Calculating Times from Timestamps
You can measure the performance by calculating the times from the timestamp values.
About this task
The following timestamps are the most important timestamps to help determine performance.
RequestTimeEx
ResponseStartTimeEx
ResponseAckTimeEx
Procedure
- The first time value in microseconds is the difference
between when the DNCA sees the end of the request and the start of
the response:
RspTTFB
=ResponseStartTimeEx
-RequestTimeEx
- The second time value in microseconds is the difference
between when the DNCA sees the start of the request to the end of the
response:
RspTTLB
=ResponseTimeEx
-ResponseStartTimeEx
- The third time value in microseconds is the time for the
last response to travel from the DNCA to the visitor. Time that is
required for the initial request to go from the user to DNCA, which
is a measurement of network round-trip time:
RspTTLA
=ResponseACKTimeEx
minusResponseTimeEx