CN112181682A - Data transmission control system and method under multi-task concurrent scene - Google Patents
Data transmission control system and method under multi-task concurrent scene Download PDFInfo
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- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
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Abstract
The invention relates to a data transmission control system and a method thereof under a multi-task concurrent scene, wherein the system comprises a backup storage unit and a plurality of clients, and a data transmission module of each client is used for establishing a data transmission channel for connecting the client and the backup storage unit so as to transmit data to be transmitted to the backup storage unit; the data storage module of the backup storage unit comprises a plurality of flash memory areas and a shared memory area, the flash memory areas are respectively and independently connected to different data transmission channels, the shared memory area is connected to the data transmission channels, and the transmission control module root of the backup storage unit is used for distributing and connecting the data transmission channels to the flash memory areas or the shared memory area, monitoring the data flow of the data transmission channels and controlling the data transmission channels connected with the shared memory area to perform data transmission in a grouped time interval mode. Compared with the prior art, the method can effectively improve the high efficiency and the fluency of data transmission in a multi-task concurrent scene.
Description
Technical Field
The invention relates to the technical field of data backup, in particular to a data transmission control system and a data transmission control method under a multi-task concurrent scene.
Background
With the rapid development of computer technology, most of enterprises use computers to operate their core services, and the data generated thereby also becomes the core wealth of the enterprise, and how to effectively protect the core data also becomes the focus of great challenges and concerns for the enterprises.
With the continuous increase of the scale of enterprise data, the data volume and data sources of enterprise data which need backup protection are also continuously increased, the data of different sources need backup protection every day, each data source can correspond to a plurality of backup tasks, the different backup tasks often need to be executed simultaneously, because the resource configuration of the backup storage system has an upper limit, such as the memory size of the system, the read-write speed of a system disk, and the like, and the bandwidth connected to the backup storage system also has an upper limit, the data transmission of the concurrent tasks is limited by the system resources, when the multiple tasks are transmitted simultaneously, the situation of contending for the system resources can also occur, if the contention for the system resources is not limited at all, the multiple tasks occupy a part of the resources, and then wait for the other tasks to release the resources, to continue the task, and eventually, the data transmission of the entire system falls into a state where the data transmission cannot be continued. Therefore, in order to ensure efficient and smooth data transmission to the backup storage system, an efficient data transmission control system and method are needed for coordination.
Disclosure of Invention
The present invention provides a data transmission control system and method in a multitask concurrent scenario to overcome the above-mentioned drawbacks of the prior art, so as to improve efficiency and smoothness of multitask concurrent data transmission.
The purpose of the invention can be realized by the following technical scheme: a data transmission control system under a multi-task concurrent scene comprises a plurality of clients corresponding to different data sources and connected with a backup storage unit, wherein each client comprises a data reading module and a data transmission module;
the backup storage unit comprises a data storage module and a transmission control module, wherein the data storage module comprises a plurality of fast memory areas and a shared memory area, the fast memory areas are respectively and independently connected to different data transmission channels, the shared memory area is connected to the data transmission channels, the transmission control module distributes and connects the data transmission channels to the fast memory areas or the shared memory area according to the task sequence corresponding to the data transmission channels, and the transmission control module is used for monitoring the data flow of the data transmission channels and controlling the data transmission channels connected with the shared memory area to perform data transmission in a time-sharing mode.
Further, the data transmission channel is specifically a TCP transmission channel.
Further, a TCP listening port is disposed in the transmission control module.
