How to learn the server response time on Google PageSpeed that looks?

Hello!
There is a task to accelerate operation of the site, it swears Google PageSpeed.
Deployed on the local server a copy of the site, but I can not understand how in the developer dashboard Shomu to see the server response time.
Watching the Networking tab -> choose requested url, the tab Timing you see prntscr.com/jj4osn
At first, I thought this TTFB, but then I read that this is not true, although many people confuse...
Remains Queueing - but not sure this is what you need...
Maybe Chrome is not showing this time at all?
June 5th 19 at 21:17
3 answers
June 5th 19 at 21:19
You need to learn not locally and not via Chrome, and on special service from Google. There he shows specific layout and even offers a solution:

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Although it is sometimes said that in the context of a specific task is not to fix, but it is only sometimes and depends on specific tasks. This I mean that we should not blindly follow his advice.

In comments to the question right you tried to explain that the speed of the page load (getting the content browser and its rendering with the loading of external content) depends on several factors, more specifically the process consists of several stages and one of them or even several may be a delay or problem.

The time of generation of page (content) is only one of these stages. For example, you may have a delay in page load because of the large number of JS/CSS, network issues, etc. sometimes it Happens that a properly installed counters and widgets social. networks slow down other elements.

Google these tools looks at the total page load time, including the process of loading external elements in the process of page rendering in the browser.

Therefore, the local server at this stage, you do not need, and need to understand the stage or stages at which a problem occurs.
June 5th 19 at 21:21
If You still want the local server to measure the time during which the server responded to the browser request (the time from a request to start transferring the html and resources), you can use the Lighthouse extension for Chrome. Put, open the website, cause the extension, then leave included the measurement of performance "Options -> Performance". Generate the report.

Summary
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To understand the disparities, would advise to make changes in the website code to measure response time on the local (through expansion), and combat using gtmetrix.

By the way: in gtmetrix.com there is a layout for the download speed - tab "Waterfall". It can help to understand what affects the download speed.

In the screenshot below, the visible problem is with the hosting server responded to the request for 8 seconds.
Screen
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June 5th 19 at 21:23
the server response time is TTFB - time to first byte.
it can vary a little depending on the "speed" between the site server and the server carries out testing.
for Google, it is sufficient if the figure is less than or equal to 0.2 seconds.

this indicator is not main and not the most critical.
better to focus on Time to first paint
it marked a vertical line on the Performance tab
https://groups.google.com/forum/#!topic/google-chr...

if to simplify - the closer this line to the beginning, the faster according to Google will load the website.

to move it to the beginning you need to look, what to complain about Google.
usually the tips are quite sensible. most of the sites will help.

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