I finished a TCP server by using CGO. Now I wish to do some benchmark analysis and optimization.
The connection flow across Go and C is as follows:
user <--> connFD <--> socketpair[0] <--> socketpair[1] <--> intranet server
|---------- Go domain ----------------|-------------- C domain -----------|
and the server only able to run in a docker container.
I tried using pprof to analysis a few seconds connection with real user I/O, however it gives me nothing:
(pprof) tree
Showing nodes accounting for 0, 0% of 0 total
----------------------------------------------------------+-------------
flat flat% sum% cum cum% calls calls% + context
(pprof) top
Showing nodes accounting for 0, 0% of 0 total
flat flat% sum% cum cum%
Thus I would like to know is pprof only be able to analyze pure Go program? How can I do benchmarks on such a program properly?
