How is the time spent value at the end of each return message calculated in NebulaGraph Database?

Question

As title, in NebulaGraph Database, use match(v)return(v)limit 5, the time spent here has two values.

Answer 1

I think you are referring to (time spent 2687/12519 us) in any queries from GraphClient like this in NebulaGraph:

(root@nebula) [basketballplayer]> match (n) where id(n) == "player100" return n
+----------------------------------------------------+
| n                                                  |
+----------------------------------------------------+
| ("player100" :player{age: 42, name: "Tim Duncan"}) |
+----------------------------------------------------+
Got 1 rows (time spent 2687/12519 us)

I am quoting the info from the docs:

• The first number 2687 shows the time spent by the database itself, that is, the time it takes for the query engine to receive a query from the client, fetch the data from the storage server, and perform a series of calculations.
• The second number 12519 shows the time spent from the client's perspective, that is, the time it takes for the client from sending a request, receiving a response, and displaying the result on the screen.

ref: https://docs.nebula-graph.io/3.3.0/20.appendix/0.FAQ/#how_is_the_time_spent_value_at_the_end_of_each_return_message_calculated