Method and a device for controlling memory-usage of a functional component
A technology for functional components and memory, applied in the field of network components, which can solve problems such as heavy resource load and limiting the capacity of electronic equipment
Active Publication Date: 2015-04-29
TELLABS
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
Therefore, the inconvenience of the above-mentioned conventional means for managing memory usage is that the operating system must frequently perform memory management for these peripheral components, and, as a consequence, the resources running the operating system may be so heavily loaded that they In some cases constitutes a bottleneck that limits the capacity of the entire electronic device
Method used
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Embodiment Construction
[0043] figure 1 Illustrated is an exemplary data structure related to an exemplary embodiment of the present invention. The virtual memory 111 is organized to include fixed-length adjacent virtual memory blocks called virtual memory pages. in figure 1 In, some virtual memory pages are denoted by reference numbers 112, 113, 114, 115, and 116. The virtual memory 111 is implemented with a physical memory 120 that can be implemented with one or more memory devices such as one or more random access memory "RAM" circuits. The virtual memory page is a basic data unit for managing the mapping between the virtual memory 111 and the physical memory 120. in figure 1 , The mapping between the virtual memory page and the fixed-length adjacent physical memory area of the physical memory 120 is shown by one of the connecting lines indicated by the reference number 128. in figure 1 In the exemplary situation shown, the virtual memory page 113 is implemented with a physical memory area 119,...
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The invention relates to controlling memory-usage of a functional component, e.g. a network interface of a router or a switch. A portion of a virtual memory organized to comprise virtual memory pages is reserved (201) for the use of the functional component. Mapping between the virtual memory pages and physical memory areas implemented with a physical memory is formed (202), and data items providing accesses to the physical memory areas are written (203) to one or more of the physical memory areas. The functional component is enabled to directly access to a physical memory area mapped to a virtual memory page so that the data item that provides access to this physical memory area is read (204) from the physical memory with the aid of the mapping and a virtual memory address related to the virtual memory page, and the read data item is delivered (205) to the functional component.
Description
Technical field [0001] The present invention relates to a method and device for controlling the memory usage of a functional component, which may, but need not be, for example, a network interface of a network element, for example, a network interface of a network protocol "IP" router. Furthermore, the present invention relates to a computer program for controlling memory usage of functional components, and relates to network elements. Background technique [0002] Virtual memory is a concept of a memory management technology that involves mapping memory addresses (called virtual addresses) used for processing to physical addresses of physical memory. The virtual memory seen by the processing can be displayed as a stack of fixed-length continuous virtual memory blocks called virtual memory pages, which are basic data units used to manage the mapping between virtual memory and physical memory. The size of each virtual memory page is preferably a power of 2, such as, but not neces...
Claims
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Login to View More IPC IPC(8): G06F12/10G06F12/08G06F12/1081H04L45/74
CPCG06F12/1081G06F2212/657H04L45/745G06F12/08H04L45/60H04L67/1097
Inventor 维莱·哈利沃里卡里·卡穆宁茱哈马蒂·库西萨里
Owner TELLABS