CN114217997A - Method, system, equipment and storage medium for improving real-time performance of KVM display data - Google Patents
Method, system, equipment and storage medium for improving real-time performance of KVM display data Download PDFInfo
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- G06F9/00—Arrangements for program control, e.g. control units
- 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 provides a method, a system, equipment and a storage medium for improving real-time performance of KVM display data, wherein the method comprises the following steps: establishing a websocket at a server end to monitor a fixed port number; creating a video data capturing thread, circularly calling a function for managing an input/output channel in the video data capturing thread, capturing original compressed data on hardware and storing the original compressed data as a JPEG (joint photographic experts group) compressed format picture file; reading the JPEG compressed format picture file to a buffer area of a corresponding port number; and responding to the fixed port number accessed by the client, and capturing and displaying the JPEG compressed format picture file in the buffer area in real time through socket communication. The invention can capture JPEG compressed format picture data in real time and reduce the occupation of remote control redirection bandwidth.
Description
Technical Field
The present invention relates to the field of data display, and more particularly, to a method, system, device and storage medium for improving real-time performance of KVM display data.
Background
The OS (Operating System) on the HOST side of the server may directly output and display through a VGA (Video Graphics Array) display interface, and may use H5/JAVA remote display, i.e., KVM (Kernel-based Virtual Machine) function, in a manner of console redirection.
At present, video data of a BMC (Board Management Controller) technology of a server is transmitted to a KVM front end for display in a YUV (color coding method) compression format, which limits a video output format of a hardware chip to the YUV format, and if the video data in the YUV format is not supported for output, software is required for format conversion, which may reduce real-time performance of KVM display data.
Disclosure of Invention
In view of the above, an object of the embodiments of the present invention is to provide a method, a system, a computer device, and a computer readable storage medium for improving the real-time performance of KVM display data, in which a function for managing input and output channels is called in a loop in a video data capturing thread, raw compressed data on hardware is captured and stored as a JPEG (Joint Photographic Experts Group, a standard for continuous tone static image compression) compressed format picture file, and the KVM display is directly transmitted by using JPEG, where JPEG data transmission in the compression ratio occupies less bandwidth and the transmission rate is faster.
Based on the above objectives, an aspect of the embodiments of the present invention provides a method for improving real-time performance of KVM display data, including the following steps: establishing a websocket at a server end to monitor a fixed port number; creating a video data capturing thread, circularly calling a function for managing an input/output channel in the video data capturing thread, capturing original compressed data on hardware and storing the original compressed data as a JPEG (joint photographic experts group) compressed format picture file; reading the JPEG compressed format picture file to a buffer area of a corresponding port number; and responding to the fixed port number accessed by the client, and capturing and displaying the JPEG compressed format picture file in the buffer area in real time through socket communication.
In some embodiments, said fetching of raw compressed data on hardware and coexistence as a JPEG compressed format picture file comprises: mapping a physical address corresponding to original compressed data on hardware into an operable virtual address, capturing data in the virtual address, and storing the captured data with the picture resolution as a picture file in a JPEG (joint photographic experts group) compression format.
In some embodiments, said reading the JPEG compressed format picture file to a buffer of a corresponding port number comprises: and reading the socket pointing to the cache of the corresponding port number by using the send function.
In some embodiments, said capturing and displaying a JPEG compressed format picture file in real time in said buffer by socket communication comprises: the port monitored by the server side receives the picture data by using the recv function and displays the picture data to the Kvm client side component.
In another aspect of the embodiments of the present invention, a system for improving real-time performance of KVM display data is provided, including: the monitoring module is configured for establishing a websocket at the server end to monitor a fixed port number; the capturing module is configured for creating a video data capturing thread, circularly calling a function for managing an input/output channel in the video data capturing thread, capturing original compressed data on hardware and storing the original compressed data as a JPEG (joint photographic experts group) compressed format picture file; the reading module is configured to read the JPEG compressed format picture file to a buffer area of a corresponding port number; and the display module is configured to respond to the fixed port number accessed by the client, and capture the JPEG compressed format picture file in the buffer area in real time through socket communication for display.
In some embodiments, the grasping module is configured to: mapping a physical address corresponding to original compressed data on hardware into an operable virtual address, capturing data in the virtual address, and storing the captured data with the picture resolution as a picture file in a JPEG (joint photographic experts group) compression format.
In some embodiments, the reading module is configured to: and reading the socket pointing to the cache of the corresponding port number by using the send function.
In some embodiments, the display module is configured to: the port monitored by the server side receives the picture data by using the recv function and displays the picture data to the Kvm client side component.
In another aspect of the embodiments of the present invention, there is also provided a computer device, including: at least one processor; and a memory storing computer instructions executable on the processor, the instructions when executed by the processor implementing the steps of the method as above.
