Data migration method and device and PCIE system

A data movement and data technology, applied in the computer field, can solve the problems of reduced transmission performance, small data movement, poor PCIE system expansion performance, etc., and achieves the effect of improving scalability and reducing CPU usage.

Active Publication Date: 2021-09-24
SUZHOU KEDA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in such a mapping method, since the mapping window of the host device is limited by the data bar (bar), the amount of data that can be moved each time is relatively small.
At the same time, the current data transfer between the host device and the slave device is usually performed by the host device. When the PCIE system expands and the number of slave devices is large, the CPU (Central Processing Unit, central processing unit) occupancy rate of the host device will increase. will be higher, and the DMA (DirectMemory Access, direct memory access) transmission performance of the host device will decrease, making the expansion performance of the PCIE system poor

Method used

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  • Data migration method and device and PCIE system
  • Data migration method and device and PCIE system
  • Data migration method and device and PCIE system

Examples

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Embodiment Construction

[0048] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0049]Furthermore, the drawings are merely schematic illustrations of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemen...

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Abstract

The invention provides a data migration method and device and a PCIE system. The data migration method applied to slave equipment comprises the following steps: configuring a memory space of the slave equipment; establishing mapping between the memory space of the slave equipment and a memory space of host equipment, and forming a first shared memory between the slave equipment and the host equipment, with the first shared memory being at least used for transmitting address information; and mapping the address information of the first shared memory in an outward mapping manner so as to execute data migration from the host equipment to the slave equipment and from the slave equipment to the host equipment. Data migration between the host equipment and the slave equipment is optimized, the CPU occupancy rate of the host equipment is reduced, the expansibility of the whole system is improved, and meanwhile the transmission performance between the host equipment and the slave equipment is improved.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a data transfer method, device and PCIE system. Background technique [0002] At present, in the PCIE (peripheral component interconnect express, high-speed serial computer expansion bus standard) system, the host device and the slave device realize the shared memory of the host device and the slave device through inbound mapping (inbound) of the slave device. However, in such a mapping manner, since the mapping window of the host device is limited by data bars, the amount of data transfer that can be performed each time is relatively small. At the same time, the current data transfer between the host device and the slave device is usually performed by the host device. When the PCIE system expands and the number of slave devices is large, the CPU (Central Processing Unit, central processing unit) occupancy rate of the host device will increase. will be higher, and the DMA (Dir...

Claims

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Application Information

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IPC IPC(8): G06F3/06G06F9/50G06F13/42
CPCG06F3/0607G06F3/0638G06F3/0671G06F13/4282G06F9/5027Y02D10/00
Inventor 赵欣朱俊伍晓宇毛弘毅
Owner SUZHOU KEDA TECH
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