pcp_proc_info

Description

pcp_proc_info displays the information on the given Pgpool-II child process ID.

Options

If -a nor -P is not specified, process information of all connected Pgpool-II child process will be printed. In this case if there's no connected Pgpool-II child process, nothing but "No process information available" message will be printed.

Example

Here is an example output:

$ pcp_proc_info -p 11001 1406
test t-ishii 2018-07-09 16:43:53 2018-07-09 16:44:08 3 0 1 1435 1 1406 0
test t-ishii 2018-07-09 16:43:53 2018-07-09 16:44:08 3 0 1 1436 1 1406 1
    

The result is in the following order:

1. connected database name
2. connected user name
3. process start-up timestamp
4. connection created timestamp
5. protocol major version
6. protocol minor version
7. connection-reuse counter
8. PostgreSQL backend process id
9. 1 if frontend conncted 0 if not
10. pgpool child process id
11. PostgreSQL backend id 

If there is no connection to the backends, nothing will be displayed. If there are multiple connections, one connection's information will be displayed on each line multiple times.

The --verbose option can help understand the output. For example:

$ pcp_proc_info -p 11001 --verbose 1406
Database     : test
Username     : t-ishii
Start time   : 2018-07-09 16:43:53
Creation time: 2018-07-09 16:44:08
Major        : 3
Minor        : 0
Counter      : 1
Backend PID  : 1435
Connected    : 1
PID          : 1406
Backend ID   : 0
Database     : test
Username     : t-ishii
Start time   : 2018-07-09 16:43:53
Creation time: 2018-07-09 16:44:08
Major        : 3
Minor        : 0
Counter      : 1
Backend PID  : 1436
Connected    : 1
PID          : 1406
Backend ID   : 1