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Response Times calculation Messages in this topic - RSS

Unregistered User
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10/18/2019
Unregistered User
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How the Response time of individual Requests is calculated?
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George @StresStimulus
George @StresStimulus
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Posts: 244


10/18/2019
George @StresStimulus
George @StresStimulus
Administrator
Posts: 244
Response time of individual Requests (or sessions) is equal to:
Time to First Byte (TTFB) + Network Time = Time to Last Byte (TTLB)
see - http://support.stresstimulus.com/display/doc50/Request+Details

Response Times for a request can be >= TTFB
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Unregistered User
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10/18/2019
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How the response time is calculated for a transaction.
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George @StresStimulus
George @StresStimulus
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10/18/2019
George @StresStimulus
George @StresStimulus
Administrator
Posts: 244
A transaction (or a page) comprise of multiple sessions. Some of them are requested in parallel, and some others are requesting sequentially. Transaction response time is an interval between its first session's request and the latest response received (see “Avg. (s)” here http://support.stresstimulus.com/display/doc50/Transaction+Details )
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10/18/2019
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When we are not downloading the static pages in script, Is response time = Connect Time + TTFB ?
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George @StresStimulus
George @StresStimulus
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Posts: 244


10/19/2019
George @StresStimulus
George @StresStimulus
Administrator
Posts: 244
Generally, a transaction or a page can have multiple dynamic requests (e.g., a primary page request followed by a dynamic resource returning JSON data), even if you do not download static resources (i.e., static images). Therefore, the transaction (unlike request) does not have TTFB.
If you have a page that has only one dynamic request in no static resources are requested, then such page time will be equal to Connect Time + TTFB + Network time.
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10/19/2019
Unregistered User
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When we are downloading the static pages as well: Is response time the total download time or it is the addition of TTFB of main url and TTFB of all static pages?
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George @StresStimulus
George @StresStimulus
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Posts: 244


10/19/2019
George @StresStimulus
George @StresStimulus
Administrator
Posts: 244
When a page has multiple requests, then its response is not equal to thy Sum of individual requests’ TTFB because some of the requests can be issued in parallel. Transaction response time is an interval between its first session's request and the latest response received.
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