A data transmission control method under a multitask concurrency scene comprises the following steps:
s1, the multiple clients respectively create corresponding data transmission tasks and sequence the multiple data transmission tasks according to the sequence of creation time;
s2, the multiple clients respectively establish data transmission channels corresponding to the respective data transmission tasks;
s3, according to the sequence of the data transmission tasks, the transmission control module correspondingly distributes and connects the data transmission channels sequenced into the first N data transmission tasks to each fast memory area in the data storage module, so that one fast memory area is independently connected with one data transmission channel, and the data transmission channels of the rest data transmission tasks are simultaneously connected to the shared memory area in the data storage module;
s4, the transmission control module respectively controls a plurality of data transmission channels correspondingly connected with the fast memory area to simultaneously transmit data, and controls a plurality of data transmission channels connected with the shared memory area to transmit data in a grouped time interval mode;
and S5, the transmission control module monitors the data traffic of the data transmission channel correspondingly connected with the fast memory area, and if the data traffic of a certain data transmission channel is monitored to be 0, the fast memory area connected with the data transmission channel is released to distribute and connect to the data transmission channel with the highest sequencing in the shared memory area until all the data transmission channels complete respective data transmission tasks.
Further, in step S2, the multiple clients specifically use their respective data transmission modules to establish data transmission channels corresponding to their respective data transmission tasks in a TCP connection manner.
Further, in step S3, N is 5.
Further, the step S4 specifically includes the following steps:
s41, the transmission control module controls a plurality of data transmission channels correspondingly connected with the flash memory area to simultaneously transmit data, at the moment, the data reading modules of the clients to which the data transmission channels belong respectively acquire data to be transmitted from the databases of the respective clients and transmit the data to be transmitted to the corresponding data transmission channels;
s42, the transmission control module groups the data transmission channels connected with the shared memory area according to the data transmission task sequence;
and S43, the transmission control module controls each group to circularly transmit data according to the grouping sequence and the preset data transmission time, at the moment, the data reading module of the client to which each data transmission channel in the group belongs respectively obtains the data to be transmitted from the database of each client, and transmits the data to be transmitted to the corresponding data transmission channel.
Further, the number of data transmission channels included in each packet in step S42 is less than or equal to M.
Further, in step S42, M is 5.
Further, the data transmission time preset in the step S43 is 10S.
Compared with the prior art, the invention has the following advantages:
firstly, the invention divides the memory of the backup storage unit into a fast memory area and a shared memory area, under the multi-task concurrent scene, the data transmission channels of the tasks in front of the sequence are respectively and independently connected with the fast memory area, the data transmission channels of the following residual tasks are commonly connected with the shared memory area, so that the data transmission tasks in front of the sequence can monopolize one fast memory area for data transmission without being influenced by the resource preemption of the shared memory area, in addition, the invention monitors the data flow of the data transmission channels, when the data transmission channels distributed to the fast memory area finish the data transmission, the fast memory area can be immediately released and distributed to one data transmission channel in the shared memory area, thereby ensuring that the following data transmission channels can monopolize one fast memory area for data transmission, thereby fully utilizing the system bandwidth, the effect of high-efficiency and smooth data transmission is achieved.
The data transmission channels connected with the shared memory area are subjected to data transmission in a grouped time-interval mode, so that the situation of resource occupation in a short time of the shared memory area can be effectively avoided, the data transmission in each data transmission channel is ensured to be carried out, the fairness is ensured, the situation of task blocking is avoided, and the aim of smooth data transmission is further fulfilled.
