[pgpool-hackers: 3863] Proposal: add connection count to pcp_proc_info and show pool_process

[Tatsuo Ishii]

While writing a blog:
https://pgsqlpgpool.blogspot.com/2020/12/timeouts-in-pgpool-ii-connections.html

I noticed that there's no metrics to know how many times connections
from client have been made to a Pgpool-II process in pcp_proc_info and
show pool_process. So I would like to propose to add that metrics to
the commands. This would be useful to know how many times clients
connect to Pgpool-II before they hit child_max_connections.

Best regards,
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese:http://www.sraoss.co.jp