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Different TTFBs in the same test
08-06-2020, 09:57 PM
Post: #1
Different TTFBs in the same test
What mean these (magenta bordered) different TTFBs on the screenshot?

[Image: 3326113591.png]
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08-06-2020, 10:00 PM (This post was last modified: 08-06-2020 10:04 PM by dreamwerx.)
Post: #2
RE: Different TTFBs in the same test
Hi - I believe you need to add up multiple values to hit that number:

307 (DNS) +
310 (Connection) +
345 (SSL) +
1415 (TTFB)

= 2377 = when the browser really gets data for the first time

Also I see you tested from Frankfurt - if your website is not hosted in europe(For example in US) - it will add substantial latency / ms into most of those values.

The test is also set to 3G which throttles the connection, it may be what you wanted.
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08-06-2020, 10:31 PM
Post: #3
RE: Different TTFBs in the same test
makes sense! Thank you!
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08-07-2020, 12:45 AM
Post: #4
RE: Different TTFBs in the same test
The one in the data table at the top is the TTFB for the overall page (from start of navigation to first bit of HTML) and will include DNS, connect, TLS, redirects, etc.

The one in the waterfall is the server response time for that specific request from when the request was sent (on an already-established connection) until the first bit of the response.
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