In a further aspect of the embodiments of the present invention, a computer-readable storage medium is also provided, in which a computer program for implementing the above method steps is stored when the computer program is executed by a processor.
The invention has the following beneficial technical effects: the KVM supports real-time capture of JPEG image compression format data and reduces occupation of remote control redirection bandwidth.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained by using the drawings without creative efforts.
FIG. 1 is a schematic diagram illustrating an embodiment of a method for improving real-time performance of KVM display data according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of a system for improving real-time performance of KVM display data according to the present invention;
FIG. 3 is a schematic diagram of a hardware configuration of a computer device for improving real-time performance of KVM display data according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a computer storage medium for improving real-time performance of KVM display data according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
In a first aspect of the embodiments of the present invention, an embodiment of a method for improving real-time performance of KVM display data is provided. FIG. 1 is a schematic diagram illustrating an embodiment of a method for improving real-time performance of KVM display data according to the present invention. As shown in fig. 1, the embodiment of the present invention includes the following steps:
s1, establishing a websocket at a server end to monitor a fixed port number;
s2, creating a video data capturing thread, circularly calling a function for managing an input/output channel in the video data capturing thread, capturing original compressed data on hardware and storing the original compressed data as a JPEG (joint photographic experts group) compressed format picture file;
s3, reading the JPEG compressed format picture file to a buffer area of a corresponding port number; and
and S4, responding to the fixed port number accessed by the client, and capturing and displaying the JPEG compressed format picture file in the buffer area in real time through socket communication.
And establishing a websocket at the server side to monitor the fixed port number. For the remote KVM, taking H5 as an example, the web server creates a websocket to listen for the fixed port number. The WebSocket Protocol is a new network Protocol based on TCP (Transmission Control Protocol). It enables full-duplex (full-duplex) communication between the browser and the server-allowing the server to actively send information to the client. The WebSocket protocol supports full duplex communication between a client (running untrusted code in a controlled environment) and a remote host (electing to join communication of the code). The security model for this is based on the original security model commonly used by Web browsers. The protocol includes an open handshake followed by message frames on the TCP layer. The goal of this technology is to provide a communication mechanism for browser-based applications that require two-way communication with a server that cannot rely on opening multiple HTTP (hypertext Transfer Protocol) connections (e.g., using XMLHttpRequest or < iframe > and long polling). The embodiment of the present invention has no special requirement on the port number, but needs a fixed port number (for example, 8811, the web server and the client may perform socket communication according to the port number).
And creating a video data capturing thread, circularly calling a function for managing an input/output channel in the video data capturing thread, capturing original compressed data on hardware and storing the original compressed data as a JPEG (joint photographic experts group) compressed format picture file. And the server side creates a video data capturing thread, the IOCTL driven by the video is circularly called in the thread, and the framebuffer data, namely JPEG data, is captured and stored as a JPEG compressed format picture file. The IOCTL is a function in the device driver that manages the I/O (Input/Output) channels of the device. The management of the I/O channel is to control some characteristics of the device, such as the transmission baud rate of the serial port, the rotation speed of the motor, and the like. The number of the parameters is as follows: int ioctl (int fd, int cmd, …); where fd is the file identifier returned by the open function when the user program opens the device, cmd is the control command of the user program to the device, and the following ellipses are some supplementary parameters, typically at most one, with or without meaning related to cmd. The IOCTL function is an attribute component of the file structure, that is, if the driver provides support for the IOCTL, the user can control the I/O channel of the device using the IOCTL function in the user program.
In some embodiments, said fetching of raw compressed data on hardware and coexistence as a JPEG compressed format picture file comprises: mapping a physical address corresponding to original compressed data on hardware into an operable virtual address, capturing data in the virtual address, and storing the captured data with the picture resolution as a picture file in a JPEG (joint photographic experts group) compression format. The Framebuffer is original compressed data on hardware (the type of the compression format is determined according to a hardware encoder of a chip), in this case, the Framebuffer is in a JPEG compression format, a physical address corresponding to the Framebuffer is mapped to an operable virtual address, data in the virtual address, that is, data in the operable Framebuffer, is captured, and data with the resolution of the captured picture is stored as a picture file (for example, 800 × 600) in the JPEG compression format.
