the control page linked list according to the serial connection order, so as to store the parameter information required by the corresponding control block ring generated by the control page table in the ring mode. 6. The method according to claim 5, wherein the additional parameter table is set in the control block storage area of the last control page table of the control page linked list according to the serial connection order, so as to store the control by the ring mode. The parameter information required for the corresponding control block ring generated by the page table includes: In response to the fact that the parameter volume of the additional parameter table is larger than the control block storage area of the last control page table, the control block storage area of the previous control page table is sequentially occupied forward and backward according to the concatenation sequence. 7. The method according to claim 1, wherein said setting up the state flag of the control block in the control block header of the control block, so as to execute different processing logics according to the state flags of different control blocks comprises: A control block valid flag, a done flag and an end flag are set and present in response to the valid flag being valid. 8. The method according to claim 7, wherein said setting the control block type corresponding to the mode of the control page table comprises: Set the loopback control block flag to indicate that the current control block is located at the end of the linear address of the storage space of the control block ring; Set an active generation control block flag to indicate that the control block behind the current control block is not generated, and in response to calling the control block with the active generation control flag, set generation for the control block with the active generation control flag The engine is used to generate the following control blocks and fill them into the corresponding control block rings. 9. The method according to claim 8, wherein the filling the control blocks required by the host IO into the multiple control block rings in batches according to the execution order comprises: Create the first batch of control page tables for the host IO according to the firmware's analysis of the commands of the host IO, and fill the control blocks into the control block rings corresponding to the first batch of control page tables in order of execution; The firmware is set to pass the address of the first filled control block to the work queue of the corresponding engine for queuing. 10. The method according to claim 9, wherein in response to the completion of the first batch of filling of the control blocks required by the host IO, enabling the execution of the required control blocks of the host IO comprises: In response to detecting that the control block flag is actively generated, the work queue management engine sends a notification to the firmware to complete the first filling of the control block, reclaims the space corresponding to the first filling of the control page table, and starts the host Execution of IO required control blocks. 11. An optimization device for host IO processing, characterized in that, comprising: The first module is configured to obtain the space size and execution order of the control blocks required by the host IO, and establish multiple control block rings according to the space size and execution order; The second module is configured to fill the control blocks required by the host IO into the plurality of control block rings in batches according to the execution sequence; The third module is configured to start the execution of the required control blocks of the host IO in response to the completion of the first batch of filling of the control blocks required by the host IO; The fourth module is configured to add the judgment of the ring mode in the definition of the control page table and generate the parameter information required for the corresponding control block ring from the control page table of the ring mode, so as to obtain the updated definition of the control page table ; Wherein, the first module is further configured to: Set the type of control block corresponding to the mode of the control page table; The state flag of the control block is established in the control block header of the control block, so as to execute different processing logics according to the state flags of different control blocks. 12. A computer device, characterized in that it comprises: at least one processor; and A memory, the memory stores computer instructions operable on the processor, and when the instructions are executed by the processor, the steps of the method according to any one of claims 1-10 are implemented. 13. A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, the steps of the method according to any one of claims 1-10 are implemented.

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