Data processing: software development – installation – and managem – Software program development tool – Testing or debugging
Reexamination Certificate
2008-04-23
2011-10-25
Zhen, Wei (Department: 2191)
Data processing: software development, installation, and managem
Software program development tool
Testing or debugging
Reexamination Certificate
active
08046744
ABSTRACT:
The present invention provides a system and method for measuring latency in a continuous processing system. The invention involves generating “tracer” messages that are specifically designed for measuring latency. A tracer message is configured to pass through and be outputted by each primitive in the tracer message's path regardless of the function of the primitive and without changing the state of the primitive. Tracer messages are not filtered by filter primitives or delayed by time-delay primitives. Tracer messages are detected and discarded within loops. These rules provide for predictable behavior of tracer messages, thereby making them reliable indicators of latency and liveness in the continuous processing system. A tracer message is inserted into the continuous processing system at a desired start point for measuring latency. At a desired end point for measuring latency, latency is measured by calculating the amount of time the tracer message took to travel from the start point to the end point.
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Hagmann Robert B.
Marshall Ian D.
Sanin Aleksey
Tsimelzon Mark
Sterne Kessler Goldstein & Fox P.L.L.C.
Sybase Inc.
Wu Junchun
Zhen Wei
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