And reading the JPEG compressed format picture file to a buffer area of a corresponding port number. In some embodiments, said reading the JPEG compressed format picture file to a buffer of a corresponding port number comprises: and reading the socket pointing to the cache of the corresponding port number by using the send function. Reading the captured JPEG compressed format picture file into a socket pointing buffer (cache), and reading the socket pointing buffer of a corresponding port number by using a standard send function after the picture is captured because the picture needs socket communication through web display. (socket point buffer is a buffer that can receive and transmit data through recv (receive)/send function). Socket is an abstraction layer between an application layer and a transmission layer, abstracts complex operations of a TCP/IP layer into a plurality of simple interfaces, and calls the application layer to realize the communication of processes in a network. Socket originates from UNIX, and under the idea that UNIX all files, interprocess communication is named as a file descriptor (file descriptor), Socket is an implementation of an "open-read/write-close" mode, a server and a client maintain a "file" respectively, after connection is established and opened, content can be written into the file for an opposite party to read or read the content of the opposite party, and the file is closed when communication is finished.
And responding to the access of the client to the fixed port number, and capturing and displaying the JPEG compressed format picture file in the buffer area in real time through socket communication. The web-side listening port receives the picture data using recv to be displayed to Kvm client components.
In some embodiments, said capturing and displaying a JPEG compressed format picture file in real time in said buffer by socket communication comprises: the port monitored by the server side receives the picture data by using the recv function and displays the picture data to the Kvm client side component.
According to the invention, the function for managing the input and output channels is circularly called in the video data capturing thread, the original compressed data on hardware is captured and stored as the JPEG compressed format picture file, the JPEG is used for directly transmitting the KVM display, the JPEG data transmission in the compression ratio occupies less bandwidth, and the transmission rate is higher.
It should be noted that, the steps in the embodiments of the method for improving the real-time performance of KVM display data described above may be mutually intersected, replaced, added, or deleted, and therefore, the method for improving the real-time performance of KVM display data by reasonable permutation and combination transformation shall also fall within the scope of the present invention, and shall not limit the scope of the present invention to the embodiments.
In view of the above, a second aspect of the present invention provides a system for improving real-time performance of KVM display data. As shown in fig. 2, the system 200 includes the following modules: the monitoring module is configured for establishing a websocket at the server end to monitor a fixed port number; the capturing module is configured for creating a video data capturing thread, circularly calling a function for managing an input/output channel in the video data capturing thread, capturing original compressed data on hardware and storing the original compressed data as a JPEG (joint photographic experts group) compressed format picture file; the reading module is configured to read the JPEG compressed format picture file to a buffer area of a corresponding port number; and the display module is configured to respond to the fixed port number accessed by the client, and capture the JPEG compressed format picture file in the buffer area in real time through socket communication for display.
In some embodiments, the grasping module is configured to: mapping a physical address corresponding to original compressed data on hardware into an operable virtual address, capturing data in the virtual address, and storing the captured data with the picture resolution as a picture file in a JPEG (joint photographic experts group) compression format.
In some embodiments, the reading module is configured to: and reading the socket pointing to the cache of the corresponding port number by using the send function.
In some embodiments, the display module is configured to: the port monitored by the server side receives the picture data by using the recv function and displays the picture data to the Kvm client side component.
In view of the above object, a third aspect of the embodiments of the present invention provides a computer device, including: at least one processor; and a memory storing computer instructions executable on the processor, the instructions being executable by the processor to perform the steps of: s1, establishing a websocket at a server end to monitor a fixed port number; s2, creating a video data capturing thread, circularly calling a function for managing an input/output channel in the video data capturing thread, capturing original compressed data on hardware and storing the original compressed data as a JPEG (joint photographic experts group) compressed format picture file; s3, reading the JPEG compressed format picture file to a buffer area of a corresponding port number; and S4, responding to the fixed port number accessed by the client, and capturing and displaying the JPEG compressed format picture file in the buffer area in real time through socket communication.
In some embodiments, said fetching of raw compressed data on hardware and coexistence as a JPEG compressed format picture file comprises: mapping a physical address corresponding to original compressed data on hardware into an operable virtual address, capturing data in the virtual address, and storing the captured data with the picture resolution as a picture file in a JPEG (joint photographic experts group) compression format.
In some embodiments, said reading the JPEG compressed format picture file to a buffer of a corresponding port number comprises: and reading the socket pointing to the cache of the corresponding port number by using the send function.
In some embodiments, said capturing and displaying a JPEG compressed format picture file in real time in said buffer by socket communication comprises: the port monitored by the server side receives the picture data by using the recv function and displays the picture data to the Kvm client side component.
Fig. 3 is a schematic hardware structural diagram of an embodiment of the computer device for improving the real-time performance of KVM display data according to the present invention.
Taking the device shown in fig. 3 as an example, the device includes a processor 301 and a memory 302.
The processor 301 and the memory 302 may be connected by a bus or other means, such as the bus connection in fig. 3.