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FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic flow diagram of the process of the present invention;
FIG. 3 is a diagram illustrating an initial state of concurrent task data transmission in an embodiment;
fig. 4 is a schematic diagram illustrating a state after the data transmission channel 1 completes data transmission in the concurrent task in the embodiment;
the notation in the figure is: 1. the system comprises a backup storage unit 11, a data storage module 12, a transmission control module 110, a fast memory area 111, a shared memory area 2, a client 21, a data reading module 22, a data transmission module 221, a data transmission channel 23 and a database.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Examples
As shown in fig. 1, a data transmission control system under a multitask concurrency scenario includes a plurality of clients 2 connected to a backup storage unit 1 and corresponding to different data sources, where the clients 2 include a data reading module 21 and a data transmission module 22, the data reading module 21 is configured to obtain data to be transmitted from a database 23 of the client 2, and the data transmission module 22 is configured to establish a data transmission channel 221 connecting the client 2 and the backup storage unit 1, and transmit the data to be transmitted to the backup storage unit 1 through the data transmission channel 221;
the backup storage unit 1 includes a data storage module 11 and a transmission control module 12, the data storage module 11 includes a plurality of flash memory areas 110 and a shared memory area 111, the plurality of flash memory areas 110 are respectively and individually connected to different data transmission channels 221, the shared memory area 111 is connected to a plurality of data transmission channels 221, the transmission control module 12 allocates the plurality of data transmission channels 221 to the flash memory areas 110 or the shared memory area 111 according to a task sequence corresponding to the data transmission channels 221, and the transmission control module 12 is configured to monitor data traffic of the data transmission channels 221 and control the data transmission channels 221 connected to the shared memory area 111 to perform data transmission in a packet time interval manner. In this embodiment, the data transmission channel 221 is specifically a TCP transmission channel, and the transmission control module 12 is provided with a TCP monitoring port.
The system is applied to practice, and a specific work flow is shown in fig. 2, and comprises the following steps:
s1, the multiple clients respectively create corresponding data transmission tasks and sequence the multiple data transmission tasks according to the sequence of creation time;
s2, the multiple clients respectively establish data transmission channels corresponding to the respective data transmission tasks, in this embodiment, the multiple clients specifically establish data transmission channels corresponding to the respective data transmission tasks by the respective data transmission modules in a TCP connection manner;
s3, according to the sequence of the data transmission tasks, the transmission control module correspondingly allocates and connects the data transmission channels sequenced as the first N data transmission tasks to each flash memory area in the data storage module, so that one flash memory area is separately connected to one data transmission channel, and the data transmission channels of the remaining data transmission tasks are simultaneously connected to the shared memory area in the data storage module, where N is 5 in this embodiment;
s4, the transmission control module respectively controls a plurality of data transmission channels correspondingly connected with the fast memory area to simultaneously transmit data, and controls a plurality of data transmission channels connected with the shared memory area to transmit data in a time-divided mode, wherein when the data transmission channels transmit data, the data reading module of the client to which the data transmission channels belong respectively acquires the data to be transmitted from the database of each client, and transmits the data to be transmitted to the corresponding data transmission channels;
when controlling data transmission of the shared memory area, the transmission control module firstly groups a plurality of data transmission channels connected with the shared memory area according to a data transmission task sequence, and then the transmission control module controls each group to circularly transmit data according to the grouping sequence and preset data transmission time, in the embodiment, the number of the data transmission channels contained in each group is less than or equal to 5, and the preset data transmission time is 10 s;
and S5, the transmission control module monitors the data traffic of the data transmission channel correspondingly connected with the fast memory area, and if the data traffic of a certain data transmission channel is monitored to be 0, the fast memory area connected with the data transmission channel is released to distribute and connect to the data transmission channel with the highest sequencing in the shared memory area until all the data transmission channels complete respective data transmission tasks.
In this embodiment, when the method is applied specifically, the memory resources of the backup storage unit are first divided into two types: the fast memory and the shared memory are configured to be 5 fast memory areas and 1 shared memory area when the system is started and initialized, as shown in fig. 3 and 4, where the fast memory area is an independent memory pool, the memory pool is responsible for allocating memory resources to the data transmission channel to store data to be processed received from the data source, and the memory pool can only be exclusively occupied by one transmission channel, the shared memory area is also an independent memory pool, the memory pool is responsible for allocating memory resources to the data transmission channel to store data to be processed received from the data source, and unlike the fast memory area, the shared memory area can be commonly used by a plurality of transmission channels. When a large number of concurrent tasks start to perform data transmission, each task establishes a data transmission channel, where the data transmission channel is a network channel established between a data source and a backup storage unit, and for example, a TCP connection is a data transmission channel.
