> connecting
…
>   File "<string>", line 35, in store_statements
> socket.gaierror: [Errno -2] Name or service not known
> Error in Python script, line 56, file …

It seems that the attached adjusted data processing approach can produce
an usable analysis result.

elfring@Sonne:~/Projekte/Coccinelle/janitor> time /usr/bin/python3 list_duplicate_statement_pairs_from_if_branches-server4.py
statement1|statement2|"function name"|"source file"|incidence
dprintk ( "%s: readreg error (reg == 0x%02x, ret == %i)\n" , __func__ , reg , ret ) ;|return - 1 ;|stv0297_readreg|/home/elfring/Projekte/Linux/next-patched/drivers/media/dvb-frontends/stv0297.c|3
dprintk ( "%s: readreg error (reg == 0x%02x, ret == %i)\n" , __func__ , reg1 , ret ) ;|return - 1 ;|stv0297_readregs|/home/elfring/Projekte/Linux/next-patched/drivers/media/dvb-frontends/stv0297.c|3

real	0m1,044s
user	0m0,389s
sys	0m0,055s


Unfortunately, I observed during a few runs on my test system
that the displayed record sets can vary. Thus I guess that this approach
(which works together with Python multi-threading functionality) will need
further software adjustments.
Would you like to add any advices here?

Regards,
Markus