The memory 302 is a non-volatile computer-readable storage medium, and can be used for storing non-volatile software programs, non-volatile computer-executable programs, and modules, such as program instructions/modules corresponding to the method for improving the real-time performance of KVM display data in the embodiment of the present application. The processor 301 executes various functional applications and data processing of the server by running the non-volatile software programs, instructions and modules stored in the memory 302, i.e., implements a method for improving the real-time performance of KVM display data.
The memory 302 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the method of improving the real-time of KVM display data, and the like. Further, the memory 302 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some embodiments, memory 302 optionally includes memory located remotely from processor 301, which may be connected to a local module via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Any embodiment of the computer device executing the method for improving the real-time performance of the KVM display data may achieve the same or similar effects as any corresponding embodiment of the method described above.
The present invention also provides a computer readable storage medium storing a computer program that when executed by a processor performs a method of improving the real-time performance of KVM display data.
FIG. 4 is a schematic diagram of an embodiment of a computer storage medium for improving the real-time performance of KVM display data according to the present invention. Taking the computer storage medium as shown in fig. 4 as an example, the computer readable storage medium 401 stores a computer program 402 which, when executed by a processor, performs the method as described above.
Finally, it should be noted that, as one of ordinary skill in the art can appreciate that all or part of the processes of the methods of the above embodiments can be implemented by a computer program to instruct related hardware, and the program of the method for improving the real-time performance of KVM display data can be stored in a computer readable storage medium, and when executed, the program can include the processes of the embodiments of the methods described above. The storage medium of the program may be a magnetic disk, an optical disk, a Read Only Memory (ROM), a Random Access Memory (RAM), or the like. The embodiments of the computer program may achieve the same or similar effects as any of the above-described method embodiments.
The foregoing is an exemplary embodiment of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the present disclosure as defined by the appended 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. Furthermore, although elements of the disclosed embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
It should be understood that, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly supports the 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 numbers of the embodiments disclosed in the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
Claims (10)
1. A method for improving real-time performance of KVM display data is characterized by comprising the following steps:
establishing a websocket at a server end to monitor a fixed port number;
creating a video data capturing thread, circularly calling a function for managing an input/output channel in the video data capturing thread, capturing original compressed data on hardware and storing the original compressed data as a JPEG (joint photographic experts group) compressed format picture file;
reading the JPEG compressed format picture file to a buffer area of a corresponding port number; and
and responding to the access of the client to the fixed port number, and capturing and displaying the JPEG compressed format picture file in the buffer area in real time through socket communication.
2. The method of claim 1, wherein capturing raw compressed data on hardware and storing as a JPEG compression format picture file comprises:
mapping a physical address corresponding to original compressed data on hardware into an operable virtual address, capturing data in the virtual address, and storing the captured data with the picture resolution as a picture file in a JPEG (joint photographic experts group) compression format.
3. The method according to claim 1, wherein reading the JPEG compressed format picture file to a buffer of a corresponding port number comprises:
and reading the socket pointing to the cache of the corresponding port number by using the send function.
4. The method according to claim 1, wherein the capturing and displaying the JPEG compressed format picture file in the buffer in real time through socket communication comprises:
the port monitored by the server side receives the picture data by using the recv function and displays the picture data to the Kvm client side component.
5. A system for improving real-time performance of KVM display data, comprising:
the monitoring module is configured for establishing a websocket at the server end to monitor a fixed port number;
the capturing module is configured for creating a video data capturing thread, circularly calling a function for managing an input/output channel in the video data capturing thread, capturing original compressed data on hardware and storing the original compressed data as a JPEG (joint photographic experts group) compressed format picture file;
the reading module is configured to read the JPEG compressed format picture file to a buffer area of a corresponding port number; and
and the display module is configured to respond to the fixed port number accessed by the client, and capture the JPEG compressed format picture file in the buffer area in real time through socket communication for display.
6. The system of claim 5, wherein the grasping module is configured to:
mapping a physical address corresponding to original compressed data on hardware into an operable virtual address, capturing data in the virtual address, and storing the captured data with the picture resolution as a picture file in a JPEG (joint photographic experts group) compression format.
7. The system of claim 5, wherein the reading module is configured to:
and reading the socket pointing to the cache of the corresponding port number by using the send function.
8. The system of claim 5, wherein the display module is configured to:
the port monitored by the server side receives the picture data by using the recv function and displays the picture data to the Kvm client side component.
9. A computer device, comprising:
at least one processor; and
a memory storing computer instructions executable on the processor, the instructions when executed by the processor implementing the steps of the method of any one of claims 1 to 4.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 4.
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| PCT/CN2022/142090 WO2023160210A1 (en) | 2022-02-22 | 2022-12-26 | Method and system for improving real-time performance of kvm display data, and device and storage medium |
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