Information processing device, information processing system, information processing method, and program

An information processing device and data volume technology, applied in the direction of electrical digital data processing, instruments, etc., can solve the problem of transmission speed reduction and achieve the effect of suppressing the reduction of transmission speed

Inactive Publication Date: 2012-07-25
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there will be such a disadvantage that the sending side device determines that there is no space in the receiving buffer of the receiving side device, and the transmission stops, resulting in a decrease in the transmission speed.

Method used

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  • Information processing device, information processing system, information processing method, and program
  • Information processing device, information processing system, information processing method, and program
  • Information processing device, information processing system, information processing method, and program

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0036] 1. First Embodiment (First Configuration Example of Information Processing System)

[0037] 2. Second Embodiment (Second Configuration Example of Information Processing System)

[0038] 1. The first embodiment

[0039] figure 1 A schematic structural example of an information processing system to which the first embodiment of the present invention is applied is shown.

[0040] The information processing system 1 is constituted by a host computer 10 and an information processing device 20 connected to each other through a high-speed serial transfer interface (I / F) bus 30 .

[0041] As the serial transmission I / F, for example, a high-speed bus of PCI Express (Peripheral Component Interconnect Express) is used.

[0042] In the present embodiment, the information processing apparatus 20 is formed as a storage system mounted with a nonvolatile memory such as flash memory, and is formed as a storage device detachably mounted in, for example, the host computer 10 .

[004...

no. 2 approach

[0194] Figure 9 A schematic structural example of an information processing system to which the second embodiment of the present invention is applied is shown.

[0195] Differences between the information processing system 1A of the second embodiment and the information processing system 1 of the first embodiment are as follows.

[0196] The information processing system 1A adds a stall time (Tstall) measurement circuit 330 to the transmission state monitoring unit 30A of the information processing device 20A, and the stall time measurement circuit 330 is used to measure the time when data transmission is stopped due to insufficient credit.

[0197] Therefore, the maximum data amount determination unit 320A determines the maximum data amount by using the information that the stop has occurred or the information that the stop has not occurred obtained by the stop time measurement circuit 330 in addition to the transmission speed obtained by the transmission speed measurement c...

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PUM

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Abstract

An information processing device includes a serial transfer interface which performs serial transfer for data in a unit of packets between counterparty devices, a transfer control unit which performs control of data transfer of the serial transfer interface, and a transfer state monitoring unit which monitors a data transfer state including a data size being subjected to data transfer of the serial transfer interface, determines and can change the maximum data size of a transmission packet to be transmitted next according to the monitored state, and supplies the determined maximum data size to the transfer control unit, and the transfer control unit performs control of data transfer of the serial transfer interface according to the maximum data size of the transmission packet supplied from the transfer state monitoring unit.

Description

[0001] Cross References to Related Applications [0002] This application contains subject matter related to that disclosed in Japanese Priority Patent Application JP 2010-286123 filed in Japan Patent Office on Dec. 22, 2010, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to an information processing device, an information processing system, an information processing method and a program provided with a serial transmission interface (I / F). The serial transmission interface is, for example, PCI Express I / F (Peripheral Component Interconnect Express I / F; Peripheral component interconnection fast interface), etc. Background technique [0004] As a data transmission interface (I / F) between a host computer such as a personal computer and a portable information processing device equipped with a nonvolatile memory, PCI Express I / F adopts a serial transmission scheme instead of a parallel transmission scheme h...

Claims

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Application Information

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IPC IPC(8): G06F13/28
CPCG06F13/28G06F13/4045G06F13/4295G06F13/42
Inventor 铃木快
Owner SONY CORP
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