Thread: Regarding Explain Analyse Output.

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/9.6/static/using-explain.html
Description:

I am confused in actual time(total) output given by the the Explain Analyse
command. What I understood is that, it gives the total time required by an
operator to give the complete result.
According to this definition actual time(total) includes actual time(start
up) and some additional time to process rest of the rows. Is this true??
And I want to know how the execution time of a plan is being calculated
using these values?