For the data transmission channels (channel 1-channel 5 in the figure) started by the first 5 tasks, each channel is allocated to a fast memory area, and the transmission channels exclusively occupy the memory area. The data transmission channels (channel 6-channel 10 in the figure) for starting the subsequent tasks are commonly allocated to the shared memory area. When the data transmission channel (channel 1 in the figure) allocated to the flash memory area finishes data transmission, the flash memory area is immediately released and allocated to one data transmission channel (channel 6 in the figure) in the shared memory area, so that the transmission channel continues to be exclusively used until the data transmission is finished. The purpose of dividing the fast memory area and the shared memory area is that the fast memory area is monopolized by a single data transmission channel, is not influenced by the occupation of resources of the shared memory area, can fully utilize the system bandwidth, and achieves the effect of high-efficiency data transmission.
Secondly, as for the data transmission channels of the shared memory area, there is a risk that the task cannot be continued due to resource preemption, so for the shared memory area, the used time resources of the shared memory area are divided into segments, for example, each segment is divided into 10 seconds, in addition, all the data transmission channels are divided into 5 groups, each group is assigned with a group number, after the transmission starts, the currently processed group number is recorded, within one 10 seconds, only one group of data transmission channels is allowed to work, after the used time of the 10 seconds is over, the currently processed group number is updated to be the next group, the transmission of the data of the next group of channels is continued, and after the last group is reached, the first group of channels is switched again for data transmission. The purpose of dividing the service time into segments is to avoid the occupation of a large amount of resources in a short time, ensure that each data transmission channel has an opportunity to transmit data, ensure fairness and avoid the condition of task deadlock, and achieve the effect of smooth data transmission.
Through two resource division and scheduling algorithm modes, the data transmission control under the multi-task concurrent scene can be efficiently and smoothly carried out.
In order to verify the high efficiency and the fluency of data transmission in the multitask concurrency scenario, in another embodiment, 100 service hosts of different data sources are prepared, a backup client is installed on a service host system, and a backup console is installed on another host. The client comprises a data reading module and a data transmission module. The console comprises a data storage module and a data transmission control module, and mainly provides functions of storage management, data transmission control in a concurrent scene and the like. The console needs to provide a TCP monitoring port, and the client connects to the port of the console to establish a data transmission channel.
And then carrying out concurrent data transmission control test:
1. data transmission task creation process: and selecting each client connected to the console as a backup object, creating a task based on the client host, and backing up the data of the volume D on the client host, wherein the data volume of each client host is consistent in size.
2. Data transmission task initiating stage: and sequentially initiating the first 5 backup tasks created in the previous step, wherein each task establishes a data transmission channel to the console and prepares to start data transmission.
3. And a concurrent data transmission control stage: after the first 5 tasks are initiated, the transmission control module allocates an independent fast memory area to each task, and it can be seen by observing TCP flow that the 5 tasks can achieve a very high transmission rate.
4. Data transmission task initiating stage: the remaining 95 backup tasks are initiated in sequence, each task establishing a data transmission channel to the console and preparing to begin data transmission.
5. And a concurrent data transmission control stage: and the transmission control module allocates a shared memory area to each task and triggers the shared memory areas to be used in a segmented manner, and by observing the TCP transmission flow of the tasks, each group of tasks can obtain data transmission every 10 seconds, and the phenomenon that the tasks are not transmitted all the time can be avoided.
6. And a concurrent data transmission control stage: after a period of time, one of the first 5 created tasks is finished transmitting, and it can be observed that the transmission rate of one of the later initiated tasks is obviously increased, indicating that one of the later initiated tasks is reallocated to the flash memory area for data transmission.
7. And a data transmission ending stage: continuing with the observation, it can be seen that the remaining 99 tasks can end the data transfer in turn.
In summary, the present invention avoids the problem of serious resource competition in multiple concurrent scenarios through resource partitioning and scheduling algorithms, and can ensure both high efficiency and smoothness of data transmission through the method of fast memory partition, shared memory partition grouping and using time segmentation.
