Methods of performance estimation in provisioning delay intolerant data services
AssigneeZarlink Semiconductor V.N. Inc.
InventorsD.C. John Ta, Jim Kosolowski
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Abstract
Methods and apparatus for evaluating the performance of data switching equipment in processing and conveying, delay, jitter and loss sensitive streams of data are provided. The apparatus includes receive trace records and transmit trace records and the methods include the inspection of the receive and transmit trace records to evaluate the performance of the data switching equipment. The advantages include the availability of an assessment of data transport latencies, data conveyance jitter and data segment loss to enable the provisioning of streaming data services.
Claims27
A data switching node evaluating Protocol Data Unit (PDU) switching performance comprising:
- a. a PDU classifier extracting header information from PDUs received via a plurality of ports associated with the data switching node;
- b. a receive trace record having entries, each receive trace record entry specifying timed information regarding a corresponding received PDU;
- c. a switching function processing PDUs;
- d. a transmit trace record having entries, each transmit trace record entry specifying timed information regarding a corresponding processed PDU;
- and
- e. a processor using the information stored in trace record entries to evaluate the performance of the switching function.
A method of evaluating a processing performance of a data switching node forwarding Protocol Data Units (PDUs) comprising steps of:
- a. extracting PDU header information from a received PDU;
- b. populating an entry in a receive trace record held by the data switching node;
- c. processing the received PDU;
- d. populating an entry in a transmit trace record held by the data switching node;
- and
- e. evaluating the processing performance based on information held in trace record entries.
Dependencies are inferred from the claim text.