Network delay measuring method and system for eliminating position errors
A technology of network delay and measurement method, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve the problems of multiple modifications, no elimination of transmission position errors, and expensive hardware, achieving low cost, elimination of The effect of position error
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[0051] The content of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0052] The present invention inserts an NDIS middle-layer driver program between the microport driver and the protocol driver of the Windows operating system, and moves the recording position of the measurement time stamp from the traditional application program to the middle-layer driver, and the measurement probe program of the user space The time delay value of the network path is calculated according to the time stamp recorded and returned, so as to eliminate the position error of time delay measurement. Measurement position error analysis and the realization process of the inventive method are described as follows:
[0053] (1) Position error analysis
[0054] The position error mainly includes: (1) the time for each layer of the kernel driver to process data packets; (2) the queuing time for competing CPUs between communication application proce...
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