Claims (10)
1. The data transmission control system under the multitask concurrency scene is characterized by comprising a plurality of clients (2) which are connected with a backup storage unit (1) and correspond to different data sources, wherein each client (2) comprises a data reading module (21) and a data transmission module (22), the data reading module (21) is used for acquiring data to be transmitted from a database (23) of the client (2), and the data transmission module (22) is used for establishing a data transmission channel (221) for connecting the client (2) with the backup storage unit (1) and transmitting the data to be transmitted to the backup storage unit (1) through the data transmission channel (221);
the backup storage unit (1) comprises a data storage module (11) and a transmission control module (12), the data storage module (11) comprises a plurality of fast memory areas (110) and a shared memory area (111), the fast memory areas (110) are respectively and independently connected to different data transmission channels (221), the shared memory area (111) is connected to a plurality of data transmission channels (221), the transmission control module (12) is used for controlling the transmission of the data according to the task sequence corresponding to the data transmission channels (221), to allocate and connect a plurality of data transmission channels (221) to the flash memory region (110) or the shared memory region (111), the transmission control module (12) is used for monitoring the data traffic of the data transmission channel (221), and controls a data transmission channel (221) connected with the shared memory area (111) to perform data transmission in a grouped time interval manner.
2. The system according to claim 1, wherein the data transmission channel (221) is a TCP transmission channel.
3. The data transmission control system in the multitask concurrency scenario according to claim 2, wherein a TCP listening port is disposed in the transmission control module (12).
4. A data transmission control method using the system according to claim 1, comprising the steps of:
s1, the multiple clients respectively create corresponding data transmission tasks and sequence the multiple data transmission tasks according to the sequence of creation time;
s2, the multiple clients respectively establish data transmission channels corresponding to the respective data transmission tasks;
s3, according to the sequence of the data transmission tasks, the transmission control module correspondingly distributes and connects the data transmission channels sequenced into the first N data transmission tasks to each fast memory area in the data storage module, so that one fast memory area is independently connected with one data transmission channel, and the data transmission channels of the rest data transmission tasks are simultaneously connected to the shared memory area in the data storage module;
s4, the transmission control module respectively controls a plurality of data transmission channels correspondingly connected with the fast memory area to simultaneously transmit data, and controls a plurality of data transmission channels connected with the shared memory area to transmit data in a grouped time interval mode;
and S5, the transmission control module monitors the data traffic of the data transmission channel correspondingly connected with the fast memory area, and if the data traffic of a certain data transmission channel is monitored to be 0, the fast memory area connected with the data transmission channel is released to distribute and connect to the data transmission channel with the highest sequencing in the shared memory area until all the data transmission channels complete respective data transmission tasks.
5. The data transmission control method according to claim 4, wherein in step S2, the plurality of clients specifically use their respective data transmission modules to establish data transmission channels corresponding to their respective data transmission tasks in a TCP connection manner.
6. The data transmission control method according to claim 4, wherein in step S3, N is 5.
7. The data transmission control method according to claim 4, wherein the step S4 specifically comprises the following steps:
s41, the transmission control module controls a plurality of data transmission channels correspondingly connected with the flash memory area to simultaneously transmit data, at the moment, the data reading modules of the clients to which the data transmission channels belong respectively acquire data to be transmitted from the databases of the respective clients and transmit the data to be transmitted to the corresponding data transmission channels;
s42, the transmission control module groups the data transmission channels connected with the shared memory area according to the data transmission task sequence;
and S43, the transmission control module controls each group to circularly transmit data according to the grouping sequence and the preset data transmission time, at the moment, the data reading module of the client to which each data transmission channel in the group belongs respectively obtains the data to be transmitted from the database of each client, and transmits the data to be transmitted to the corresponding data transmission channel.
8. The data transmission control method according to claim 7, wherein the number of data transmission channels included in each packet in step S42 is equal to or less than M.
9. The data transmission control method according to claim 8, wherein M is 5 in step S42.
10. The data transmission control method according to claim 7, wherein the data transmission time preset in step S43 is 10S.
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